Influence of humidity on the characteristics of laser-induced air plasma
文献类型:期刊论文
作者 | Lei, Bingying1,2; Wang, Jing1,2; Li, Jing1,2; Tang, Jie1,2; Wang, Yishan1,2; Zhao, Wei1,2; Duan, Yixiang1,4 |
刊名 | JAPANESE JOURNAL OF APPLIED PHYSICS |
出版日期 | 2018-10 |
卷号 | 57期号:10 |
ISSN号 | 0021-4922;1347-4065 |
DOI | 10.7567/JJAP.57.106001 |
产权排序 | 1 |
英文摘要 | The dependence of laser-induced breakdown spectroscopy (LIBS) on ambient conditions has not been clearly clarified as yet for element qualitative and quantitative analysis. To fill this gap, a laser-induced air plasma was produced by focusing a 1064-nm laser beam of Q-switched Nd:YAG pulse laser and the influence of relative humidity on the air plasma was systematically investigated by varying humidity at different laser irradiances. In contrast to the early findings, i.e., weak dependence of plasma properties on the humidity, some distinctive characteristics have been observed and explained. Examining the time-resolved emission spectra shows that the temporal evolution of spectral lines almost remains unchanged with the humidity and the influence of humidity on emission spectra can be neglected under a short gate width less than several hundred nanoseconds. As for the time-integrated emission spectra obtained at a higher laser irradiance, the increase in the emission intensity of H and O with the humidity is attributed to the increasing mole fraction of H and O and more laser energy that can be absorbed by the increasing water vapor. A faster growth of emission intensity of H and a slower increase of emission intensity of O respectively result from the relatively large increase of mole fraction of H and the relatively small increase of mole fraction of O with the humidity. Observations indicate that a shorter gate width or a lower laser irradiance is preferable in reducing the humidity influence and a certain magnitude of emission intensity of H and O spectral lines should be subtracted from the measured spectra for a more accurate and more reliable LIBS examination. (C) 2018 The Japan Society of Applied Physics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000445119800001 |
源URL | [http://ir.opt.ac.cn/handle/181661/30644] |
专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
通讯作者 | Tang, Jie |
作者单位 | 1.Xian Inst Opt & Precis Mech CAS, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Spectral Imaging Technol, Xian 710119, Shaanxi, Peoples R China 4.Sichuan Univ, Coll Life Sci, Res Ctr Analyt Instrumentat, Chengdu 610041, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Lei, Bingying,Wang, Jing,Li, Jing,et al. Influence of humidity on the characteristics of laser-induced air plasma[J]. JAPANESE JOURNAL OF APPLIED PHYSICS,2018,57(10). |
APA | Lei, Bingying.,Wang, Jing.,Li, Jing.,Tang, Jie.,Wang, Yishan.,...&Duan, Yixiang.(2018).Influence of humidity on the characteristics of laser-induced air plasma.JAPANESE JOURNAL OF APPLIED PHYSICS,57(10). |
MLA | Lei, Bingying,et al."Influence of humidity on the characteristics of laser-induced air plasma".JAPANESE JOURNAL OF APPLIED PHYSICS 57.10(2018). |
入库方式: OAI收割
来源:西安光学精密机械研究所
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。