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Manuscript Title: PROFILE: a code for evaluating line profile shapes for optically thick expanding plasmas.
Authors: G.J. Tallents
Program title: PROFILE
Catalogue identifier: AARK_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 25(1982)141
Programming language: Fortran.
Computer: UNIVAC 1100/82.
Operating system: EXEC 1100.
RAM: 13K words
Word size: 36
Keywords: Radiative transfer, Fine structure, Line profile, Spectroscopy, Opacity, Astrophysics.
Classification: 1.3, 21.2.

Revision history:
Type Tit le Reference
correction 000ACORRECTION 09/01/91 See below

Nature of problem:
The shape of a spectral line profile emitted from a plasma can be a sensitive indicator of the parameters of the plasma. Traditionally, optically thin profiles have been used for plasma measurements, but optically thick profiles are now increasingly being investigated as diagnostics for dense (e.g. laser-produced plasmas) or large (e.g. the solar corona) plasmas.

Solution method:
PROFILE calculates the shape of line profiles emitted from optically thick plasmas. Processes which are modelled include the effect of bulk plasma motion and fine structure broadening, as well as absorption. The equation of radiative transfer is solved at wavelength points across the profile for input plasma parameters such as the plasma velocity variation and the emissivity and absorption coefficient as a function of distance.

Restrictions:
The code is optimised for speed by assuming analytic formulae for the local broadening profiles. However, even complicated local broadening profiles can usually be approximated to a suitable form for the code.

Unusual features:
PROFILE is written in standard FORTRAN IV.

Running time:
For execution on the UNIVAC 1100/82, from 0.5 to 20 s depending on the input data.

CORRECTION SUMMARY
Manuscript Title: Unpublished correction to PROFILE: a code for evaluating line profile shapes for optically thick expanding plasmas.
Authors: G.J. Tallents
Program title: 000ACORRECTION 09/01/91
Catalogue identifier: AARK_v1_0
Distribution format: gz
Classification: 1.3, 21.2.