Elsevier

Physica B+C

Volume 81, Issue 2, February 1976, Pages 381-391
Physica B+C

Frequency dependence of the polarization of radiation emitted by polarized atoms

https://doi.org/10.1016/0378-4363(76)90076-0Get rights and content

Abstract

We study the possible sources of frequency-dependent polarization of the radiation emitted by polarized excited atoms immersed in a perturbing gas. For an isolated line we conclude that a frequency dependence may be due to correlation between Doppler and collisional broadening, to anisotropy in the translational states or in the internal states of the perturbers, or to an external field. For an atomic multiplet the effect of line coupling may cause transfer of radiation emitted by atoms in a certain excited state to lines attributed to other excited states. This would cause a frequency-dependent polarization. Further the simple proportionality of the intensity of a broadened multiplet line to the population of the corresponding upper state would be destroyed.

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