Spectroscopy and Spectral Analysis, Volume. 35, Issue 8, 2281(2015)
Measurement of Mole Ratio for Alkali Metal Mixture by Using Spectral Absorption Method
The ratio of alkali metal mixture is one of the most important parameters in gauge head belonging to the ultra-sensitivity inertial measurement equipment,which is required to detect precisely.According to the feature that ratio of alkali metal is related to alkali metal vapor density,the theory of optical depth is used to detect the ratio of alkali metal in the present article.The result shows that the data got by the theory of optical depth compared with empirical formula differs at three orders of magnitude,which can’t ensure the accuracy.By changing the data processing method,model between spectral absorption rate and temperature in cell is established.The temperature in alkali metal cell is calibrated by spectral absorption rate.The ratio of alkali metal atoms in the cell is analyzed by calculating the alkali density with empirical formula.The computational error is less than 10%.
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ZOU Sheng, ZHANG Hong, CHEN Yao, CHEN Xi-yuan. Measurement of Mole Ratio for Alkali Metal Mixture by Using Spectral Absorption Method[J]. Spectroscopy and Spectral Analysis, 2015, 35(8): 2281
Received: Jun. 9, 2014
Accepted: --
Published Online: Aug. 25, 2015
The Author Email: Sheng ZOU (zousheng927@seu.edu.cn)