Spectral line profiles in a planetary corona: A collisional model

The theory of spectral line profiles for a planetary corona (Chamberlain, 1976) is extended to include the effects of H‐H + resonant charge exchange in which satellite particles are omitted (Chamberlain, 1977). A computational model is detailed, and sample profiles are presented. Observations of Lyman alpha or Balmer alpha profiles would have an important application to an understanding of the distribution of satellite particles and the nonthermal component of escaping hydrogen. The problem of satellites is seen to merit further investigation.