文献类型：期刊文献

中文题名：Calculation of vibrational energy transition rates in acoustic relaxation processes for excitable gas molecules

英文题名：Calculation of vibrational energy transition rates in acoustic relaxation processes for excitable gas molecules

作者：Zhang, Kesheng Zhang, Xiangqun Tang, Wenyong Xiao, Yingqun Jiang, Xueqin

第一作者：张克声

通信作者：Tang, Wenyong|[14440751282ad02179f1f]唐文勇;

机构：[1] School of Electrical and Information Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [2] School of Electronic Information and Communication, Huazhong University of Science and Technology, Wuhan, 430074, China; [3] School of Big Data, Guizhou Institute of Technology, Guiyang, 550003, China

第一机构：贵州理工学院电气与信息工程学院

通信机构：School of Electrical and Information Engineering, Guizhou Institute of Technology, Guiyang, 550003, China|贵州理工学院电气与信息工程学院;贵州理工学院;

年份：2018

卷号：37

期号：2

起止页码：399-409

中文期刊名：Chinese Journal of Acoustics

外文期刊名：Shengxue Xuebao/Acta Acustica

收录：CSTPCD;;EI(收录号：20182205263480);Scopus(收录号：2-s2.0-85047603887);北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：supported by the National Natural Science Foundation of China(61461008,61371139,61571201,61540051);the China Scholarship Council Project(201708525058);the National Science Foundation of Guizhou Province,China(Qian Ke He J Zi[2015]2065),Qian Ke He LH Zi[2014]7361);the Recruitment Program of Guizhou Institute of Technology(XJGC20140601,XJGC20150107)

语种：英文

中文关键词：Calculation of vibrational energy transition rates in acoustic relaxation processes for excitable gas molecules

外文关键词：Energy transfer - Gas mixtures - Carbon dioxide

摘要：To research the correlation between vibrational energy transition rates and acoustic relaxation processes in excitable gases, the vibrational relaxation theory provided by Tanczos [J. Chem. Phy3. 25, 439 （1956）] is applied to calculate the energy transition rates of Vibrational- Vibrational （V-V） and Vibrational-Translational （V-T） energy transfer in gas mixtures. The results of calculation for the multi-relaxation processes in various gas mixtures, consisting of carbon dioxide, methane, chlorine, nitrogen, and oxygen at room temperature, demonstrate that the acoustic energy stagnated in every vibrational mode is coupled with each other through V-V energy exchanges. The vibrational excitation energy will relax through the V-T de-excitation path of the lowest mode because of its fastest V-T transition rate, resulting in that only one absorption peak can be measured for most of excitable gas mixtures. Thus, an effective model is provided to analyze how the vibrational energy transition rates affect the characteristics of acoustic relaxation processes and acoustic propagation in excitable gas mixtures.
To research the correlation between vibrational energy transition rates and acoustic relaxation processes in excitable gases, the vibrational relaxation theory provided by Tanczos [J. Chem. Phys. 25, 439 (1956)] is applied to calculate the energy transition rates of Vibrational-Vibrational (V-V) and Vibrational-Translational (V-T) energy transfer in gas mixtures. The results of calculated vibrational energy transition rates for the multi-relaxation processes in various gas mixtures, consisting of carbon dioxide, methane, chlorine, nitrogen, and oxygen at room temperature, demonstrate that the acoustic energy stagnated in every vibrational mode is coupled with each other through V-V energy exchanges. The vibrational excitation energy will relax through the V-T de-excitation path of the lowest mode because of its fastest V-T transition rate, resulting in only one absorption peak can be measured for most of excitable gas mixtures. Thus, an effective model is provided to analyze how the vibrational energy transition rates affect the characteristics of acoustic relaxation processes and acoustic propagation in excitable gas mixtures. ? 2018 Acta Acustica.