Version 2.1 (June 2000)

$\bullet$ Added 5 new input parameters vturbi, emult, critd, taumax, xeemin.

$\bullet$ Added artificial broadening of absorption lines due to turbulent velocity controlled by input parameter vturbi. If vturbi is less than the local thermal ion speed, then thermal Doppler broadening is used.

$\bullet$ Changed input spectrum in default parameter file to pow. Added error check for invalid input spectrum.

$\bullet$ Fixed error which displayed incorrect value of the constant pressure switch in output files.

$\bullet$ Several minor errors have been corrected in the some of the calculations of atomic rates: types 67, 51, and 70.

$\bullet$ Added printout of all line emissivities at each radial zone (in addition to the level populations) when the write_switch parameter is set to 1. These appear in the file named xout_detal2.fits.

$\bullet$ Modified the algorithm for calculating thermal equilibrium so that for temperatures less than 3030K the iteration procedure is disabled; any radius zone where the equilibrium solver finds a temperature less than this value will not calculate thermal equlibrium.

$\bullet$ Added 2 new output fits files to the standard output. xout_lines.fits contains the luminosities of the 100 strongest emission lines, and xout_cont.fits contains the continuum luminosities without the lines added (these two files can be combined by binning the lines suitably in order to make the contents of xout_spect1.fits).

$\bullet$ Added calculation and printout of LTE level populations to the quantities in xout_detail.fits.

$\bullet$ Improved treament of energy budget, and added printout of energy budget to xout_step.log.



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