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Abrahamsson E, Groenenboom GC, Krems RV. Spin-orbit relaxation of Cl(P1∕22) and F(P1∕22) in a gas of H2. J Chem Phys 2007; 126:184303. [PMID: 17508799 DOI: 10.1063/1.2732751] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The authors present quantum scattering calculations of rate coefficients for the spin-orbit relaxation of F(2P1/2) atoms in a gas of H2 molecules and Cl(2P1/2) atoms in a gas of H2 and D2 molecules. Their calculation of the thermally averaged rate coefficient for the electronic relaxation of chlorine in H2 agrees very well with an experimental measurement at room temperature. It is found that the spin-orbit relaxation of chlorine atoms in collisions with hydrogen molecules in the rotationally excited state j=2 is dominated by the near-resonant electronic-to-rotational energy transfer accompanied by rotational excitation of the molecules. The rate of the spin-orbit relaxation in collisions with D2 molecules increases to a great extent with the rotational excitation of the molecules. They have found that the H2/D2 isotope effect in the relaxation of Cl(2P1/2) is very sensitive to temperature due to the significant role of molecular rotations in the nonadiabatic transitions. Their calculation yields a rate ratio of 10 for the electronic relaxation in H2 and D2 at room temperature, in qualitative agreement with the experimental measurement of the isotope ratio of about 5. The isotope effect becomes less significant at higher temperatures.
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Affiliation(s)
- Erik Abrahamsson
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z3 Canada
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Zeimen WB, Kłos J, Groenenboom GC, van der Avoird A. Diabatic intermolecular potentials and bound states of open-shell atom–molecule dimers: Application to the F([sup 2]P)–H[sub 2] complex. J Chem Phys 2003. [DOI: 10.1063/1.1562623] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Han J, Heaven MC, Manke GC. Hydrogen Atom Reactions with Molecular Halogens: The Rate Constants for H + F2 and H + Cl2 at 298 K. J Phys Chem A 2002. [DOI: 10.1021/jp020293d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiande Han
- Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | | | - Gerald C. Manke
- Air Force Research Laboratory, Directed Energy Directorate, Kirtland AFB, New Mexico 87117
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Aquilanti V, Cavalli S, Pirani F, Volpi A, Cappelletti D. Potential Energy Surfaces for F−H2 and Cl−H2: Long-Range Interactions and Nonadiabatic Couplings. J Phys Chem A 2001. [DOI: 10.1021/jp003782r] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vincenzo Aquilanti
- Dipartimento di Chimica and INFM, Università di Perugia, 06123 Perugia, Italy
| | - Simonetta Cavalli
- Dipartimento di Chimica and INFM, Università di Perugia, 06123 Perugia, Italy
| | - Fernando Pirani
- Dipartimento di Chimica and INFM, Università di Perugia, 06123 Perugia, Italy
| | - Alessandro Volpi
- Dipartimento di Chimica and INFM, Università di Perugia, 06123 Perugia, Italy
| | - David Cappelletti
- Dipartimento di Ingegneria Civile ed Ambientale and INFM, Università di Perugia, 06125 Perugia, Italy
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Alexander MH, Manolopoulos DE, Werner HJ. An investigation of the F+H2 reaction based on a full ab initio description of the open-shell character of the F(2P) atom. J Chem Phys 2000. [DOI: 10.1063/1.1326850] [Citation(s) in RCA: 223] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nizkorodov SA, Harper WW, Chapman WB, Blackmon BW, Nesbitt DJ. Energy-dependent cross sections and nonadiabatic reaction dynamics in F(2P3/2,2P1/2)+n–H2→HF(v,J)+H. J Chem Phys 1999. [DOI: 10.1063/1.480182] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chapman WB, Blackmon BW, Nizkorodov S, Nesbitt DJ. Quantum state-resolved reactive scattering of F+H2 in supersonic jets: Nascent HF(v,J) rovibrational distributions via IR laser direct absorption methods. J Chem Phys 1998. [DOI: 10.1063/1.477592] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Azriel VM, Rusin LY, Sevryuk MB, Toennies J. Effect of the angular dependence of the barrier height on the features of the F+H2 reaction. Chem Phys 1998. [DOI: 10.1016/s0301-0104(98)00087-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Baer M, Faubel M, Martı́nez-Haya B, Rusin LY, Tappe U, Toennies JP. State-to-state differential cross sections for the reaction F+D2 at 90 meV: A crossed molecular beam experiment and a quantum mechanical study. J Chem Phys 1998. [DOI: 10.1063/1.476445] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Elastic and rotationally inelastic scattering of fluorine atoms by deuterium molecules at 112 meV collision energy. Chem Phys 1998. [DOI: 10.1016/s0301-0104(97)00375-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Dharmasena G, Copeland K, Young JH, Lasell RA, Phillips TR, Parker GA, Keil M. Angular Dependence for ν‘, j‘-Resolved States in F + H2 → HF(ν‘, j‘) + H Reactive Scattering Using a New Atomic Fluorine Beam Source. J Phys Chem A 1997. [DOI: 10.1021/jp970918l] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gamini Dharmasena
- Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019-0225
| | - Kyle Copeland
- Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019-0225
| | - Joel H. Young
- Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019-0225
| | - Rosemary A. Lasell
- Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019-0225
| | - Timothy R. Phillips
- Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019-0225
| | - Gregory A. Parker
- Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019-0225
| | - Mark Keil
- Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019-0225
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Faubel M, Martínez-Haya B, Rusin LY, Tappe U, Toennies JP. Experimental Absolute Cross-Sections for the Reaction F + D2at Collision Energies 90−240 meV. J Phys Chem A 1997. [DOI: 10.1021/jp970436+] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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F-D2 state resolved reactive scattering at 180 and 240 meV collision energies. I. A high resolution crossed molecular beam experiment. Chem Phys 1996. [DOI: 10.1016/0301-0104(95)00359-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Gianturco F, Ragnetti F, Faubel M, Martínez-Haya B, Rusin L, Sondermann F, Tappe U. A further test of the shape and anisotropy of the FH2 interaction potential. Chem Phys 1995. [DOI: 10.1016/0301-0104(95)00255-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Schiffman A, Chandler DW. Experimental measurements of state resolved, rotationally inelastic energy transfer. INT REV PHYS CHEM 1995. [DOI: 10.1080/01442359509353315] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Billing GD, Rusin LY, Sevryuk MB. A wave packet propagation study of inelastic and reactive F+D2 scattering. J Chem Phys 1995. [DOI: 10.1063/1.469670] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Faubel M, Martínez-Haya B, Rusin L, Tappe U, Toennies J. A scattering study of the dependence of the F + D2(ji = 0, 1, 2) → DF(νf,jf) + D reaction on the initial rotational state. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(94)01337-u] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Faubel M, Gianturco FA, Ragnetti F, Rusin LY, Sondermann F, Tappe U, Toennies JP. The H2–Ne interaction. J Chem Phys 1994. [DOI: 10.1063/1.468073] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Faubel M, Rusin L, Schlemmer S, Sondermann F, Tappe U, Toennies JP. A high resolution crossed molecular beam investigation of the absolute cross sections and product rotational states for the reaction F+D2(vi=0;ji=0,1)→DF(vf;jf)+D. J Chem Phys 1994. [DOI: 10.1063/1.467718] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Rubahn H, Slenczka A, Toennies JP. Observation of an anomalous increase in total cross sections with high vibrational excitation in the Li2 (v=0–21)+Na reactive system. J Chem Phys 1994. [DOI: 10.1063/1.467818] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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