Relativistic free-free Gaunt factor of the dense high-temperature stellar plasma. II. Carbon and oxygen plasmas

Journal Article · Sat Sep 01 04:00:00 EDT 1990 · Astrophysical Journal, Supplement Series; (USA)

DOI:https://doi.org/10.1086/191500· OSTI ID:6483073

Itoh, Naoki; Kojo, Koichi; Nakagawa, Masayuki ^[1]

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1. Sophia Univ., Tokyo (Japan) Toshiba Corp., Kawasaki (Japan)

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. 6 refs.

• OSTI ID: 6483073
• Journal Information: Astrophysical Journal, Supplement Series; (USA), Journal Name: Astrophysical Journal, Supplement Series; (USA) Vol. 74; ISSN APJSA; ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
CARBON
CORRECTIONS
CROSS SECTIONS
ELECTRON DENSITY
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
HOT PLASMA
MASSLESS PARTICLES
MECHANICS
NONMETALS
PHOTONS
PLASMA
QUANTUM MECHANICS
RELATIVISTIC RANGE
STELLAR ACTIVITY
STELLAR WINDS