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/* This file is part of Cloudy and is copyright (C)1978-2008 by Gary J. Ferland and
 * others.  For conditions of distribution and use see copyright notice in license.txt */
/*IonSulph compute ionization balance for sulphur */
#include "cddefines.h"
#include "dense.h"
#include "ionbal.h"

void IonSulph(void)
{
        const int NDIM = ipSULPHUR+1;

        static const double dicoef[2][NDIM] = {
                {1.62e-3,1.09e-2,3.35e-2,3.14e-2,1.27e-2,1.47e-2,1.34e-2,
                 2.38e-2,3.19e-2,7.13e-2,.08,.0796,.0134,.402,.241,0.},
                {0.,1.20e-2,6.59e-2,6.89e-2,.187,.129,1.04,1.12,1.40,1.00,
                 .555,1.63,.304,.298,.281,0.}
        };
        static const double dite[2][NDIM] = {
                {1.25e5,1.92e5,1.89e5,1.68e5,1.38e5,1.80e6,6.90e5,5.84e5,
                 5.17e5,6.66e5,6.00e5,5.09e5,2.91e5,2.41e7,2.54e7,0.},
                {0.,1.80e4,1.59e5,8.04e4,1.71e5,1.75e6,2.15e6,2.59e6,2.91e6,
                 2.32e6,2.41e6,6.37e6,1.04e6,4.67e6,5.30e6,0.}
        };
        static const double aa[NDIM] = {0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,
          0.,0.,0.,0.};
        static const double bb[NDIM] = {0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,
          0.,0.,0.,0.};
        static const double cc[NDIM] = {0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,
          0.,0.,0.,0.};
        static const double dd[NDIM] = {0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,
          0.,0.,0.,0.};
        static const double ff[NDIM] = {0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,0.,
          0.,0.,0.,0.};
        static const double ditcrt[NDIM] = {2.2e4,1.2e4,1.4e4,1.5e4,1.4e4,2.9e5,
          1.3e5,1.1e5,9.0e4,9.0e4,9.0e4,8.3e4,6.0e4,5.0e6,9.0e6,1e20};

        bool lgPrtDebug=false;
        double save_rec;

        DEBUG_ENTRY( "IonSulph()" );

        /* sulphur, atomic number 16 */
        if( !dense.lgElmtOn[ipSULPHUR] )
        {
                return;
        }

        ion_zero(ipSULPHUR);

        ion_photo(ipSULPHUR,lgPrtDebug);

        /* find collisional ionization rates */
        ion_collis(ipSULPHUR);

        /* get recombination coefficients */
        /*lint -e64 type mismatch */
        ion_recomb(false,(const double*)dicoef,(const double*)dite,ditcrt,aa,bb,cc,dd,ff,ipSULPHUR);
        /*lint +e64 type mismatch */

        /* >>chng 03 sep 29, synch up ion and co solvers.
         * the co solver will have a different S/S+ balance that
         * is strongly affected by the chemistry if we are in neutral gas
         * (hence the test that the highest stage of ionization is <=2 on 
         * physics scale)
         * in this case use co solver's S/S+ balance */
        save_rec = ionbal.RateRecomTot[ipSULPHUR][0];
        /*>>chng 04 apr 27, do not test for ionhigh being 1,
         * no reason for test on upper stage of ionization,
         * if codrive called but not evaluted then hevmol is all zero */
        /* >>chng 04 sep 10, rm check on search phase, no reason for it */
#       if 0
        if( dense.IonLow[ipSULPHUR]==0  && 
                co.hevmol[ipSP] > SMALLFLOAT && 
                ionbal.RateIonizTot[ipSULPHUR][0]*co.hevmol[ipATS]> 0. )
        {
                ionbal.RateRecomTot[ipSULPHUR][0] = 
                        ionbal.RateIonizTot[ipSULPHUR][0]*
                        co.hevmol[ipATS]/co.hevmol[ipSP];
        }
#       endif

        /* solve for ionization balance */
        /*if( nzone>700 ) lgPrtDebug = true;*/
        ion_solver(ipSULPHUR,lgPrtDebug);

        /* reset the var we just hosed */
        /* if ion just trimed down, old rec may be zero, must not use it*/
        if( save_rec > 0. )
                ionbal.RateRecomTot[ipSULPHUR][0] = save_rec;
        return;
}

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