The broadening of p-d and d-p transitions by collisions with neutral hydrogen atoms

Details The broadening of p-d and d-p transitions by collisions with neutral hydrogen atoms The broadening of p-d and d-p transitions by collisions with neutral hydrogen atoms

Sep 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.290..102b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 290, Issue 1, pp. 102-106.

Astronomy and Astrophysics

Astronomy

106

Atomic Data, Sun: Abundances

Scientific paper

The collisional broadening theory of Anstee & O'Mara for s-p and p-s transitions by collisions with atomic hydrogen is extended to p-d and d-p transitions. Width cross-sections for collisional broadening of atomic lines corresponding to p-d and d-p transitions by neutral hydrogen atoms are tabulated as a function of effective principal quantum numbers for the upper and lower states, for a relative velocity of 10^4ms^-1. The cross-sections vary with velocity as v^-alpha, and results for the parameter alpha are similarly tabulated. The cross-sections are tested by application to synthesis of suitable strong solar lines. The derived abundances are consistent with meteoritic values.

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