受激钠原子的碰撞退极化

Physica Pub Date : 1974-10-01 DOI:10.1016/0031-8914(74)90282-1

M. Elbel, B. Kamke, W.B. Schneider

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引用次数: 18

摘要

钠蒸气被D2辐射激发。与入射光束成直角发射的荧光D2辐射的线偏振是作为添加惰性气体压力的函数来测量的。与入射光束平行的270欧的磁场可以使处于激发态的核自旋解耦。根据在压力升高时观察到的极化减小，导出了激发态电子错位的截面。在383 K时，稀有气体He, Ne, Ar, Kr, Xe分别是167 174 308 341 376 Å2。本文总结了这些和早期关于钠去极化的结果，并与Masnou等人、Reid和Lewis等人的理论结果进行了比较。双方达成了满意的协议。

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Collisional depolarization of excited sodium atoms

Sodium vapour is excited by D₂ radiation. The linear polarization of the fluorescent D₂ radiation emitted at right angles to the incident-light beam is measured as a function of the pressure of an added noble gas. A magnetic field of 270 Oe which points parallel to the incident-light beam, serves to decouple the nuclear spin in the excited state. From the decrease of the polarization observed at rising pressure, cross sections for the disalignment of the electron in the excited state are derived. They are 167, 174, 308, 341, 376 Å² for the noble gases He, Ne, Ar, Kr, Xe at 383 K. These and earlier results on sodium depolarization are summarized and compared with theoretical results by Masnou et al., Reid, and Lewis et al. Satisfactory agreement is obtained.

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Physica

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