Prof. Gert D. Billing Summer SchoolSymposium
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List of publications 1969-2003

Gert Due Billing
Department of Chemistry, H. C. Ø rsted Institute
2100 Copenhagen Ø, Denmark

 

References

  1. G. D. Billing, "The rate constant for dissociation of diatomic molecules (in Danish). (M. Sc. report 1969)"
  2. G. D. Billing and K. Andersen, "Numerical solution of chemical kinetic differential equations (in Danish). Report no.5, Chemistry Laboratory III, University of Copenhagen, 1971"
  3. G. D. Billing, "The importance of multiple quantum transitions on the dissociation constant of hydrogen in an inert gas", Chem. Phys. Lett. 14(1972)274-278.
  4. G. D. Billing, "Semiclassical three-dimensional model for vibrational relaxation", J. Chem. Phys. 57(1972)5341-5350.
  5. G. D. Billing, "The semiclassical method in inelastic scattering theory (in Danish). (Ph. D. report 1972)".
  6. G. D. Billing, "The SSH theory for molecular relaxation (in Danish) 1973".
  7. P. E. Poulev, J. F. Pedersen, J. F. Nielsen, A. Northeved and G. D. Billing, "Myocardial contraction velocity and acceleration in man measured by ultrasound echocardiography differentiation", Cardiovascular Research 7(1973)266-276.
  8. G. D. Billing, "WKB approximations in inelastic scattering theory". J. Chem. Phys. 59(1973)6147-6152.
  9. G. D. Billing, "Semiclassical three-dimensional inelastic scattering theory", J. Chem. Phys. 61(1974)3340-3343.
  10. G. D. Billing, "Semiclassical three-dimensional model for vibrational enregy transfer in diatomic molecules", Chem. Phys. 5(1974)244-254.
  11. G. D. Billing, "Semiclassical three-dimensional model for vibrational relaxation II", J. Chem. Phys. 62(1975)1480-1487.
  12. G. D. Billing, Ön the applicability of the classical trajectory equations in inelastic scattering theory", Chem. Phys. Lett. 30(1975)391-393.
  13. A. Hunding and G. D. Billing, "Nonlinear constrained optimization" RECKU publication, University of Copenhagen 1975.
  14. G. D. Billing, "Semiclassical calculations of vibrational/rotational transitions in the He-H2 system", Chem. Phys. 9(1975)359-369.
  15. G. D. Billing, Ön the best average trajectory in the vincinity of energetic threshold", J. Chem. Phys. 64(1976)908-909.
  16. G. D. Billing and E. R. Fisher, "VV and VT rate coefficients in H2 by a quantum-classical model", Chem. Phys. 18(1976)225-232.
  17. C. Nyeland and G. D. Billing, "Rotational relaxation of polar molecules", Chem. Phys. 13(1976)417-424.
  18. G. D. Billing, "Semiclassical calculation of vibrational/rotational transitions in Li+ + H2", Chem. Phys. 14(1976)267-273.
  19. H. Essen, G. D. Billing and M. Baer, "Comparison of quantum mechanical and classical mechanical calculation of collinear reaction rate constants for H + Cl2 and D + Cl2 systems", Chem. Phys. 17(1976)443-449.
  20. G. D. Billing, "The semiclassical coupled states method", J. Chem. Phys. 17(1976)443-449.
  21. G. D. Billing, "Semiclassical collision theory", CECAM report of workshop on collisions 1975 pp 193-207.
  22. G. D. Billing and A. Hunding, Ön the fitting of analytical potential energy surfaces by constrained optimization", Chem. Phys. Lett. 44(1976)30-35.
  23. G. D. Billing, "Rotational and vibrational relaxation of hydrogen and deuterium", Chem. Phys. 20(1977)35-42.
  24. C. Nyeland. and G. D. Billing, "Thermal conductivities of ortho and para hydrogen", Chem. Phys. 22(1977)89-93.
  25. G. D. Billing and M. Baer, Ä Propagator method for integration of classical trajectory equations", Chem. Phys. Lett. 48(1977)342-346.
  26. G. D. Billing, "Comparison of quantum mechanical and semiclassical cross sections for rotational excitation of hydrogen", Chem. Phys. Lett. 50(1977)320-323.
  27. L. L. Poulsen, G. D. Billing and J. I. Steinfeld, "Temperature dependence of HF vibrational relaxation", J. Chem. Phys. 68(1978)5121-5127.
  28. G. D. Billing, B. C. Eu and C. Nyeland, Ä stochastic theory of collision phenomena: One dimensional atom-diatom collision model", Chem. Phys. 29(1978)427-443.
  29. G. D. Billing, "Cross sections and rate constants for rotational and vibrational excitation of H2 and D2 colliding with 4He", Chem. Phys. 30(1978)387-400.
  30. G. D. Billing and L. L. Poulsen, "Theory of V-V and V-T/R energy transfer for HF(n=1 to 7) + HF(0)", J. Chem. Phys. 68(1978)5128-5138.
  31. C. Nyeland and G. D. Billing, "Rotational relaxation of homonuclear diatomic molecules", Chem. Phys. 30(1978)401-406.
  32. G. D. Billing, Ön a semi-classical approach to energy transfer in polyatomic molecules", Chem. Phys. 33(1978)227-247.
  33. G. D. Billing and A. Hunding, "Bifurcation analysis of nonlinear reaction-diffusion systems", J. Chem. Phys. 69(1978)3603-3610.
  34. G. D. Billing, Ïntroduction to the theory of inelastic collisions in chemical kinetics", Doctoreal Thesis, University of Copenhagen 1978.
  35. L. L. Poulsen and G. D. Billing, "Calculation of vibrational deactivation of HF(1 £ n £ 7) by DF(0) and of DF(1 £ n £ 7) by HF(0)", Chem. Phys. 36(1979)271-281.
  36. G. D. Billing, "Semiclassical calculation of rotational transitions in Li+ + N2", Chem. Phys. 36(1979)127-134.
  37. C. Nyeland and G. D. Billing, Äpproximative treatments of rotational relaxation", Chem. Phys. 40(1979)103-110.
  38. G. D. Billing, "Semiclassical calculation of energy transfer in polyatomic molecules, I: The N2 + CO2 system", Chem. Phys. 41(1979)11-20.
  39. G. D. Billing and L. L. Poulsen, Ön the use of perturbation theory in the asymptotic region of classical trajectories", Chem. Phys. Lett. 66(1979)177-182.
  40. G. D. Billing and E. R. Fisher, "VV and VT rate coefficients in N2 by a quantum-classical model", Chem. Phys. 45(1980)359-369.
  41. A. Hunding and G. D. Billing, "Secondary bifurcations in spherical reaction-diffusion systems", Chem. Phys. 45(1980)359-369.
  42. G. D. Billing, "Semiclassical calculation of energy transfer in polyatomic molecules. II: The effect of anharmonic coupling terms", Chem. Phys. 46(1980)123-131.
  43. L. L. Poulsen and G. D. Billing, "Vibrational deactivation of DF", Chem. Phys. 45(1980)287-296.
  44. G. D. Billing, B. C. Eu, N. Garisto-Zaritsky and C. Nyeland, Ä Stochastic-Collision Complex Model Theory of Chemical Reactions", J. Chem. Phys. 73(1980)1627-1636.
  45. G. D. Billing, "Semiclassical calculation of energy transfer in polyatomic molecules. III: Rate constants for energy transfer in Ne + CO2", Chem. Phys. 49(1980)255-265.
  46. L. L. Poulsen and G. D. Billing, Ä classical trajectory study of the fath of vibrational energy released in HF", Chem. Phys. 53(1980)389-401.
  47. G. D. Billing, "Semiclassical calculation of energy transfer in polyatomic molecules. IV: A graphic method for solution of the M-quantum case", Chem. Phys. 51(1980)417-426.
