Application of exchange perturbation theories to calculating collisional hyperfine line shifts for hydrogen atoms in helium

Research output


Hirschfelder-Silbey and Amos-Musher were the first to calculate the collisional hyperfine line shift for the ground state of hydrogen in a helium atmosphere using exchange theories of perturbation. The relationship between their result and later calculations based on other exchange perturbation theories is discussed. A more accurate equation for calculating the relative local hyperfine line shift is suggested which gives good agreement with experiment.

Original languageEnglish
Pages (from-to)881-885
Number of pages5
JournalSoviet physics. Technical physics
Issue number8
Publication statusPublished - 1 Jan 1983


Scopus subject areas

  • Environmental Science(all)
  • Engineering(all)
  • Earth and Planetary Sciences(all)

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