Determination of Atomic Number Densities of ^87Rb and ^3He Based on Absorption Spectroscopy  

作　　者：郑慧婕 全伟 刘翔 陈瑶 陆吉玺 

机构地区：[1]Science and Technology on Inertial Laboratory, Beihang University, Beijing 100191 [2]Fundamental Science on Novel Instrument & Navigation System Technology Laboratory, Beihang University, Beijing 100191 [3]Shanghai Aerospace Control Engineering Research Institute, Shanghai 200233

出　　处：《Chinese Physics Letters》2014年第10期53-56,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 61227902 and 61374210, the Shanghai Academy of Space Flight Technology, and the National High-Technology Research and Development Program of China.

摘　　要：The atomic number densities of ^87 Rb vapor and surrounding gas 3He in a sealed cubic cell were measured by sweeping the absorption line and fitting the experimental data with a Lorentzian profile. The absorption was carried out around the D1 transition at different temperatures. We compare our results for the number density for^87 Rb with the previous methods and calculate the fractional error to be less than 5% as well as the error for ^3He between this work and the density obtained from the filling procedure to be no more than 4.2% at 370K. In addition, we discuss the factors that contribute to the error, among which the cell temperature plays the most important role.The atomic number densities of ^87 Rb vapor and surrounding gas 3He in a sealed cubic cell were measured by sweeping the absorption line and fitting the experimental data with a Lorentzian profile. The absorption was carried out around the D1 transition at different temperatures. We compare our results for the number density for^87 Rb with the previous methods and calculate the fractional error to be less than 5% as well as the error for ^3He between this work and the density obtained from the filling procedure to be no more than 4.2% at 370K. In addition, we discuss the factors that contribute to the error, among which the cell temperature plays the most important role.

分 类 号：O6-041[理学—化学] TS261.7[轻工技术与工程—发酵工程]