BBR-induced Stark shifts and level broadening in helium atom

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.

References in corpus (3)

• Non-relativistic bound states at finite temperature (I): the hydrogen atom
• Non-relativistic bound states at finite temperature (II): the muonic hydrogen
• Higher-order recoil corrections for singlet states of the helium atom

Cited by in corpus (4)

• Two-photon atomic level widths at finite temperatures
• Thermal corrections to the bound-electron $g$-factor
• Thermal radiative corrections to hyperfine structure of light hydrogen-like systems
• Lowest order thermal correction to the hydrogen recombination cross section in presence of blackbody radiation