Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989azh....66..749i&link_type=abstract
Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 66, July-Aug. 1989, p. 749-758. In Russian.
Astronomy and Astrophysics
Astronomy
Heavy Elements, High Temperature Plasmas, Metallic Plasmas, Plasma-Electromagnetic Interaction, Plasma-Particle Interactions, Gamma Rays, Iron, Photoabsorption, Plasma Cooling, Plasma Heating
Scientific paper
Consideration is given to the heating and cooling processes in the hot plasma of a heavy element (such as iron) in the field of ionized gamma radiation from a central source. The Fe XXVII zone in which the plasma consists of fully ionized (Fe XXVII) and of hydrogn-like (Fe XXVI) ions is examined. The heating of plasma is determined by photoabsorption of gamma rays from the central source and the cooling is determined by soft nonionizing components of free-free, recombination, and line radiation of Fe XXVII zone plasma. It is shown that, for the case of heavy-ions plasma, the role of electron collisions in cooling is not great, even near the boundary of the Fe XXVII zone, where the concentration of hydrogen-like ions is rather high. Also, the thermal balance equation for plasma is given.
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