钠原子光谱实验中双黄线谱线强度比值的讨论  

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

作　　者：谭志阳 陈森 吴平 TAN Zhi-yang;CHEN Sen;WU Ping(School of Physics and Mathematics,University of Science and Technology,Beijing 100083,China;Basic Experimental Center for Natural Science,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学数理学院,北京100083 [2]北京科技大学自然科学基础实验中心,北京100083

出　　处：《大学物理》2019年第5期63-65,共3页College Physics

基　　金：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

摘　　要：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.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.

关 键 词：低压钠灯 谱线强度 非等温等离子体 日冕模型 

分 类 号：O562.31[理学—原子与分子物理]