Semiclassical model for the distribution of final polar angles and m′ states in rotationally inelastic collisions
| Autor: | A. P. Hickman, Dahbia Talbi, T. J. Price, A. C. Towne |
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| Přispěvatelé: | Physics, Lehigh University, lehigh department of physics, Laboratoire Univers et Particules de Montpellier (LUPM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), physics Lehigh University, Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Angular momentum 010304 chemical physics [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR] Inelastic collision General Physics and Astronomy Semiclassical physics Physics and Astronomy(all) 010402 general chemistry 01 natural sciences 0104 chemical sciences Distribution (mathematics) 0103 physical sciences Thermal Polar [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] Physical and Theoretical Chemistry Polar coordinate system Atomic physics Quantum health care economics and organizations |
| Zdroj: | Chemical Physics Letters Chemical Physics Letters, Elsevier, 2016, pp.180. ⟨10.1016/j.cplett.2015.12.037⟩ |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cplett.2015.12.037 |
| Popis: | Using the venerable vector model, we develop an expression for the change in the polar angle of the angular momentum of a rotator caused by collisions in a cell-type experiment. For an initial j precessing with polar angle θ , and a given distribution of ‘tipping angles’, we derive the distribution of final polar angles θ ′. Final m ′ levels are also determined. The results agree well with exact quantum calculations for thermal collisions of He or Ar with NaK. We also identify a special case where the distribution of θ ′ has a simple Lorentzian form. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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