BBR-induced Stark shifts and level broadening in a helium atom

The precise calculations of blackbody radiation (BBR)-induced Stark shifts and depopulation rates for low-lying states of a helium atom with the use of the variational approach are presented. An effect of the BBR-induced Stark-mixing of energy levels is considered. It is shown that this effect leads...

Full description

Saved in:
Bibliographic Details
Published inJournal of physics. B, Atomic, molecular, and optical physics Vol. 51; no. 1; pp. 15003 - 15008
Main Authors Zalialiutdinov, T, Solovyev, D, Labzowsky, L
Format Journal Article
LanguageEnglish
Published IOP Publishing 14.01.2018
Subjects
atomic transitions
helium
quantum electrodynamics
stark shifts
Online AccessGet full text

Cover

More Information
Summary:The precise calculations of blackbody radiation (BBR)-induced Stark shifts and depopulation rates for low-lying states of a helium atom with the use of the variational approach are presented. An effect of the BBR-induced Stark-mixing of energy levels is considered. It is shown that this effect leads to a significant reduction in the lifetimes of helium-excited states. As a consequence, the influence of the Stark-mixing effect on the decay rates of metastable states in helium is discussed in the context of formation processes of the cosmic microwave background.
Bibliography:JPHYSB-103921.R1
ISSN:0953-4075
1361-6455
DOI:10.1088/1361-6455/aa8e6e