Physics
Scientific paper
Jan 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jqsrt..61..209p&link_type=abstract
Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 61, issue 2, pp. 209-213
Physics
1
Radiative Transfer: Stark Broadening
Scientific paper
In a recent paper Alexiou and Maron (1995) gave a closed-form formula for the collision operator for Stark broadening of isolated ion lines. In this work the authors improve on the above-mentioned work by giving simpler and more accurate expressions. As in the work of Alexiou and Maron, the new expressions involve no integrations and assume a pure dipole interaction, and a Maxwellian electron velocity distribution. As in the original work by Alexiou and Maron, these expressions are exact within the stated approximations, and apply equally to hot and cold plasmas as long as the above approximations are satisfied. Further, the authors also give an estimate of the theoretical error. The present formulas should be useful for fast data analysis and for the calculation of a large number of lines, as, for example, in opacity calculations.
Alexiou Spiros
Poquerusse A.
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