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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 */

#ifndef _HELIKE_CS_H_
#define _HELIKE_CS_H_


void HeCollid( long int nelem);

realnum HeCSInterp( long int nelem,
                                 long int ipHi,
                                 long int ipLo,
                                 long int Collider );

realnum AtomCSInterp( long int nelem,
                                   long int ipHi,
                                   long int ipLo,
                                   realnum *factor,
                                   const char **where,
                                   long int Collider );

realnum IonCSInterp( long int nelem,
                                  long int ipHi,
                                  long int ipLo,
                                  realnum *factor,
                                  const char **where,
                                  long int Collider );

/* Three different collision treatments, based on
 * Seaton 1962;
 * Pengelly and Seaton 1964; and
 * Vrinceanu and Flannery 2001.
 */

double CS_l_mixing_S62(
        long int ipISO,
        long int nelem,
        long int ipLo,
        long int ipHi,
        double temp,
        long int Collider );

double CS_l_mixing_PS64(
        long int ipISO,
        long int nelem,
        long int ipLo ,
        long int ipHi ,
        long int Collider );

double CS_l_mixing_VF01(
        long int ipISO,
        long int nelem,
        long int n,
        long int l,
        long int lp,
        long int s,
        double temp,
        long int Collider );


#endif /* _HELIKE_CS_H_ */

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