Determination of Atomic Number Densities of 87Rb and 3He Based on Absorption Spectroscopy
ZHENG Hui-Jie1,2, QUAN Wei1,2**, LIU Xiang3, CHEN Yao1,2, LU Ji-Xi1,2
1Science and Technology on Inertial Laboratory, Beihang University, Beijing 100191 2Fundamental Science on Novel Instrument & Navigation System Technology Laboratory, Beihang University, Beijing 100191 3Shanghai Aerospace Control Engineering Research Institute, Shanghai 200233
Abstract：The atomic number densities of 87Rb 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 for87Rb 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 370 K. In addition, we discuss the factors that contribute to the error, among which the cell temperature plays the most important role.
. [J]. 中国物理快报, 2014, 31(10): 103203-103203.
ZHENG Hui-Jie, QUAN Wei, LIU Xiang, CHEN Yao, LU Ji-Xi. Determination of Atomic Number Densities of 87Rb and 3He Based on Absorption Spectroscopy. Chin. Phys. Lett., 2014, 31(10): 103203-103203.
2014, Vol. 31 
