Noble-gas quenching of rovibrationally excited H{sub 2}

Balakrishnan, N; Hubartt, Bradley C; Ohlinger, Luke; Forrey, Robert C

doi:10.1103/PHYSREVA.80.012704

Title: Noble-gas quenching of rovibrationally excited H{sub 2}

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Abstract

Collisions between noble-gas atoms and hydrogen molecules are investigated theoretically by solving the time-independent Schroedinger equation. Various initial states of the molecule are considered and the calculations are performed for each system over a large range of collision energies. Cross sections for quenching of rovibrationally excited states of H{sub 2} are reported for Ar and Kr colliders and comparisons are made with previous calculations involving He. For both Ar and Kr colliders, the effect of vibrational excitation is found to be more pronounced for ortho-H{sub 2}. The T{yields}0 limit of the total quenching rate coefficient, which is presented here as the imaginary part of a complex scattering length, is found to increase by about 7 orders of magnitude as the vibrational quantum number of ortho-H{sub 2} is increased from 1 to 10. Trends in the energy dependence for the heavier systems are very similar, including resonance behavior, which suggest that the dynamics of heavy noble-gas H{sub 2} systems are less sensitive to the fine details of the potential.

Authors:

Balakrishnan, N; Hubartt, Bradley C; Ohlinger, Luke; Forrey, Robert C ^[1]

Department of Chemistry, University of Nevada-Las Vegas, Las Vegas, Nevada 89154 (United States)

Publication Date:: Wed Jul 15 00:00:00 EDT 2009

OSTI Identifier:: 21313265

Resource Type:: Journal Article

Journal Name:: Physical Review. A

Additional Journal Information:: Journal Volume: 80; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevA.80.012704; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947

Country of Publication:: United States

Language:: English

Subject:: 74 ATOMIC AND MOLECULAR PHYSICS; ARGON; ATOM-MOLECULE COLLISIONS; ATOMS; COMPARATIVE EVALUATIONS; CROSS SECTIONS; ENERGY DEPENDENCE; ENERGY TRANSFER; EXCITATION; EXCITED STATES; HYDROGEN; KRYPTON; MOLECULES; POTENTIALS; QUENCHING; RESONANCE; SCATTERING LENGTHS; SCHROEDINGER EQUATION

Citation Formats


                    Balakrishnan, N, Hubartt, Bradley C, Ohlinger, Luke, Forrey, Robert C, and Department of Physics, Penn State University, Berks Campus, Reading, Pennsylvania 19610-6009. Noble-gas quenching of rovibrationally excited H{sub 2}.  United States: N. p., 2009. 
        Web.  doi:10.1103/PHYSREVA.80.012704.

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                    Balakrishnan, N, Hubartt, Bradley C, Ohlinger, Luke, Forrey, Robert C, & Department of Physics, Penn State University, Berks Campus, Reading, Pennsylvania 19610-6009. Noble-gas quenching of rovibrationally excited H{sub 2}.  United States.  https://doi.org/10.1103/PHYSREVA.80.012704

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                    Balakrishnan, N, Hubartt, Bradley C, Ohlinger, Luke, Forrey, Robert C, and Department of Physics, Penn State University, Berks Campus, Reading, Pennsylvania 19610-6009. 2009.  
        "Noble-gas quenching of rovibrationally excited H{sub 2}".  United States.  https://doi.org/10.1103/PHYSREVA.80.012704.

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@article{osti_21313265,

  title        = {Noble-gas quenching of rovibrationally excited H{sub 2}},

  author       = {Balakrishnan, N and Hubartt, Bradley C and Ohlinger, Luke and Forrey, Robert C and Department of Physics, Penn State University, Berks Campus, Reading, Pennsylvania 19610-6009},

  abstractNote = {Collisions between noble-gas atoms and hydrogen molecules are investigated theoretically by solving the time-independent Schroedinger equation. Various initial states of the molecule are considered and the calculations are performed for each system over a large range of collision energies. Cross sections for quenching of rovibrationally excited states of H{sub 2} are reported for Ar and Kr colliders and comparisons are made with previous calculations involving He. For both Ar and Kr colliders, the effect of vibrational excitation is found to be more pronounced for ortho-H{sub 2}. The T{yields}0 limit of the total quenching rate coefficient, which is presented here as the imaginary part of a complex scattering length, is found to increase by about 7 orders of magnitude as the vibrational quantum number of ortho-H{sub 2} is increased from 1 to 10. Trends in the energy dependence for the heavier systems are very similar, including resonance behavior, which suggest that the dynamics of heavy noble-gas H{sub 2} systems are less sensitive to the fine details of the potential.},

  doi          = {10.1103/PHYSREVA.80.012704},

  url          = {https://www.osti.gov/biblio/21313265},
  journal      = {Physical Review. A},

  issn         = {1050-2947},

  number       = 1,

  volume       = 80,

  place        = {United States},

  year         = {Wed Jul 15 00:00:00 EDT 2009},

  month        = {Wed Jul 15 00:00:00 EDT 2009}

}

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