钠原子光谱实验中双黄线谱线强度比值的讨论

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谭志阳( 1997—) ，男，河南驻马店人，北京科技大学数理学院应用物理系2015 级本科生.

收稿日期: 2018-07-28

修回日期: 2018-12-03

网络出版日期: 2019-06-13

基金资助

教育部高等学校大学物理课程教学指导委员会教学研究项目( DWJZW201701hb) ; 北京科技大学校级教学改革研究项目 ( JG2018M52) 资助

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Discussion on the intensity ratio of sodium doublet in sodium atom spectroscopy experiment

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1. School of Physics and Mathematics，University of Science and Technology，Beijing 100083，China; 2. Basic Experimental Center for Natural Science，University of Science and Technology Beijing，Beijing 100083，China

Received date: 2018-07-28

Revised date: 2018-12-03

Online published: 2019-06-13

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通过分析低压钠灯的工作原理，发现低压钠灯中等离子体处于非局域热平衡态.本文采用适用于非等温等离子体的

日冕模型对钠原子光谱实验中双黄线谱线强度比值进行了计算. 计算结果与实验结果吻合较好，误差5%，很好地解释了实验

现象.

关键词： 低压钠灯; 谱线强度; 非等温等离子体; 日冕模型

谭志阳, 陈森, 吴平 . 钠原子光谱实验中双黄线谱线强度比值的讨论[J]. 大学物理, 2019 , 38(5) : 63 . DOI: 10.16854 /j.cnki.1000-0712.180448

By analyzing the working mechanism of the low-pressure sodium lamp，it is found that the plasma in

the low pressure sodium lamp is in non-local thermal equilibrium state. Therefore，this paper uses the corona model

suitable for non-isothermal plasma to calculate the intensity ratio of sodium doublet in the sodium atom spectroscopy

experiment. The calculated results agree well with the experimental results，with a five percent error，which gives a

good explanation for the experimental phenomenon.

Key words： low-pressure sodium lamp; line intensity; non-isothermal plasma; coronal mode

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