Stark broadening of the lower Rydberg n_alpha, n_beta and n_gamma lines of atomic hydrogen

Details Stark broadening of the lower Rydberg n_alpha, n_beta and n_gamma lines of atomic hydrogen Stark broadening of the lower Rydberg n_alpha, n_beta and n_gamma lines of atomic hydrogen

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26as..139..377m&link_type=abstract

Astronomy and Astrophysics Supplement, v.139, p.377-385

Astronomy and Astrophysics

Astrophysics

1

Atomic Data, Line Profiles, Plasmas

Scientific paper

This paper deals with the calculation of line widths and lineshapes of the lower Rydberg lines of atomic hydrogen (n ~ 5-20) in the conditions of stellar envelopes and atmospheres - electron densities scaling from 10(9) to 10(16) cm(-3) and temperatures varying between 5000 and 40000 K. For these lines, the traditional semi-classical method breaks down, especially at low densities. Another or other theoretical approaches are needed for the determination of linewidths. An alternative tool is proposed in terms of collision rate methods. Data are provided for n_alpha , n_beta and n_gamma lines.

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