Threshold energy dependence of intramolecular vibrational redistribution (IVR) rates of isolated polyatomic molecules |
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| Affiliation: | 1. Institute of Applied Physics, Vienna University of Technology, Wiedner Hauptstrasse. 8-10, 1040 Vienna, Austria;2. Faculty of Physics, Semnan University, Semnan, Iran;3. Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163/MC, 1060 Vienna, Austria;4. Institute of Material Science and Technology, Vienna University of Technology, Favoritenstrasse. 9-11, 1040 Vienna, Austria;1. Department of Engineering Science, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu-shi, Tokyo 182-8585, Japan;2. College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan;3. Technical Institute of Physics and Chemistry, China Academy of Science, P.O. Box 2711, Beijing 100080, China;4. Research Institute for Science and Technology, Tokyo University of Science, Yamasaki 2641, Noda 275-8510, Japan;1. North China Electrical Power University, Beijing, China;2. China Electric Power Research Institute, Beijing, China |
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| Abstract: | A thermodynamic Green's function technique is successfully applied to the calculation of IVR rates of polyatomic molecules. The energy dependence of IVR rates has interesting threshold features: rates are zero below some critical energy Ec, and non-zero for higher energies. This dependence can be understood as a transition from regular to chaotic intramolecular motion. |
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