文献类型：期刊文献

英文题名：Decoupling Multiple Rotational Relaxations of Hydrogen to Detect Gas Mixtures

作者：Zhang, Xiangqun Wang, Shu Zhu, Ming Zhang, Kesheng Liu, Tingting Peng, Gongwei

第一作者：Zhang, Xiangqun

通信作者：Zhu, M[1]

机构：[1]Huazhong Univ Sci & Technol, Sch Elect Informat & Commun, Wuhan 430074, Hubei, Peoples R China;[2]Xuchang Univ, Sch Informat Engn, Xuchang 461000, Peoples R China;[3]Guizhou Inst Technol, Sch Elect & Informat Engn, Guiyang 550003, Guizhou, Peoples R China;[4]Hubei Univ Educ, Sch Phys & Elect Informat, Lab Millimeter Wave & Terahertz Technol, Wuhan 430205, Hubei, Peoples R China

第一机构：Huazhong Univ Sci & Technol, Sch Elect Informat & Commun, Wuhan 430074, Hubei, Peoples R China

通信机构：corresponding author), Huazhong Univ Sci & Technol, Sch Elect Informat & Commun, Wuhan 430074, Hubei, Peoples R China.

年份：2019

卷号：7

起止页码：115774-115782

外文期刊名：IEEE ACCESS

收录：;EI(收录号：20205009615002);Scopus(收录号：2-s2.0-85075879098);WOS:【SCI-EXPANDED(收录号:WOS:000484230200016)】；

基金：This work was supported in part by the National Natural Science Foundation of China under Grant 61571201, Grant 61873322, and Grant 11847132, in part by the State Scholarship Fund of the China Scholarship Council under Grant 201708525058, and in part by the Program for Science and Technology Innovation Talents in Universities of Henan Province under Grant 18HASTIT022.

语种：英文

外文关键词：Acoustic absorption; vibrational relaxation; decoupling model; multiple rotational relaxation

摘要：Decoupling multiple acoustic relaxations in multi-component gas mixtures is an effective method to acquire acoustic relaxation characteristic of gas molecules, which can be used to determine gas composition. However, decoupling multiple rotational relaxations of hydrogen still remains challenge. In this paper, we present the decoupling model of hydrogen and decouple the multiple rotational relaxation into the group of single-relaxation ones. Based on this model, the whole rotational relaxation process of hydrogen can be simplified as a few decoupled single rotational relaxation processes. The decoupled results of the effective specific heat, the absorption spectrum and the acoustic velocity dispersion agree with the experimental data, which validates our decoupling model. Furthermore, the proposed decoupling rotational relaxation model can be combined with the existing decoupling vibration model to detect gas mixture. Applications in the detection of gas mixtures including N-2,CO2, O-2 and H-2 are provided. Compared with existing gas sensing method ignoring rotational relaxation, our detection result of gas mixtures H-2 - O-2 - H2O is more convincing since the proposed decoupling model contains significant rotational relaxation of hydrogen. Therefore, the proposed decoupling model not only reveals the mechanism of multiple rotational relaxations of hydrogen, but also provides the new method to detect hydrogen gas mixtures.