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

M. Derouich·S. Sahal-Brechot·P. S. Barklem
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Abstract

The theory of collisional depolarization of spectral lines by atomic hydrogen (Derouich et al. \cite{derouich1}) 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 $\textrm{km s}^{-1}$ are also given together with velocity exponents $λ$, if \textbf{they exist}, on the assumption that the cross section varies with velocity as $v^{-λ}$. A discussion of our results is presented.

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M. Derouich, S. Sahal-Brechot, P. S. Barklem. 2003-07-07. Collisional depolarization and transfer rates of spectral lines by atomic hydrogen. II: application to d states of neutral atoms. https://doi.org/10.1051/0004-6361%3A20031058

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