Opacity of a Highly Compressed Hydrogen Gas.
Abstract
The opacity of a highly compressed hydrogen gas is calculated by considering both the freefree and the houndfree transitions. The electrons are assumed to move in an average potential field of spherical symmetry. For a very dense case such that all the hydrogen atoms lose their electrons by pressure ionixation, the problem is solved by assuming that the medium consists of ions imbedded in a highly degenerate FermiDirac electron gas. The wave functions are determined by a simplified selfconsistent field calculation. For density such that only one bound level exists, the broadening of the level due to the presence of the neighboring atoms is obtained by a method similar to that used in the theory of solids. The wave functions obtained from the selfconsistent field calculation are then used for determining the opacity.
 Publication:

The Astrophysical Journal
 Pub Date:
 January 1954
 DOI:
 10.1086/145797
 Bibcode:
 1954ApJ...119...70H