  48. G. D. Billing, "Vibration/vibration energy transfer in CO colliding with 14N2, 14N15N and 15N2", Chem. Phys. 50(1980)165-173.
  49. M. Capitelli, C. Gorse and G. D. Billing, "V-V pumping up in non-equilibrium nitrogen: Effects on the dissociation rate", Chem. Phys. 52(1980)299-304.
  50. G. D. Billing, "Semiclassical calculation of cross sections and rate constants for vibrational deactivation of HD(v=1) colliding with 4He", Chem. Phys. Lett. 75(1980)254-259.
  51. A. Hunding and G. D. Billing, "Bipolar dissipative structure emerging directly in a spherical nonlinear reaction-diffusion system", J. Chem. Phys. 75(1981)486-488.
  52. G. D.Billing, "Semiclassical calculation of the rate constant for the process N2(v=1) + N2(v=0) ® 2 N2(v=0) + 2330.7 cm-1 at low temperatures", Chem. Phys. Lett. 76(1980)178-182.
  53. M. Cacciatore and G. D. Billing, "Semiclassical calculation of VV and VT reate coefficients in CO", Chem. Phys. 58(1981)395-407.
  54. C. Nyeland and G. D. Billing, "Classical path sudden approximation: Calculation of rotational relaxation", Chem. Phys. 60(1981)359-367.
  55. G. D. Billing, "Semiclassical calculations of energy transfer in polyatomic molecules. V. Differential cross sections for excitation of CO2 and N2O colliding with Li+ at E = 4.72 eV", Chem. Phys. 60(1981)199-213.
  56. G. D. Billing, "Semiclassical calculation of enrgy transfer in polyatomic molecules. VI. On the theory for linear triatomic molecules", Chem. Phys. 61(1981)415-430.
  57. G. Jolicard and G. D. Billing, "Stochastic theory for molecular collisions in the perturbed stationary state formulation", Chem. Phys. 64(1982)123-138.
  58. G. D. Billing, "Semiclassical calculation of energy transfer in polyatomic molecules. VII. Inter and intramolecular energy transfer in N2 + CO2", Chem. Phys. 64(1982)35-47.
  59. G. D. Billing and G. Jolicard, "Comparison of quantum mechanical and semiclassical (classical path) probabilities for vibrational transitions in diatom-diatom collisions", Chem. Phys. 65(1982)323-333.
  60. G. D. Billing and M. Cacciatore, "Semiclassical calculation of vibrational relaxation of CO colliding with 4He and 3He", Chem. Phys. Lett. 86(1982)20-25.
  61. G. D. Billing and L. L. Poulsen, "Classical path calculation of differential cross sections for rotational excitation of CO colliding with D2 at 87.2 meV", Chem. Phys. 70(1982)119-126.
  62. G. D. Billing, Ön a semiclassical approach to energy transfer by atom/molecule surface collisions", Chem. Phys. 70(1982)223-239.
  63. G. D. Billing, "Semiclassical calculation of rate constants for energy transfer between the asymmetric stretch mode of CO2 and N2", Chem. Phys. Lett. 89(1982)337-340.
  64. G. D. Billing and D. C. Clary, "Comparison of semiclassical and quantum mechanical cross sections and rate constants for CO2(0110) + M ® CO2(0000) + M (M=He,Ne)", Chem. Phys. Lett. 90(1982)27-30.
  65. L. L. Poulsen and G. D. Billing, "Vibrational deactivation of CO(v=1) by p-H2 and o-H2", Chem. Phys. 73(1982)313-322.
  66. C. Nyeland, B. C. Eu and G. D. Billing, "Mixed stochastic-collision complex/Franck-Condon model: Vibrational distributions for simple chemical reactions", J. Phys. Chem. 87(1983)488-493.
  67. G. D. Billing and M. Cacciatore, Ön the importance of multiquantum VV transitions in CO", Chem. Phys. Lett. 94(1983)218-221.
  68. G. D. Billing, "Semiclassical theory for atom-surface scattering: Calculations on Ar + W(110)", Chem. Phys. 74(1983)143-152.
  69. G. D. Billing, "Semiclassical calculations of energy transfer in polyatomic molecules. VIII. Theory for atom + nonlinear triatom", Chem. Phys. 76(1983)315-329.
  70. G. D. Billing and D. C. Clary, "Semiclassical calculations of energy transfer in polyatomic molecules. IX. Cross sections for M + CO2(000) ® M + CO2(nm1) (M=He and Ar)", Chem. Phys. 80(1983)213-219.
  71. G. D. Billing, "Semiclassical theory for diatom-diatom collisions", Chem. Phys. Lett. 97(1983)188-192.
  72. G. D. Billing, "Semiclassical calculation of energy transfer in polyatomic molecules. X. Energy transfer in Ar + SF6 collisions at 1 eV", Chem. Phys. 79(1983)179-188.
  73. G. D. Billing, "Rateconstants and cross sections for vibrational transitions in atom- diatom and diatom-diatom collisions", Comp. Phys. Comm. 32(1984)45-62.
  74. G. D. Billing and L. L. Poulsen, "Differential cross sections for rotational excitation in CO + D2 collisions at 87.2 meV", Chem. Phys. Lett. 99(1983)368-371.
  75. M. Cacciatore, M. Capitelli and G. D. Billing, "Vibrational energy relaxation in excited CO molecules in 4He - CO collisions: A semiclassical study", Chem. Phys. 82(1983)1-10.
  76. R. J. Price, D. C. Clary and G. D. Billing, "Validity of the rotational sudden approximation for vibrational relaxation in He + CO", Chem. Phys. Lett. 101(1983)269-273.
  77. C. Nyeland, L. L. Poulsen and G. D. Billing, "Rotational Relaxation and Transport Coefficients for Diatomic Gases: Computations on Nitrogen", J. Phys. Chem. 88(1984)1216-1221.
  78. G. D. Billing, Ön the use of Ehrenfest's theorem in molecular scattering", Chem. Phys. Lett. 100(1983)535-539.
  79. G. D. Billing and G. Jolicard, "The linearly forced Morse oscillator", Chem. Phys. Lett. 102(1983) 491-500.
  80. G. Jolicard and G. D. Billing, "Semiclassical treatment of ro-vibrational relaxation in the large j-limit: Application to 4He + CO collisions", Chem. Phys. 85(1984)253-266.
  81. G. D. Billing, "The semiclassical treatment of molecular ro/vibrational energy transfers", Comp. Phys. Rep. 1(1984)237-296.
  82. G. D. Billing and G. Jolicard, "Quantum-classical model for photo dissociation", J. Phys. Chem. 88(1984)1820-1825.
  83. G. D. Billing, Ïnelastic scattering and chemisorption of CO on a Pt(111) surface", Chem. Phys. 86(1984)349-359.
  84. L. L. Poulsen and G. D. Billing, "Vibrational deactivation of CO(v=1) by H2. The importance of higher order multipole moments", Chem. Phys. 89(1984)219-222.
  85. G. D. Billing, "Quantum classical reaction path model for chemical reactions. I. Theory and collinear atom-diatom case", Chem. Phys. 89(1984)199-218.
  86. G. D. Billing and L. L. Poulsen, "Semiclassical treatment of rotational excitation of NH3 colliding with 4He", J. Chem. Phys. 81(1984)3866-3873.
  87. M. Cacciatore, M. Capitelli and G. D. Billing, "Theoretical Semiclassical Investigation of the Vibrational Relaxation of CO colliding with 14N2", Chem. Phys. 89(1984)17-31.
  88. C. Nyeland, L. L. Poulsen and G. D. Billing, "Bimolecular Rate, Rotational Relaxation and Transport coefficients for gaseous Hydrogen Fluoride", J. Phys. Chem. 88(1984)5858-5863.
  89. G. D. Billing, "Rotational and Vibrational Energy Transfer in Diatomic and Polyatomic Molecules", in Molecular Astrophysics ed. by G. H. F. Diercksen, W. F. Huebner and P. W. Langhoff, D. Reidel Publ. Co., Dordrecht 1985, pp 517-532.
