Energy transfer in collisions between two vibrating molecules |
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| Affiliation: | 1. iHuman Institute, ShanghaiTech University, Shanghai 201210, China;2. National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China;3. Center for Drug Discovery, Department of Pharmaceutical Sciences and Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA;4. Departments of Biological Sciences and Chemistry, Bridge Institute, University of Southern California, Los Angeles, CA 90089, USA;5. Departments of Molecular Therapeutics and Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA;6. University of California, San Diego, La Jolla, CA 92093, USA;7. CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China;8. GPCR Consortium, San Marcos, CA 92078, USA;1. Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital and Harvard Medical School, Charlestown, Mass;2. FM Kirby Neurobiology Center, Children''s Hospital Boston, Boston, Mass;3. PUCRS, Programa de Pós-graduação em Biologia Celular e Molecular, Porto Alegre, Brazil;1. Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens 157 71, Greece;2. Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece;3. University Research Center of Ioannina (URCI) - Institute of Materials Science and Computing, Greece;4. Department of Chemistry, Northwestern University, Evanston, IL 60208, USA;5. Department of Chemistry, University of Crete, Voutes 71003, Herakleion, Greece;6. Department of Physics and Science of Advanced Materials Program, Central Michigan University, Mt. Pleasant, MI 48859, USA;7. Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens 157 71, Greece |
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| Abstract: | We study vibrational energy transfer in inelastic collinear collisions between two diatomic molecules. The system is represented by two linearly driven parametric oscillators with a bilinear, time-dependent residual coupling between them. We account for the time evolution of the linearly driven parametric oscillators with an operator algebra, and use perturbation theory and basis expansions to include the residual coupling. Results are presented for H2FH and N2CO. Direct two-quantum transitions are found to be important even for low relative collision energies. |
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