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// Copyright (c) 2006 The Regents of the University of California.
// All rights reserved.
// UCRL-CODE-224807
//
// $Id: G4LLNLFission.hh 67966 2013-03-13 09:38:38Z gcosmo $
//

//
// This class is a copy of Fission.hh, made for use with Geant4.
//

  extern void genspfissevt_(G4int *isotope, G4double *time);
/*
 * This function is called to trigger a spontaneous fission.
 * Multiple neutrons and photons are generated and stored
 * in a stack along with their energies, directions and 
 * emission times.
 * The arguments of this function are
 *      isotope:        94239 for Pu-239 for instance
 *      time:           the time of the spontaneous fission
 */

  extern void genfissevt_(G4int *isotope, G4double *time, G4double *nubar, G4double *eng);
/*
 * This function is called to trigger a neutron-induced fission.
 * Multiple neutrons and photons are generated and stored
 * in a stack along with their energies, directions and 
 * emission times. In addition to the arguments above, this
 * function needs
 *      nubar:          user-specified average number of neutrons emitted 
 *                      per fission (e.g. as tabulated in the cross-section 
 *                      libraries used by the particle transport code)
 *      eng:            energy of the neutron inducing fission
 */

  extern G4int getnnu_();
/*
 * This function returns the number of neutrons emitted by the
 * fission, -1 if there is no neutron data for that isotope in 
 * the fission library.
 */

  extern G4int getpnu_();
/*
 * This function returns the number of photons emitted by the
 * fission, -1 if there is no photon data for that isotope in 
 * the fission library.
 */

  extern G4double getneng_(G4int *index);
/*
 * Given the index of the emitted neutron, this function returns
 * its energy, -1 if index isout of range.
 */

  extern G4double getnvel_(G4int *index);
/*
 * Given the index of the emitted neutron, this function returns
 * the amplitude of its velocity, -1 if index is out of range.
 */

  extern G4double getndircosu_(G4int *index);
  extern G4double getndircosv_(G4int *index);
  extern G4double getndircosw_(G4int *index);
/*
 * Given the index of the emitted neutron, this function returns
 * the direction cosines of its velocity vector on the x, y and z 
 * axes.
 */

  extern G4double getpeng_(G4int *index);
/*
 * Given the index of the emitted photon, this function returns
 * its energy, -1 if index is out of range.
 */

  extern G4double getpvel_(G4int *index);
/*
 * Given the index of the emitted photon, this function returns
 * the amplitude of its velocity, -1 if index is out of range.
 */

  extern G4double getpdircosu_(G4int *index);
  extern G4double getpdircosv_(G4int *index);
  extern G4double getpdircosw_(G4int *index);
/*
 * Given the index of the emitted photon, this function returns
 * the direction cosines of its velocity.
 */

  extern G4double getnage_(G4int *index);
/*
 * Given the index of the emitted neutron, this function returns
 * its age, -1 if index is out of range.
 * This age will be different from the time specified
 * in generateFissionEvent and generateSpontaneousFissionEvent
 * for non-prompt neutrons, i.e. delayed neutrons. 
 */

  extern G4double getpage_(G4int *index);
/*
 * Given the index of the emitted photon, this function returns
 * its age, -1 of index is out of range.
 *  This age will be different from the time specified
 * in generateFissionEvent and generateSpontaneousFissionEvent
 * for photons that are emitted by beta-decay of the fission
 * fragments.
 */

  extern void setdelay_(G4int *delay);
/*
 * This function is called to enable delayed neutrons and photons
 * Input
 *      delay:
 *              0 (default) for strictly prompt neutrons and 
 *                photons
 *              1 (n/a) for prompt neutrons, prompt and delayed 
 *                photons
 *              2 (n/a) for prompt and delayed neutrons, prompt 
 *                photons
 *              3 (n/a) for prompt and delayed neutrons, prompt 
 *                and delayed photons
 */

  extern void setcorrel_(G4int *correlation);
/*
 * This function is called to set the type of neutron photon correlation
 * Input
 *      correlation:
 *              0 (default) for no correlation between neutrons and
 *                photons
 *              1 (n/a) for number correlation between neutrons and 
 *                photons
 *              2 (n/a) for number and energy correlation between 
 *                neutrons and photons
 */

  extern void setnudist_(G4int *nudist);
/*
 * This function is called to set the data to be sampled for the neutron
 * number distributions in induced fissions
 * Input
 *      nudist:
 *               0 to use the fit to the Zucker and Holden tabulated 
 *                 P(nu) distributions as a function of energy for 
 *                 U235, U238 and Pu239. Terrell for other isotopes.
 *               1 to use fits to the Zucker and Holden tabulated 
 *                 P(nu) distribution as a function of energy for 
 *                 U238 and Pu239, and a fit to the Zucker and Holden 
 *                 data as well as the Gwin, Spencer and Ingle data 
 *                 (at thermal energies) as a function of energy for 
 *                 U235. Terrell for other isotopes.
 *               2 (default) to use the fit to the Zucker and Holden 
 *                 tabulated P(nu) distributions as a function of nubar. 
 *                 The U238 fit is used for the U232, U234, U236 and 
 *                 U238 isotopes, the U235 fit for U233 and U235, the 
 *                 Pu239 fit for Pu239 and Pu241. Terrell for other 
 *                 isotopes.
 */


  extern void setcf252_(G4int *ndist, G4int *neng);
/*
 * This function is called to set the data to be sampled for the 
 * (a) Cf252 spontaneous fission number distribution, and 
 * (b) Cf252 spontaneous fission neutron energy spectrum
 * Input
 *      ndist:
 *              0 (default) to sample the number of neutrons from the 
 *                tabulated data measured by Spencer
 *              1 to sample the number of neutrons from Boldeman's data
 *      neng:
 *              0 to sample the spontaneous fission neutron energy from 
 *                Mannhart corrected Maxwellian spectrum
 *              1 to sample the spontaneous fission neutron energy from 
 *                Madland-Nix theoretical spectrum
 *              2 to sample the spontaneous fission neutron energy from 
 *                the Froehner Watt spectrum
 */

  extern void setrngf_(G4float (*funcptr) (void));
/*
 * This function sets the random number generator to the user-defined
 * one specified in the argument. If either setrngf_ or setrngd_ are
 * not specified, the default system call srand48 will be called.
 * Input
 *      funcptr:
 *               a random number generator function that returns a
 *               variable of type G4float
 */

  extern void setrngd_(G4double (*funcptr) (void));
/*
 * This function sets the random number generator to the user-defined
 * one specified in the argument. If either setrngf_ or setrngd_ are
 * not specified, the default system call srand48 will be called.
 * Input
 *      funcptr:
 *               a random number generator function that returns a
 *               variable of type G4double
 */
// }