  90. G. D. Billing, "Semiclassical calculation of energy transfer in polyatomic molecules. XI. Cross sections and rateconstants for Ar + CO2", Chem. Phys. 91(1984)327-339.
  91. G. D. Billing and M. Cacciatore, "Semiclassical calculations of the reaction probability for the process C + O ® CO on a Pt(111) surface", Chem. Phys. Lett. 113(1985)23-38.
  92. G. D. Billing, "V-V(vibration-vibration) and V-T(vibration-translation) energy transfer including multiquatnum transitions", in Vibrational excitation, dissociation and ionization of diatomic molecules under non-equilibrium conditions ed. by M. Capitelli, Springer-Verlag 1986, pp 85-112.
  93. G. D. Billing, L. L. Poulsen and G. H. F. Diercksen, "Rate constants for rotational excitation of ortho and para NH3 colliding with 4He on an ab initio potential energy surface", Chem. Phys. 98(1985)397-408.
  94. G. D. Billing, Ënergy transfer in Ne and Xe-CO2 collisions at 1 eV", Chem. Phys. Lett. 117(1985)145-150.
  95. G. Jolicard and G. D. Billing, Ïnfrared multiphoton dissociation of a Morse oscillator. A new representation of the continuum", Chem. Phys. Lett. 119(1985)162-168.
  96. G. D. Billing, "Semiclassical calculation of cross sections for vibration-rotation energy transfer in HF-HF collisions", J. Chem. Phys. 84(1986)2593-2603.
  97. G. D. Billing, Ä semiclassical approach to molecular energy transfer", in Proceedings of Niels Bohr Centennial Conference on 'Semiclassical Discription of Atomic and Nuclear Collisions', ed. by J. de Boer and J. Bang, D. Reidel Publ. Co., Copenhagen 1985, pp 339-345.
  98. M. Cacciatore and G. D. Billing, Ïsotope separation by VV pumping in CO", Chem. Phys. Lett. 121(1985) 94-98.
  99. G. D. Billing and G. H. F. Diercksen, "Cross sections for rotational excitation of ammonia colliding with helium and hydrogen", Chem. Phys. Lett. 121(1985)99-105.
  100. G. D. Billing and M. Cacciatore, "Semiclassical calculation of the probability for formation of CO2 on a Pt(111) surface", Chem. Phys. 103(1986)137-150.
  101. G. Jolicard and G. D. Billing, "Time dependent perturbation theory: A recursive generation of the transition amplitudes between bound states", Chem. Phys. 104(1986)357-370.
  102. G. D. Billing, "Semiclassical calculation of energy transfer in polyatomic molecules. XII. Organic molecules", Chem. Phys. 104(1986)19-81.
  103. G. D. Billing and G. H. F. Diercksen, "Rate Constants for Rotational Excitation of Ammonia colliding with Hydrogen", Chem. Phys. 105(1986)145-158.
  104. G. D. Billing, "Comparison of Quantum Mechanical and Semiclassical Cross sections and Rate-constants for Vibrational Relaxation of N2 and CO colliding with 4He", Chem. Phys. 107(1986)39-46.
  105. G. D. Billing, "Laser absorption spectra: Influence of Collisions", Chem. Phys. Lett. 127(1986)269-277.
  106. G. D. Billing, Ä Theoretical Approach to Chemical Reactions at Solid Surfaces", in Understanding Molecular Properties, eds. Aa. E. Hansen, J. Avery and J. P. Dahl, D. Reidel Publ. Co. Amsterdam 1986, pp 237-249.
  107. G. D. Billing, "Cross sections for rotational/vibrational transitions in HF-HF collisions: Effect of initial state", Chem. Phys. 112(1987)95-104.
  108. G. D. Billing, "Semiclassical collision theory: Selfconsistent classical path method", J. Chem. Phys. 86(1987)2617-2625.
  109. C. Gorse, G. D. Billing, M. Cacciatore, M. Capitelli and S. DeBenedictis, "Non Equilibrium Vibrational Kinetics of CO pumped by Vibrationally Excited Nitrogen Molecules: General Theoretical Considerations", Chem. Phys. 111(1987)351-360.
  110. G. D. Billing, "Rate-constants for vibrational transitions in diatom-diatom collisions", Comp. Phys. Comm. 44(1987)121-136.
  111. M. Broquier, A: Picard-Bersellini, H. Aroui, J. Hall and G. D. Billing, "Rotational excitation of NH3 colliding with He: Experiments and Theoretical Calculations": Proceedings of the 15th International Symposium on Rarefied Gas Dynamics 1986, pp 353-366.
  112. B. C. Eu, R. Khayat, G. D. Billing and C. Nyeland, "Nonlinear Transport Coefficients and Plane Couette Flow of a Viscous, Heat-conducting Gas between two Plates at different Temperatures", Can. J. Phys. 65(1987)1090-1103.
  113. G. D. Billing, "Laser fragmentation of solids", Chem. Phys. 115(1987)229-238.
  114. G. D. Billing, "Nobelprisen i kemi 1986", Dansk Kemi 12(1986)372-375.
  115. G. D. Billing, Ëlectron-hole pair versus phonon excitation in molecule-surface collisions", Chem. Phys. 116(1987)269-282.
  116. C. Nyeland and G. D. Billing, "Transport Coefficients of Diatomic Gases: Internal State Analyses for Rotational and Vibrational Degrees of Freedom", J. Phys. Chem. 92(1988)1752-1755.
  117. J. T. Muckerman, R. D. Gilbert and G. D. Billing, Ä Classical Path Approach to Reactive Scattering: I. Use of Hyperspherical Coordinates", J. Chem. Phys. 88(1988)4779-4787.
  118. G. D. Billing, "Laser assisted molecule surface collisions", Surf. Sci. 195(1988)187-194.
  119. M. Broquier, A. Picard-Bersellini, H. Aroui and G. D. Billing, "Pressure broadening and Cross relaxation of ammonia perturbed by hydrogen and helium: Implications on intermolecular potentials and discussion of rotational effects", J. Chem. Phys. 88(1988)1551-1556.
  120. G. D. Billing and G. H. F. Diercksen, "Cross sections and Rate constants for Rotational Excitation of NH3 colliding with H2(j=0) and H2(j=1)", Chem. Phys. 118(1987)161-166.
  121. G. D. Billing and N. E. Henriksen, "Semiclassical model for laser fragmentation of polyatomic molecules", Chem. Phys. 119(1988)205-219.
  122. G. D. Billing and G. H. F. Diercksen, "Rateconstants for rotational excitation of ammonia colliding with rotationally excited hydrogen", Chem. Phys. 148(1988)77-80.
  123. G. D. Billing, Ïnfluence of phonon inelasticity upon atom-solid scattering intensities", Surf. Sci. 203(1988)257-275.
  124. H. Aroui, A. Picard-Bersellini, M. Broquier, S. Blanchard and G. D. Billing, "Fourier Transform Linewidths Measurements in NH3 in the ground state", J. Chem. Phys. 89(1988)5373-5376.
  125. N. E. Henriksen, G. D. Billing and F. Y. Hansen, "Phase Space Representation of Quantum Mechanics: Approximate Dynamics of the Morse Oscillator", Chem. Phys. Lett. 119(1988)397-403.
  126. G. D. Billing, "Semiclassical model for energy transfer in polyatomic molecules. XIII. Biomolecules", Chem. Phys. 127(1988)107-120.
  127. G. Jolicard and G. D. Billing, Ïntermediate representation formulation: An exact treatment for multiphoton absorption and dissociation in multi laser fields.", J. Chem. Phys. 90(1989)346-353.
  128. G. D. Billing, "Classical Path Approach to Inelastic and Reactive Scattering", in: Supercomputer Algorithms for Reactivity, Dynamics and Kinetics of small Molecules, Editor A. Lagana, Reidel Publ. Co. North-Holland 1989.
