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 (7)

• How exactly did the Universe become neutral?
• Non-relativistic bound states at finite temperature (I): the hydrogen atom
• Precision calculation of blackbody radiation shifts for optical frequency metrology
• Laser Probing of Neutron-Rich Nuclei in Light Atoms
• Non-relativistic bound states at finite temperature (II): the muonic hydrogen
• Higher-order recoil corrections for singlet states of the helium atom
• Access via laboratory experiments to the level mixing effect induced by blackbody radiation and its influence on the cosmological hydrogen recombination problem

Cited by in corpus (8)

• Radiative QED corrections to one-photon transition rates in hydrogen atom at finite temperatures
• Relativistic corrections to the thermal interaction of bound particles
• Two-photon atomic level widths at finite temperatures
• Thermal corrections of lowest order for a helium atom
• Thermal corrections to the bound-electron $g$-factor
• Thermal radiative corrections to hyperfine structure of light hydrogen-like systems
• Vertex-type thermal correction to the one-photon transition rates
• Lowest order thermal correction to the hydrogen recombination cross section in presence of blackbody radiation