量子电子学报2024，Vol.41Issue(6)：852-860,9.DOI:10.3969/j.issn.1007-5461.2024.06.002
基于激光吸收光谱的Cs原子浓度检测系统设计研究
Design and research of Cs atomic concentration detection system based on laser absorption spectroscopy
摘要
Abstract
It is well known that in magnetic confinement fusion research,the extraction current density of negative hydrogen ion source depends on the negative hydrogen ion density formed on the metal surface with low work function.Therefore,the formation of negative hydrogen ions is largely dependent on the dynamics of cesium in the source,and optimizing the performance of ion source to improve the extraction current density is a prerequisite.Based on the tunable semiconductor laser absorption spectroscopy,a new system for detecting cesium concentration in discharge chamber was designed and established to achieve rapid and real-time detection of trace Cs.The system design mainly focused on four aspects:light source generation unit,optical transmission testing unit,signal processing acquisition unit,and spectral display and analysis unit.And then an off-line testing system was established and system testing experiments were conducted.The curve of cesium concentration with temperature was obtained.As the temperature of the vapor cell increases,the detected Cs atom concentration exhibits a nonlinear positive correlation with temperature,demonstrating that the system enables quantitative detection of Cs atom concentration.关键词
光谱学/可调谐二极管激光/激光吸收光谱/Cs原子浓度Key words
spectroscopy/tunable diode laser/laser absorption spectroscopy/Cs atomic concentration分类
数理科学引用本文复制引用
宋泽阳,梁立振,柳山虎,田镇虎,韦江龙,许永建,谢亚红,胡纯栋..基于激光吸收光谱的Cs原子浓度检测系统设计研究[J].量子电子学报,2024,41(6):852-860,9.基金项目
安徽省自然科学基金(2208085MA19),国家重点研发计划专项(2017YFE300103,2017YFE300101) （2208085MA19）