  129. G. D. Billing and J. T. Muckerman Ä Classical Path Approach to Reactive Scattering:
    II. Apparatus for 3D Applications" J. Chem. Phys. 91(1989)6830-6838.
  130. M. Cacciatore, M. Capitelli and G. D. Billing "Relaxation dynamics of Vibrationally highly excited H2 molecules on a Cu-surface", Surf. Sci. 217(1989)L391-L396.
  131. F. Y. Hansen, N. E. Henriksen and G. D. Billing, "The time propagation of the stationary states of a Morse Oscillator by the Gaussian wave packet method", J. Chem. Phys. 90(1989)3060-3070.
  132. J. T. Muckerman, S. Kanfer, R. D. Gilbert and G. D. Billing, "Classical Path and Quantum Trajectory Approach to Inelastic Scattering", (unpublished results).
  133. G. D. Billing and G. Jolicard, Ön the application of the adiabatic invariance method for the identification of 'quantum chaos'", Chem. Phys. Lett. 155(1989)521-526.
  134. M. Cacciatore, M. Capitelli and G. D. Billing, "Vibration to Translation energy exchange in H2 colliding with highly vibrationally excited H2 molecules", Chem. Phys. Lett. 157(1989)305-308.
  135. G. D. Billing and D. C. Clary, Ön the influence of collisions on laser excitation of SF6", Chem. Phys. 135(1989)91-97.
  136. G. D. Billing and J. T. Muckerman, Ä Classical Path Approach to Reactive Scattering", Int. J. Quant. Chem. 36(1989)179-186.
  137. G. D. Billing and M. Cacciatore Ön the dynamical interaction of H2(vj) with Cu(111): The role of phonon and electron-hole pair excitation mechanisms", Proceedings of the XII Int. Symp. on Molecular Beams, Ed. V. Aquilanti, Perugia 1989, p. 248-250.
  138. C. Nyeland and G. D. Billing, "Semiclassical coupled states sudden approximation for multipole cross sections in atom-diatom systems", Chem. Phys. 138(1989)245-253.
  139. G. D. Billing, "Quantum-Classical Reaction Path Model for Chemical Reactions. II. 3 D-applications", Chem. Phys. 135(1989)423-436.
  140. G. D. Billing, "The Dynamics of Molecule-Surface Interaction", Comp. Phys. Rep. 12(1990)383-451.
  141. M. Cacciatore and G. D. Billing, "Dynamical Relaxation of H2(vj) on a Copper Surface" Surf. Sci. 232(1990)35-50.
  142. G. D. Billing, Ënergy transfer in atom/molecule collisions with molecules and surfaces", in Non-Equilibrium Processes in Partially Ionized Gases, Eds. M. Capitelli and J. M. Bardsley, Plenum Publ. Corp., New York 1990.
  143. G. Jolicard and G. D. Billing, Ä new partitioning technique for the calculation of Bloch's wave operators", J. Phys. B. 23(1990)3457-3468.
  144. G. D. Billing, Ënergy Transfer in Polyatomic Molecules: Anharmonic Couplings in H+-CF4 Collisions", J. Chem. Soc. Faraday Trans. 86(1990)1663-1668.
  145. N. E. Henriksen, G. D. Billing and F. Y. Hansen, "Dissociative chemisorption of N2 on Rhenium: Dynamics at high impact energies", Surf. Sci. 227(1990)224-236.
  146. G. D. Billing, "Basis set independent methods in timedependent dynamics", Comp. Phys. Comm. 63(1991)38-50.
  147. G. D. Billing, "Quantum-classical Reaction Path/Surface Model for Chemical Reactions: III. The reaction H2+OH® H2O+H", Chem. Phys. 146(1990)63-77.
  148. G. D. Billing, A. Guldberg, N. E. Henriksen and F. Y. Hansen: "Dissociative chemisorption of N2 on Rhenium: A semi-classical dynamical treatment", Chem. Phys. 147(1990)1-11.
  149. M. Cacciatore, M. Capitelli and G. D. Billing, "Vibrational relaxation of highly excited H2 molecules in gas-phase and gas-surface interactions", Proceedings of the V'th Int. Symp. on the Production and Neutralization of Negative Ions and Beams, Ed. A. Hershcovitz, AIP Conference Proc. 1990.
  150. F. Y. Hansen, N. E. Henriksen, G. D. Billing and A. Guldberg, "Catalytic synthesis of ammonia using vibrationally excited nitrogen molecules: Theoretical calculation of equlibrium and rate constants", Surf. Sci. 264(1992)225-234.
  151. G. Jolicard and G. D. Billing, Ënergy dependence study of vibrational inelastic collisions using the wave operator theory and an analyses of quantum flows in momentum space", Chem. Phys. 149(1991)261-273.
  152. N. Markovic, G. D. Billing and J. T. Muckerman, Ön the use of grid methods for the solution of reactive scattering problems in hyperspherical coordinates", Chem. Phys. Lett. 172(1990)509-514.
  153. M. Cacciatore and G. D. Billing, "State to state vibration-translation and vibration-vibration rate constants in H2-H2 and HD-HD collisions", J. Phys. Chem. 96(1992)217-223.
  154. G. D. Billing, "Semiclassical treatment of reactive scattering processes", Trends in Chemical Physics, 1(1991)133-141.
  155. G. D. Billing, "Quantum-classical reaction path model for chemical reactions, IV. The reaction Cl-+CH3® ClCH3+Cl-", Chem. Phys. 159(1992)109-126.
  156. H. Aroui, M. Broquier, M. Chevalier, A. Picard and G. D. Billing, "Temperature effects on collision cross sections between some rovibrational states of ammonia gas perturbed by hydrogen and helium", Mol. Phys. 74(1991)897-904.
  157. G. D. Billing, "Classical and Semi-classical Treatment of Energy Transfer in Small Molecules", Status and Future Developments in the Study of Transport Properties, ed. W. A. Wakeham, Kluwer Academic Publishers, p.205-216.
  158. N. Markovic and G. D. Billing, "The semiclassical solution of reactive scattering problems by wave packet propagation in hyperspherical coordinates", Chem. Phys. Lett. 195(1992)53-61.
  159. N. E. Henriksen, G. D. Billing and F. Y. Hansen, "Catalytic Synthesis of Ammonia Using Vibrationally Excited Nitrogen: Effect of vibrational relaxation", J. Phys. Chem. 96(1992)223-226.
  160. M. Rakovshik and G. D. Billing Ön the coupling of phonon and electron-hole pair excitation in molecule surface scattering", Chem. Phys. Lett. 185(1991)1-6.
  161. Annette Guldberg and G. D. Billing, "Laser Induced Dissociation of Hydrogen Fluoride", Chem. Phys. Lett. 186(1991)229-237.
  162. G. D. Billing, N. E. Henriksen and C. Leforestier, "Semiclassical treatment of laser excitation of the hydrogen atom.
    Phys. Rev. A. 45(1992)R4229-R4232.
  163. Lichang Wang and G. D. Billing, "Rotational relaxation and transport coefficients for gaseous hydrogen chloride", J. Chem. Soc. Faraday Trans., 88(1992)163-166.
  164. G. D. Billing and Lichang Wang, "Transport coefficients and rotational relaxation of nitrogen at high temperatures", J. Phys. Chem. 96(1992)2572-2575.
  165. G. D. Billing, "Quantum-classical reaction path model for chemical reactions.
    V. Relation to transition state theory", Chem. Phys. 161(1992)245-255.
  166. G. D. Billing and Lichang Wang, Ön the use of stratified importance sampling for calculating transport properties", Chem. Phys. Lett. 168(1992)315-319.
  167. Annette Guldberg and G. D. Billing, "Laser Induced Dissociation of an Anharmonic Oscillator Coupled to a Set of Harmonic Oscillators", Chem. Phys. Lett. 191(1992)455-462.
