Relativistic Free-Free Gaunt Factor. II. (Itoh+ 1990)

Details Relativistic Free-Free Gaunt Factor. II. (Itoh+ 1990) Relativistic Free-Free Gaunt Factor. II. (Itoh+ 1990)

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ycat..20740291i&link_type=abstract

VizieR On-line Data Catalog: J/ApJS/74/291. Originally published in: 1990ApJS...74..291I

Physics

Atomic Physics

Atomic Physics, Opacities

Scientific paper

The pure Coulomb free-free Gaunt factors of the dense high-temperature carbon and oxygen plasmas are calculated by using the accurate relativistic cross section and are compared with the Gaunt factors derived by using Sommerfeld's exact nonrelativistic cross section. A wide range of electron degeneracy is accurately taken into account. Effects from resonances in the free electron density of states are not included. Dramatic deviations from the nonrelativistic results are found for high-temperature cases. Results are presented in the form of extensive tables to facilitate applications. (10 data files).

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