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arXiv · 1709.07210

BBR-induced Stark shifts and level broadening in helium atom

T. Zalialiutdinov·D. Solovyev·L. Labzowsky
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Abstract

The precise calculations of blackbody radiation (BBR)-induced Stark shifts and depopulation rates for low-lying states of helium atom with the use of variational approach are presented. An effect of the BBR-induced induced Stark-mixing of energy levels is considered. It is shown that this effect leads to a significant reduction of lifetimes of helium excited states. As a consequence the influence of Stark-mixing effect on the decay rates of metastable states in helium is discussed in context of formation processes of the cosmic microwave background.

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T. Zalialiutdinov, D. Solovyev, L. Labzowsky. 2017-09-21. BBR-induced Stark shifts and level broadening in helium atom. https://doi.org/10.1088/1361-6455/aa8e6e

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