  168. N. E. Henriksen, F. Yssing Hansen and G. D. Billing, "The accuracy of the time-dependent self-consistent field approximation for inelastic collisions", Chem. Phys. Lett. 199(1992) 176-186.
  169. G. D. Billing, V. Zenevich and W. Lindinger, "Semiclassical analysis of vibrational energy transfer in HF-HF and isotopic systems. I. V-R/T and V-V processes for the lowest transitions in HF-HF", J. Chem. Phys. 97(1992)3274-3281.
  170. G. Jolicard and G. D. Billing, "Partial widths and time-dependent dissociation dynamics by the optical potential method", J. Chem. Phys. 97(1992)997-1003.
  171. N. Markovic and G. D. Billing, "Semiclassical wavepacket approach to reactive scattering in hyperspherical coordinates", J. Chem. Phys. 97(1992)8201-8209.
  172. M. Cacciatore, P. De Felice, A. Raino and G. D. Billing, Ä 3D Semiclassical approach to the Dynamcis of State-selected D2(v,j) colliding with non-rigid Cu Surface", Proceedings of the Symposium on Atomic and Surface Physics. Eds. D. Bassi, M. Scotoni and P. Tosi, Trento Italy 1992, p.3.124- 3.126.
  173. M. Cacciatore, R. Capurosso and G. D. Billing, Ïsotope and Centrifugal coupling effects on VV and VT rate constants for energy transfer in hydrogen", Chem. Phys. Lett. 197(1992)92-98.
  174. V. Zenevich, W. Lindinger and G. D. Billing, "Vibrational relaxation of N2+(X2Sg+,v=1) in collisions with 4He. II. Classical Path Calculations", J. Chem. Phys. 97(1992)7257-7262.
  175. Ge Qingfeng, Wang Lichang and G. D. Billing, Ïnelastic Scattering and chemisorption of CO on a Cu(111) surface", Surf. Sci. 277(1992)237-245.
  176. V. Zenevich, W. Lindinger and G. D. Billing, "Semi-classical and classical mechanical calculations for vibrational relaxation of O2+ colliding with Kr", Chem. Phys. Lett. 197(1992)99-104.
  177. G. D. Billing and R. E. Kolesnick, "Vibrational relaxation of oxygen: State to state rate constants", Chem. Phys. Lett. 200(1992)382-386.
  178. Lichang Wang and G. D. Billing, "Rotational Relaxation and Transport Properties of Oxygen by using Importance Sampling Method", J. Phys. Chem. 97(1993)2523-2526.
  179. R. E. Kolesnick and G. D. Billing, "Rate Constants for Vibrational Transitions in Hydrogen and Isotopes", Chem. Phys. 170(1993)201-207.
  180. F. A. Gianturco, S. Serna, A. Palma, G. D. Billing and V. Zenevich, Ëffect of Rotovibrational Coupling on the dynamics of ionic systems: The Kr-O2+ case", J. Phys. B. 26(1993)1839-1849.
  181. G. D. Billing, "Quantum Corrections to the Classical Path Theory", J. Chem. Phys. 99(1993)5849-5857.
  182. G. D. Billing and N. Markovi\'c, Äpparatus for coupled 3D wavepacket solution of reactive scattering problems in hyperspherical coordinates", J. Chem. Phys. 99(1993)2674-2681.
  183. G. D. Billing, "Quantum-classical Methods" in "Grid Methods in Atomic and Molecular Quantum Calculations", ed. C. Cerjan, Kluwer Academic Publishers 1993, p. 121-139.
  184. G. D. Billing, "Quantum mechanical reactive scattering: A challenge to modern computing" in UNI-C Supercomputing Annual Report, 1992, p. 59-62.
  185. N. Markovi\'c and G. D. Billing, "Reactive scattering by wave packet propagation-A semiclassical calculation of cross sections", Chem. Phys. 173(1993)385-392.
  186. A. Gross and G. D. Billing, "Rate constants for ozon formation and for isotopic exchange reactions", Chem. Phys. 173(1993)393-406.
  187. M. Broquier, G. Lefevre, M. Pittman, A. Picard-Bersellini, M. Chevalier and G. D. Billing, "Transfer of rotational population in NH3 by infrared-infrared double resonance", Mol. Phys. 79(1993)1103-1112.
  188. G. D. Billing and M. Cacciatore, Ä Semiclassical Multi-Dimensional Study on the Inelastic and Reactive Interaction of D2(v,j) with a non-rigid Cu(111) surface", Faraday Disc. 96(1993).
  189. G. D. Billing, "Semiclassical model for energy transfer in polyatomic molecules. XIV. He- and Ar-glyoxal collisions", Chem. Phys. 173(1993)167-175.
  190. G. D. Billing and R. E. Kolesnick , "Semi-classical calculations of rate constants for vibrational transitions in hydrogen", Chem. Phys. Lett. 215(1993)571-575.
  191. A. Gross and G. D. Billing, "Computer Simulation of Ozone Formation", in Supercomputing Annual Report 1993, p. 36-37.
  192. G. D. Billing, "VV and VT rates in N2-O2 collisions", Chem. Phys. 179(1994)463-467.
  193. Lichang Wang, Qingfeng Ge and Gert D. Billing, "Molecular dynamics study of H2 diffusion on a Cu(111) surface", Surf. Sci. 301(1994)353-363.
  194. M. Capitelli, M. Cacciatore, R. Celiberto, C. Gorse, G. D. Billing and A. Lagana, "Dynamics of elementary processes and modeling of negative D- sources", in "Production and Neutralization of Negative Ions and Beams", AIP Conference Proceedings no. 287, AIP Press 1994, p. 130-140.
  195. L. Goubert, G. D. Billing, E. Desoppere and W. Wieme, "Semiclassical calculation of the probabilities for collision induced vibrational transitions in Ar2*", Chem. Phys. Lett. 219(1994) 360-365.
  196. K. Museth, G. D. Billing and J. Linderberg, "The full Quantum Mechanical Three Body Problem of H2+", UNI-C, Supercomputing Report 1993, p. 38-41.
  197. G. D. Billing and K. V. Mikkelsen, "Dynamical model for SN2 reactions in solution: The Cl-+CH3Cl ® CH3Cl+Cl- reaction", Chem. Phys. 182(1994)249-262.
  198. N. Markovic and G. D. Billing, "The coupled three-dimensional wave packet approach to reactive scattering", J. Chem. Phys. 100(1994)1085-1093.
  199. Lichang Wang, Qingfeng Ge and G. D. Billing, "Study of the surface diffusion of CO on Pt(111) by MD simulation", Surf. Sci. 304(1994)L413-L419.
  200. G. D. Billing, "The Classical Path Method in Inelastic and Reactive Scattering", Int. Reviews in Physical Chemistry 13(1994)309-335.
  201. N. Balakrishnan and G. D. Billing, "Three-dimensional wavepacket studies of ozone photodissociation in the Hartley band: Converged autocorrelation functions and absorption spectra", J. Chem. Phys. 101(1994)2968-2977.
  202. G. Jolicard and G. D. Billing, "The extension of Wave Operator-Floquet formalism to molecular photodissociation processes with short laser pulses", J. Chem. Phys. 101(1994)9429-9435.
  203. N. Balakrishnan and G. D. Billing, Ïntegral cross sections and rate constants for the reaction OH+H2® H2O+H: A semiclassical wavepacket approach", J. Chem. Phys. 101(1994)2785-2792.
  204. G. D. Billing and G. Jolicard, "The improvement of the TDSCF method for a reaction coordinate coupled to a heat bath", Chem. Phys. Lett. 221(1994)75-80.
  205. M. B. Sevryuk and G. D. Billing, "Vibrational transition probabilities for the CO molecule trapped in an argon cluster-a semiclassical simulation", Chem. Phys. 185(1994)199-210.
  206. G. D. Billing, "Quantum Mechanical Treatment of Reactive Scattering Problems", in "Parallel Scientific Computing", Workshop on Parallel Scientific Computing at UNI*C, PARA94, Springer-Verlag, Berlin 1994, p. 80-88.
