Collisional broadening and shift of neutral argon spectral lines
Collisional broadening and shift of neutral argon spectral lines
复制标题
中性氩谱线的碰撞展宽和移动
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
D. Evans
中科院分区：
文献类型：
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作者：
D. Aeschliman;R. A. Hill;D. Evans
中性氩谱线的碰撞自展宽和位移已被确定为终止于较低共振或较低亚稳态水平的几条谱线的原子密度 $N$ 的函数。这些线由配备有毛细管内热电偶的变压放电管发出，并使用压力扫描法布里-珀罗干涉仪进行观察。使用 Whiting's Voigt 函数对所有轮廓强度点的最小二乘拟合来分析线轮廓。特别注意气体温度的确定，由此计算$N$。使用路易斯分析检查了非共振相互作用对通过共振跃迁连接到基态的线的展宽和移动的贡献。
The collisional self-broadening and shift of neutral argon spectral lines have been determined as a function of atom density $N$ for several lines terminating on either the lower resonance or lower metastable levels. The lines were emitted by a variable-pressure discharge tube equipped with intracapillary thermocouples, and were observed using a pressure-scanned Fabry-Perot interferometer. The line profiles were analyzed using a least-squares fit of Whiting's Voigt function to all profile intensity points. Particular attention was given to the determination of the gas temperature, from which $N$ was calculated. The contribution of nonresonant interactions to the broadening and shift of lines connected to the ground state via resonant transitions was examined using the analysis of Lewis.