Radio recombination lines from H+ regions and cold interstellar clouds: Computation of the b n factors
Description
Title of program: GENERAL BN PROGRAM Catalogue Id: ACXI_v1_0 Nature of problem Emission lines produced by the recombination of hydrogen and hydrogenic ions are observed from many astronomical sources; maser amplification is frequently present. The recombination line spectrum depends upon the populations of the energy levels of the emitting species. The present program computes the ratio, bn, of the population of energy level n to the (known) population in thermodynamic equilibrium for given values of electron temperature and density. A background radiation field may be pre ... Versions of this program held in the CPC repository in Mendeley Data ACXI_v1_0; GENERAL BN PROGRAM; 10.1016/0010-4655(77)90025-X This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)