Collisional depolarization and transfer rates of spectral lines by atomic hydrogen II. Application to d states of neutral atoms

Almunsif Al-Darwish, S. Sahal-Bréchot, P. S. Barklem

Research output: Contribution to journalJournal articlepeer-review

19 Scopus citations

Abstract

The theory of collisional depolarization of spectral lines by atomic hydrogen (Derouich et al. 2003) is extended to d (l = 2) atomic levels. Depolarization rates, polarization and population transfer rates are calculated and results are given as a function of the temperature. Cross sections as a function of the effective quantum number for a relative velocity of 10 km s-1 are also given together with velocity exponents λ, if they exist, with the assumption that the cross section varies with velocity as v. A discussion of our results is presented.

Original languageEnglish
Pages (from-to)369-373
Number of pages5
JournalAstronomy and Astrophysics
Volume409
Issue number1
DOIs
StatePublished - Oct 2003
Externally publishedYes

Keywords

  • Atomic processes
  • Line: formation
  • Polarization
  • Sun: atmosphere

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