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arXiv · 1006.5164

Inelastic Na+H collision data for non-LTE applications in stellar atmospheres

P. S. Barklem·A. K. Belyaev·A. S. Dickinson·F. X. Gadea
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Abstract

Rate coefficients for inelastic Na+H collisions are calculated for all transitions between the ten levels up to and including the ionic state (ion-pair production), namely Na(3s,3p,4s,3d,4p,5s,4d,4f,5p)+H(1s) and Na+ + H-. The calculations are based on recent full quantum scattering cross-section calculations. The data are needed for non-LTE applications in cool astrophysical environments, especially cool stellar atmospheres, and are presented for a temperature range of 500-8000 K. From consideration of the sensitivity of the cross-sections to input quantum chemical data and the results of different methods for the scattering calculations, a measure of the possible uncertainties in the rate coefficients is estimated.

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P. S. Barklem, A. K. Belyaev, A. S. Dickinson, F. X. Gadea. 2010-06-26. Inelastic Na+H collision data for non-LTE applications in stellar atmospheres. https://doi.org/10.1051/0004-6361/201015152

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