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PopRatio: A program to calculate atomic level populations in
astrophysical plasmas
Alex I. Silva &
Sueli M. Viegas
Instituto Astronmico e Geofsico -
Universidade de So Paulo
Abstract:
PopRatio is a Fortran 90 code to calculate atomic level populations
in astrophysical plasmas. The program solves the equations of
statistical equilibrium considering all possible bound-bound
processes: spontaneous, collisional or radiation induced (the
later either directly or by fluorescence). There is no limit
on the number of levels or in the number of processes that may
be taken into account. The program may find a wide range of
applicability in astronomical problems, such as interpreting
fine-structure absorption lines or collisionally
excited emission lines and also in calculating the cooling
rates due to collisional excitation.
Subject headings: atomic processes, line: formation, plasmas
Latest Version: 1.0 (2001 August 17)
Archived: 2002 February 9
Papers: Silva, A.I., Viegas, S.M., 2001, Comp. Phys. Comm., 136, 319 ;
Silva, A.I., Viegas, S.M., 2002, MNRAS, 329, 135
Language: Fortran 90
Platform: Windows, Unix
External Explanatory Page(s):
http://www.iagusp.usp.br/~alexsilv/popratio
Source Code: (latest, external)
http://www.iagusp.usp.br/~alexsilv/popratio/popratio.tar.gz
Source Code: (archived, local)
popratio.tar.gz