  207. A. Gross and G. D. Billing, "Rate constants for ozone formation", Chem. Phys. 187(1994)329-335.
  208. N. Balakrishnan and G. D. Billing, "Three-Dimensional Wavepacket Study of the Reaction OH+H2® H2O+H": A Mixed Quantal/classical Approach", Chem. Phys. 189(1994)499-509.
  209. G. D. Billing, "Quantum corrections to the classical path equations: The higher order correction terms" Chem. Phys. 189(1994)523-532.
  210. F. Y. Hansen, N. E. Henriksen and G. D. Billing, " New insight in the microscopic mechanism of the catalytic synthesis of ammonia" Surf. Sci. 324(1995)55-68.
  211. V. A. Zenevich, S. K. Pogrebnya, W. Lindinger, M. Cacciatore and G. D. Billing, "Vibrational relaxation in the NO+-He collision system: The role of the interaction potential anisotropy, J. Chem. Phys. 102, 6669-6674(1995).
  212. N. Markovic and G. D. Billing, "Wavepacket calculations on ion-molecule reactions", Chem. Phys. 191(1995)247-260.
  213. N. Balakrishnan and G. D. Billing, "Computer Simulation of the Reaction OH+H2® H2O+O using Semiclassical Wave Packet Methods", in Annual Supercomputing Report 1994, s. 45-47.
  214. N. Balakrishnan and G. D. Billing, Ä mixed quantal/classical study of the reaction OH+H2® H2O+H", Chem. Phys. Lett. 233(1995)145-153.
  215. V. M. Azriel, G. D. Billing, L. Yu. Rusin and M. B. Sevryuk, Ä test of the semiclassical Wigner method for the reaction F+H2®H+HF", Chem. Phys. 195(1995)243-258.
  216. M. B. Sevryuk and G. D. Billing, "Computer Simulation of Energy Transfer Processes in CO-doped Argon Clusters", Annual Supercomputing Report, 1994, s. 42-44.
  217. G. D. Billing, "Semi-classical formulation of molecule surface scattering using an EDIM-potential", J. Phys. Chem. 99(1995)15378-15386.
  218. L. Goubert, E. Desoppere, W. Wieme, R. Polak, I. Paidarova and G. D. Billing, "Semi-classical Study of Ar2*(3Su+) -Excimers in a Pure Ar-Afterglow by Means of a Diatomics-in-Molecules Potential Energy Surface for the Ar3*-System", J. Phys. Chem. 99(1995)15479-15487.
  219. G.D. Billing, L.Yu. Rusin and M.B. Sevryuk, "A wavepacket propagation study of inelastic and reactive F*D_2 scattering", J. Chem. Phys. 103 (1995) 2482-2494
  220. N. Balakrishnan and G.D. Billing "Variational Transition State Rate constants for the reaction O(^3P)+O_3(^1A_1) --> 2 O_"(X^3\Sigma_g^-)", Chem. Phys. Lett. 244 (1995) 68-74
  221. N.E. Henriksen, F.Y. Hansen and G.D. Billing, "The Surface Temperature Effect on the Dissociative Sticking of N_2 on Fe(111)", Chem. Phys. Lett. 244 (1995) 350-354
  222. G. D. Billing and K. V. Mikkelsen, Ïntroduction to Molecular Dynamics and Chemical Kinetics", John Wiley & Sons, 1996.
  223. G. D. Billing, N. Markovic and N. Balakrishnan, Äpplication of Semi-Classical Dynamics for Chemical Reactions", in "Dynamics of Molecules and Chemical Reactions", Ed. by R. E. Wyatt and J. Zhang, Marcel Dekker Inc. 1996, pp 531-559.
  224. G. D. Billing, "Quantum and Semi-classical Methods in Reactive Scattering" in New Methods in Quantum Theory, eds. C.A.Tsipis et al. 1996 Kluwer Academic Publishers, Holland, pp. 251-264.
  225. A. Gross and G. D. Billing, "Semiclassical treatment of molecular vibrational energy transfer in collision between vibrationally excited O3 and Ar", Chem. Phys. 202(1996)321-348.
  226. G. D. Billing, "Semi-classical treatment of the dynamics of molecule-surface interaction", in Molecular Physics and Hypersonic Flows, ed. M. Capitelli 1996 Kluwer Academic Publ., Holland, pp. 231-257.
  227. F. Aguillon, M. Sizun, V. Sidis, G. D. Billing and N. Markovic, "Semiclassical coupled wavepackets study of the non adiabatic collisions Ar+(J)+H2: zero angular momentum case", J. Chem. Phys. 104(1996)4530-4543.
  228. N. Markovic and G. D. Billing, "Wave packet calculations on ion-molecule reactions: The co-planar approximation", Chem. Phys. Lett. 248(1996)420-426.
  229. N. Balakrishnan and G. D. Billing, Ä quantum-classical study of the Reaction OH(v1,j1)+CO(v2,j2)® CO2+H", J. Chem. Phys. 104(1996)4005-4011.
  230. M. Cacciatore and G. D. Billing, "Dissociation and atom recombination of H2 and D2 on Metallic surfaces: A Theoretical Study", Pure and Applied Chemistry, 68(1996)1075-1081.
  231. N. Balakrishnan and G. D. Billing, "Semiclassical wave packet study of V-V energy transfer in highly excited CO molecules", Chem. Phys. 204(1996)77-87.
  232. G. D. Billing, "The Reaction-Volume hamiltonian for polyatomic three center reactions: The classical hamiltonian", Mol. Phys. 89(1996)355-372.
  233. G. D. Billing and N. Markovic, "Semi-classical treatment of chemical reactions", Chem. Phys. 209(1996)377-388.
  234. N. Balakrishnan and G. D. Billing, "Quantum-Classical Reaction Path Study of the Reaction O(3P)+O3(1A1)® 2O2(X3Sg-)", J. Chem. Phys. 104(1996)9481-9494.
  235. M. Sizun, F. Aguillon, V. Sidis, V. Zenevich, G. D. Billing and N. Markovic, "Theoretical investigation of the Ar+(J)+H2® ArH++H reaction: semiclassical coupled wavepacket treatment", Chem. Phys. 209(1996)327-353.
  236. K. Museth and G. D. Billing, "Generalization of the MCTDH method to non-adiabatic systems", J. Chem. Phys. 105(1996)9191-9199.
  237. G. D. Billing, "From first principles to industrial applications", in Applied Parallel Computing, eds. J. Wasniewski, J. Dongorra, K. Madsen and D. Olesen, Springer Verlag, 1996, pp.40-45.
  238. Gert D. Billing and Kurt V. Mikkelsen, Ädvanced Molecular Dynamcis and Chemical Kinetics", John Wiley & Sons, 1997.
  239. G. D. Billing, "Classical Path Equations in Molecular Collisions", Int. J. Thermophysics, 18, 977-990(1997).
  240. Birgitte Freiesleben Hansen and Gert D. Billing, "Hydrogen and deuterium recombination rates on a copper surface", Surf. Sci. Lett. 373, 333-338(1997).
  241. Allan Gross and Gert D. Billing, Ïsotope effect on the rate constants for the processes O2+O® O+O2 and O2+O+Ar®O3+Ar: A modified ground state potential energy surface for ozone." , Chem. Phys. 217, 1-18(1997).
  242. Gert D. Billing, "The Quantum-classical treatment of N-particle three center reactions", J. Chem. Soc., Faraday Trans. 93, 833-840(1997).
  243. Lichang Wang and Gert D. Billing, "Molecular dynamics studies of dissociation of O2 on Ag(111) surface", Chem. Phys. 224, 65-79(1997).
  244. A. Vijay and G. D. Billing, "Semiclassical wave packet calculations on ion-molecule reactions. Studies on B++H2 reaction", J. Chem. Phys. 107, 2974-2989(1997).
