文献类型：期刊文献

英文题名：Calculation of vibrational relaxation times in multi-component excitable gases

作者：Zhang, Ke-Sheng Ou, Weihua Jiang, Xueqin Long, Fei Hu, Mingzhe

第一作者：张克声

通信作者：Zhang, KS[1]

机构：[1]Guizhou Inst Technol, Sch Informat Engn, Guiyang 550003, Peoples R China;[2]Guizhou Univ, Inst Intelligent Informat Proc, Guiyang 550025, Peoples R China;[3]Liupanshui Normal Univ, Dept Phys & Elect Sci, Liupanshui 553004, Guizhou, Peoples R China

第一机构：贵州理工学院电气与信息工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Informat Engn, Guiyang 550003, Peoples R China.|贵州理工学院电气与信息工程学院;贵州理工学院;

年份：2014

卷号：65

期号：7

起止页码：1028-1035

外文期刊名：JOURNAL OF THE KOREAN PHYSICAL SOCIETY

收录：;Scopus(收录号：2-s2.0-84910003013);WOS:【SCI-EXPANDED(收录号:WOS:000344333300012)】；

基金：The authors would like to thank the anonymous reviewers for their constructive and insightful comments for further improving the quality of this work. This work is supported by National Natural Science Foundation of China (Grant Nos. 61461008, 61402122, 61371139, 61263005), the Recruitment Program of Guizhou Institute of Technology (Grant No. XJGC20140601), the National Science Foundation of Guizhou Province (No. 20132092), the key project of the Education Department of Guizhou Province (No. 2013174), and the Program for New Century Excellent Talents in Chinese Universities (Grant No. NCET-12-0657).

语种：英文

外文关键词：Relaxation time; Relaxation frequency; Acoustic relaxation process; Sound relaxational absorption

摘要：In the research field of acoustic propagation in excitable gases, one of the most critical parameters is the vibrational relaxation time, which determines the frequency of the acoustic dispersion step or the absorption maximum. In this paper, the vibrational relaxation equations given by Tanczos [J. Chem. Phys. 25, 439 (1956)] have been applied to calculate the vibrational multi-relaxation times in multi-component gases. The eigenvalues of the energy-transition-rate matrix are proven to be the reciprocals of the multi-relaxation times. Comparisons demonstrate that our relaxation frequencies calculated for various gas compositions, including carbon dioxide, methane, chlorine, nitrogen, and oxygen, agree with the experimental data.