速度调制光谱技术特性的研究  

On the Characteristics of Velocity Modulation Laser Spectroscopy

作　　者：高晖[1] 刘红平[1] 段传喜[1] 林洁丽[1] 郭远清[1] 刘效庸[1] 黄光明[2] 李津蕊[1] 李奉延[1] 刘煜炎[1] 

机构地区：[1]中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室 [2]华中师范大学物理系,武汉430079

出　　处：《光谱学与光谱分析》2001年第3期279-283,共5页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金资助!项目编号为 1 970 4 0 1 6

摘　　要：利用N+2 A2 Πu X2 Σ+g(2 0 )Meinel带系谱线研究了速度调制光谱技术的特性。从理论和实验上考察了速度调制光谱信号强度与放电电流、放电气体的气压以及真空泵的泵速的关系。利用所获得的研究结果提高谱仪的灵敏度和分辨率达 3倍以上 ,实验运行开支节省 3/4左右。The technical properties of velocity modulation laser spectroscopy were investigated using the spectrum of A(2)Pi (u)-X(2)Sigma (+)(g) (2-0) band of Meinel system of N-2(+). The dependence of spectral intensity on discharge current, the pressure of the gas mixture and the pump velocity of the vacuum pump were studied. Making uses of the results of these studies, the sensitivity and resolution of the spectrometer are improved by above 3 times, and economized the experimental expenses can be reduced to as 3/4 time as normal, which confirms that the results of this paper is of considerable uses.

关 键 词：速度调制光谱技术 激光光谱 分子离子 泵速 辉光放电电池 信号强度 放电电流 真空泵 

分 类 号：O433.54[机械工程—光学工程]