  245. G. Jolicard, P. A. Tuckey and G. D. Billing, "Determination of the active space in molecular dynamics by a time-dependent wave operator method", J. Chem. Phys. 107, 6290-98(1997).
  246. Geert-Jan Kroes, M.C.van Hemert, G. D. Billing and D. Neuhauser, "Photodissociation of CH2 (13B1) through the coupled 2A" and 3A" states: quantitative branching ratios for the production of CH+H and C+H2", Chem. Phys. Lett. 271(1997)311-319.
  247. N. Markovic and G. D. Billing, "Semi-classical treatment of chemical reactions: Extension to 3D wave packets", Chem. Phys. 224, 53-64(1997).
  248. G. D. Billing, "Quantum corrections to the classical path equations: The multitrajectory and Hermite correction", J. Chem. Phys. 107, 4286-4294(1997).
  249. S. Adhikari and G. D. Billing, "The Geometric Phase Effect in Chemical Reactions: A Quasi-classical Trajectory Study", J. Chem. Phys. 107, 6213-6218(1997).
  250. Geert-Jan Kroes, M. C. van Hemert, D. Neuhauser and G. D. Billing, "Photodissociation of CH2. VI. Three-dimensional quantum dynamics of the dissociation through the coupled 2A" and 3A" states.", J. Chem. Phys. 107, 5757-(1997).
  251. A. Koch and G. D. Billing, "The reaction volume hamiltonian method: Further development and application", J. Chem. Phys. 107, 7242-51(1997).
  252. S. K. Mengel and G. D. Billing, "The influence of electron-hole pair exciation on dissociative sticking", J. Phys. Chem. 101, 10781-90(1997).
  253. Gert D. Billing, "Mixed Classical Quantum Methods", in Encyclopedia of Computational Chemistry, ed. P. von Rague Schleyer, Wiley, New York 1998, pp. 1587-1599.
  254. M. Cacciatore, M. Rutigliano and G. D. Billing, Ënergy flows, recombination coefficients and dynamics for oxygen recombination on silica surfaces", AIAA paper no. 98-2843(1998)1-11.
  255. C. M. Laursen, E. Christoffersen and G. D. Billing, Ön the complexity of molecule surface reactions", Chem. Phys. Lett. 290, 275-281(1998).
  256. S. Adhikari and G. D. Billing, A Classical Mechanical study of Geometric Phase Effects in Chemical Reactions", Chem. Phys. Lett. 284, 31-38(1998).
  257. M. Rutigliano, G. D. Billing and M. Cacciatore, Ätom Recombination and Vibrational Distribution in O2 Molecules formed on Silica Surfaces", 21st International Symposium on Rarefied Gas Dynamics, 89-90(1998).
  258. G. D. Billing and A. Kuppermann, Ön the Geometric Phase effect on 4-atomic reactions: The OH+H2®H2O reaction", Chem. Phys. Lett. 294, 26-30(1998).
  259. G. D. Billing, "Vibrational relaxation by electron-hole pair excitation", Chem. Phys. Lett. 290,150-154(1998).
  260. S. Adhikari and G. D. Billing, "The Geometric Phase effect on differential cross sections in chemical reactions: A classical mechanical approach", Chem. Phys. Lett. 289, 219-223(1998).
  261. S. Adhikari and G. D. Billing, "Semiclassical reactive scattering: The Hermite correction in hyperspherical coordinates", Chem. Phys. 238, 69-80(1998).
  262. N. Balakrishnan, A. Dalgarno and G. D. Billing, " Multiquantum vibrational transitions in O2(v ³ 25)+O2(v=0) collisions", Chem. Phys. Lett. 288, 657-662(1998).
  263. K. Museth and G. D. Billing, "Reply to Comment on: Generalization of the multiconfigurational time-dependent Hartree method to non-adiabatic systems", J. Chem. Phys. 109, 351(1998).
  264. M. Cacciatore, M. Rutigliano and G. D. Billing, Ëley-Rideal and Langmuir-Hinshelwood Recombination Coefficients for Oxygen on Silica Surfaces", J. Thermophys. Heat Transfer 13, 195(1999).
  265. A. Hansel, N. Oberhofer, W. Lindinger, V. A. Zenevich and G. D. Billing, " Vibational relaxation of NO+(v) in collisions with CH4: experimental and theoretical studies", Int. J. Mass Spectry. and Ion Processes, 185-187, 559-563(1999).
  266. G. D. Billing, Ätomic and Molecular Processes on Surfaces", Plasma Physics Reports, 25, 32-37(1999).
  267. G. D. Billing, "Time-dependent quantum dynamics in a Gauss- Hermite basis", J. Chem. Phys. 110, 5526-37(1999).
  268. V. A. Zenevitch and G. D. Billing, "Vibrational-rotational energy transfer in H2-H2 collisions: I. Semiclassical decoupling approximation", J. Chem. Phys. 111, 2401-2406(1999).
  269. G. D. Billing, "Semiclassical treatment of atom-surface scattering: He-Cu(001) collisions", Appl. Surf. Sci. 142, 7-13(1999).
  270. S. Adhikari and G. D. Billing, "Hermite Correction Method in Hyperspherical Coordinates: Application to Chemical Reactions", Chem. Phys. Lett. 305, 109-116(1999).
  271. C. Coletti and G. D. Billing, "Reaction volume approach to N-particle reactions: New optimization scheme for defining the reaction volume", Phys.Chem.Chem.Phys. 1, 4141-4149(1999).
  272. S. Adhikari and G. D. Billing, "The Gauss-Hermite basis set in tunneling problems", Chem. Phys. Lett. 309, 249-256(1999).
  273. G. D. Billing, "Trajectory driven second quantization approach to quantum dynamics", Chem. Phys. 242, 341-351(1999).
  274. C. Coletti and G. D. Billing, Ïsotope effects on vibrational energy transfer in CO", J. Chem. Phys. 111, 3891-99 (1999).
  275. S. Adhikari and G. D. Billing, "The conical intersection effects and adiabatic single-surface approximations on scattering processes: A time-dependent wave packet approach", J. Chem. Phys. 111, 40-47(1999).
  276. S. Adhikari and G. D. Billing, "The Hermite Correction Method for non-adiabatic transitions", J. Chem. Phys. 111, 48-53(1999).
  277. G. D. Billing, Second quantization formulation of molecular dynamics", Phys. Chem. Chem. Phys. 1, 4687-4694(1999).
  278. A. Vijay, R. E. Wyatt and G. D. Billing, "Time propagation and spectral filters in quantum mechanics. A Hermite polynomial perspective", J. Chem. Phys. 111, 10794-10805 (1999).
  279. S. Adhikari and G. D. Billing, "The effect of a cluster on a chemical reaction: a quasiclassical trajectory study", Chem. Phys. 250, 295-301(1999).
  280. V. Zenevich, G. D. Billing and G. Jolicard, "Vibrational- rotational energy transfer in H2-H2 collisions: II. The relative roles of the initial rotational excitation of both diatoms.", Chem. Phys. Lett. 312, 530-535(1999).
  281. T. Nymand, K. V. Mikkelsen, P.-O. Å strand and G. D. Billing, "Dynamical model for SN2 reactions in microsolution: The Cl-+CH3Cl ®ClCH3+Cl- reaction", Acta. Chem. Scand. 53, 1043-1053(1999).
  282. G. D. Billing, "Dynamics of Molecule Surface Interactions", Wiley, 2000.
  283. G. D. Billing, "Quantum-classical formulation of molecular dynamics in a Gauss-Hermite basis: The second quantization formulation", J. Mol. Structure (Theochem), 501-502, 519-528(2000).
  284. G. D. Billing, "The role of electron-hole pair excitation in molecule surface collisions", J. Chem. Phys. 112, 335-343(2000)
  285. S. Adhikari and G. D. Billing, Ä time-dependent DVR method", J. Chem. Phys. 113, 1409-1414(2000).
  286. S. Adhikari and G. D. Billing, "Four dimensional quantum and two dimensional classical mechanical study of molecule-surface interaction", J. Chem. Phys. 112, 3884-3889(2000).
