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

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

5 Цитирования (Scopus)

Аннотация

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.
Язык оригиналаанглийский
Номер статьи015003
Число страниц6
ЖурналJournal of Physics B: Atomic, Molecular and Optical Physics
Том51
Номер выпуска1
DOI
СостояниеОпубликовано - 14 янв 2018

Предметные области Scopus

  • Физика и астрономия (все)
  • Физика конденсатов
  • Атомная и молекулярная физика и оптика

Ключевые слова

  • quantum electrodynamics
  • helium
  • atomic transitions
  • stark shifts

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