  287. G. D. Billing, "The reaction path method for chemical reactions", in Lecture Notes in Chemistry, Eds. W. Jakubetz and , Springer Verlag, 2000, pp. 127-166.
  288. M. Baer, S. H. Lin, A. Alijah, S. Adhikari and G. D. Billing, "The Extended Approximated Born-Oppenheimer Equation I. Theory", Phys. Rev. A 62, 32506-1-32506-8(2000).
  289. G. D. Billing, "Quantum-classical theories", in Lecture notes in Chemistry, Eds. A. Lagana and A. Riganelli, Springer Verlag, 117-131, 2000.
  290. S. Adhikari, G. D. Billing, A. Alijah, S.H.Lin and M. Baer, "The Extended Approximated Born-Oppenheimer Equation: II. Application", Phys. Rev. A 62, 32507-1-32507-7(2000).
  291. V. A. Zenevich, G. D. Billing and G. Jolicard, "Vibrational-rotational energy transfer in H2-H2 collisions: III. Ortho-ortho collisions", Mol. Phys. 98, 1691-1695(2000).
  292. G. D. Billing and S. Adhikari, "The time-dependent discrete variable representation in molecular dynamics", Chem. Phys. Lett. 321, 197-204(2000).
  293. S. Adhikari and G. D. Billing, "The Geometric Phase Effect in Chemical Reactions", Chem. Phys. 259, 149-172(2000).
  294. N. Markovic and G. D. Billing, Änalyses of the semi-classical wavepacket approach to chemical reactions: The F+H2 ® FH+H reaction", Mol. Phys. 98, 1771-1781(2000).
  295. C. Coletti and G. D. Billing, "Rate constants for vibrational energy transfer in carbon monoxide", J. Chem. Phys. 113, 4869-4875(2000).
  296. C. Coletti and G. D. Billing, "Semi-classical calculation of reaction cross sections and rates for the reaction H2+CN®HCN+H", J. Chem. Phys. 113, 11101-11108(2000)
  297. N. E. Henriksen, F. Y. Hansen and G. D. Billing, Ä Comment on Apparent Tunneling in Chemical Reactions", Chem. Phys. Lett. 330, 139-145(2000).
  298. C. Coletti and G. D. Billing, "Quantum-Classical Methods: A Quantum-Classical Approach to Diatom-Diatom Reactive Scattering and VV Energy Transfer", Eds. A. Lagana and A. Riganelli, Springer Verlag, 257-270, 2000.
  299. D. L. Huestis and G. D. Billing, "Theory of O-CO2 Collisions: Thermospheric Cooling on Venus, Earth and Mars", Eos. Trans. AGU 81, F931(2000).
  300. M. Baer and G. D. Billing, Ön the Quantum Mechanical and the Classical Topological Phases: A Study of a Degenerate Periodic System", Phys. Chem. A 105, 2509-2514(2001).
  301. G. D. Billing, "Quantum dressed classical mechanics", J. Chem. Phys. 114, 6641-6653(2001).
  302. G. D. Billing, "Reactive scattering in a time-dependent variable representation basis", Int. J. Quant. Chem. 84, 467-478(2001).
  303. G. D. Billing, Ïnelastic scattering by a time-dependent discrete variable representation method", Chem. Phys. 264, 71-80, 2001.
  304. G. D. Billing, Äpplication of quantum dressed classical mechanics: Molecule surface scattering", J. Phys. Chem. 105, 2340-2347(2001).
  305. G. D. Billing, Ä split Lanczos method for solving time-dependent discrete variable Gauss-Hermite dynamics", Chem. Phys. Lett. 339, 237-242(2001)
  306. M. Rutigliano, M. Cacciatore and G.D.Billing, "Hydrogen atom recombination on graphite at Ts = 10K via the Eley-Rideal mechanism", Chem. Phys. Lett. 340, 13(2001).
  307. C. Coletti and G. D. Billing, Quantum dressed classical mechanics: Application to chemical reactions", Chem. Phys. Lett. 342, 65-74(2001).
  308. M. S. Johnson, G. D. Billing, A. Gruodis and M. H. M. Janssen, "Photolysis of Nitrous Oxide Isotopomers Studied by Time-dependent Hermite Propagation", J. Phys. Chem. 105, 8672-8680(2001).
  309. G. D. Billing, "Quantum dressed classical mechanics: Application to non-adiabatic processes", Chem. Phys. Lett. 343, 130-138(2001).
  310. K. Feilberg, G.D. Billing and M.S. Johnson, "Quantum dressed classical mechanics: Application to the HO+CO --> H+CO_2 reaction", J. Phys. Chem. A 105 (2001) 11171-11176
  311. M. Baer, A. M. Mebel and G. D. Billing, "The Necessary Conditions for having a Rigorous Diabatic Potential Matrix", J. Phys. Chem. A 106, 6499-6507 (2002).
  312. J. Avery, M. Baer, and G. D. Billing, "Some properties of electronic non-adiabatic coupling terms", Mol. Phys. 100, 1011-1015(2002).
  313. G. D. Billing, "The Quantum-Classical Theory", Oxford University Press, 2003.
  314. M. S. Johnson, G. D. Billing, P. von Hessberg, B. Lassen and S. Nanbu, "Photolysis of OCS isotopomers",
  315. G. D. Billing, "Quantum dressed classical mechanics: Theory and application", for Physical Chemistry Chemical Physics (PCCP), 4, 2865-2877(2002).
  316. M. Baer, A. M. Mebel and G. D. Billing, "The Curl Equations as Substratum for the Derivation of Electronic Non-Adiabatic Coupling terms", Int. J. Quan. Chem. 90, 1577-1585 (2002).
  317. S. Adhikari and G. D. Billing, "Non-Adiabatic Effects in Chemical Reactions: Extended Born-Oppenheimer Equations and its' Applications", in "The Role of Degenerate States in Chemistry", Adv. Chem. Phys. Eds. G.D.Billing and M.Baer, Wiley, New York, 2002.
  318. C. Coletti, G. D. Billing, A. K. Kurnosov and A. P. Napartovich,"Sensitivity of molecular vibrational dynamics to energy exchange rate constant values", submitted.
  319. G. D. Billing, Äpplication of the reaction path method to the reaction: H+CH4®H2+CH3", Chem. Phys. 277, 325-340,2002.
  320. C. Coletti and G. D. Billing, "Vibrational energy transfer in O2-O2 collisions", Chem. Phys. Lett. 356, 14-23(2002).
  321. G. D. Billing, H. G. Yu and J. T. Muckerman, "Vibrational energy transfer and chemical reaction in HO+CO collisions", J. Chem. Phys. 117, 4755-4760(2002).
  322. A. Kurnosov, M. Cacciatore and G. D. Billing, "Vibrational Relaxation of CO in Collisions with N2", J. Phys. Chem. A submitted.
  323. G. D. Billing, "Quantum dressed classical mechanics", in Current Develoments in Atomic, Molecular and Chemical Physics with Applications", Ed. Man Mohan, Kluwer, Plenum Press , London
  324. C. Tully and G. D. Billing, "Dissociation of N2 on Ruthenium using an Embedded Diatomics in Molecules Potential", Chem. Phys. Lett. (in press).
  325. Günter Käb and G. D. Billing, "Semiclassical dynamics using a time-dependent orthorgonal basis", to be submitted.
  326. G. D. Billing, "Vibrational Energy Transfer in Hydrogen", submitted.
  327. G. D. Billing, "Quantum-classical treatments of molecular dynamics", (invited paper).
  328. C. Coletti and G. D. Billing, "Quantum dressed classical mechanics: Application to photoabsorption of pyrazine", Chem. Phys. Lett. 368, 289-298 (2003)



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