G4AblaFission Class Reference

#include <G4AblaFission.hh>

Inheritance diagram for G4AblaFission:

Collaboration diagram for G4AblaFission:

Public Member Functions
	G4AblaFission ()
	~G4AblaFission ()
void	doFission (G4double &A, G4double &Z, G4double &E, G4double &A1, G4double &Z1, G4double &E1, G4double &K1, G4double &A2, G4double &Z2, G4double &E2, G4double &K2)
G4double	spdef (G4int a, G4int z, G4int optxfis)
G4double	fissility (G4int a, G4int z, G4int optxfis)
void	even_odd (G4double r_origin, G4double r_even_odd, G4int &i_out)
G4double	umass (G4double z, G4double n, G4double beta)
G4double	ecoul (G4double z1, G4double n1, G4double beta1, G4double z2, G4double n2, G4double beta2, G4double d)
void	fissionDistri (G4double &a, G4double &z, G4double &e, G4double &a1, G4double &z1, G4double &e1, G4double &v1, G4double &a2, G4double &z2, G4double &e2, G4double &v2)
void	standardRandom (G4double *rndm, G4long *seed)
G4double	haz (G4int k)
G4double	gausshaz (int k, double xmoy, double sig)
G4int	min (G4int a, G4int b)
G4double	min (G4double a, G4double b)
G4int	max (G4int a, G4int b)
G4double	max (G4double a, G4double b)
G4int	nint (G4double number)
G4int	secnds (G4int x)
G4int	mod (G4int a, G4int b)
G4double	dmod (G4double a, G4double b)
G4double	dint (G4double a)
G4int	idint (G4double a)
G4double	utilabs (G4double a)
G4double	dmin1 (G4double a, G4double b, G4double c)
Public Member Functions inherited from G4AblaFissionBase
	G4AblaFissionBase ()
virtual	~G4AblaFissionBase ()
void	setVerboseLevel (G4int level)
void	about ()
void	setAboutString (G4String anAbout)

Detailed Description

Definition at line 42 of file G4AblaFission.hh.

Constructor & Destructor Documentation

G4AblaFission::G4AblaFission

(

)

Definition at line 40 of file G4AblaFission.cc.

{
}

G4AblaFission::~G4AblaFission

(

)

Definition at line 44 of file G4AblaFission.cc.

{
}

Member Function Documentation

G4double G4AblaFission::dint

(

G4double

a

)

Definition at line 1222 of file G4AblaFission.cc.

{
  G4double value = 0.0;

  if(a < 0.0) {
    value = double(std::ceil(a));
  }
  else {
    value = double(std::floor(a));
  }

  return value;
}

G4double G4AblaFission::dmin1	(	G4double	a,
		G4double	b,
		G4double	c
	)

Definition at line 1250 of file G4AblaFission.cc.

{
  if(a < b && a < c) {
    return a;
  }
  if(b < a && b < c) {
    return b;
  }
  if(c < a && c < b) {
    return c;
  }
  return a;
}

G4double G4AblaFission::dmod	(	G4double	a,
		G4double	b
	)

Definition at line 1212 of file G4AblaFission.cc.

{
  if(b != 0) {
    return (a - (a/b)*b);
  }
  else {
    return 0.0;
  } 
}

void G4AblaFission::doFission ( G4double &  A, G4double &  Z, G4double &  E, G4double &  A1, G4double &  Z1, G4double &  E1, G4double &  K1, G4double &  A2, G4double &  Z2, G4double &  E2, G4double &  K2  )

virtual

Implements G4AblaFissionBase.

Definition at line 48 of file G4AblaFission.cc.

{
  fissionDistri(A,Z,E,A1,Z1,E1,K1,A2,Z2,E2,K2);
}

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G4double G4AblaFission::ecoul	(	G4double	z1,
		G4double	n1,
		G4double	beta1,
		G4double	z2,
		G4double	n2,
		G4double	beta2,
		G4double	d
	)

Definition at line 144 of file G4AblaFission.cc.

{
  // Coulomb potential between two nuclei
  // surfaces are in a distance of d
  // in a tip to tip configuration

  // approximate formulation
  // On input: Z1      nuclear charge of first nucleus
  //           N1      number of neutrons in first nucleus
  //           beta1   deformation of first nucleus
  //           Z2      nuclear charge of second nucleus
  //           N2      number of neutrons in second nucleus
  //           beta2   deformation of second nucleus
  //           d       distance of surfaces of the nuclei

  //      G4double Z1,N1,beta1,Z2,N2,beta2,d,ecoul;
  G4double fecoul = 0;
  G4double dtot = 0;
  const G4double r0 = 1.16;

  dtot = r0 * ( std::pow((z1+n1),1.0/3.0) * (1.0+0.6666*beta1)
        + std::pow((z2+n2),1.0/3.0) * (1.0+0.6666*beta2) ) + d;
  fecoul = z1 * z2 * 1.44 / dtot;

  return fecoul;
}

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void G4AblaFission::even_odd	(	G4double	r_origin,
		G4double	r_even_odd,
		G4int &	i_out
	)

Definition at line 55 of file G4AblaFission.cc.

{
  // Procedure to calculate I_OUT from R_IN in a way that
  // on the average a flat distribution in R_IN results in a
  // fluctuating distribution in I_OUT with an even-odd effect as
  // given by R_EVEN_ODD

  //     /* ------------------------------------------------------------ */
  //     /* EXAMPLES :                                                   */
  //     /* ------------------------------------------------------------ */
  //     /*    If R_EVEN_ODD = 0 :                                       */
  //     /*           CEIL(R_IN)  ----                                   */
  //     /*                                                              */
  //     /*              R_IN ->                                         */
  //     /*            (somewhere in between CEIL(R_IN) and FLOOR(R_IN)) */                                            */
  //     /*                                                              */
  //     /*           FLOOR(R_IN) ----       --> I_OUT                   */
  //     /* ------------------------------------------------------------ */
  //     /*    If R_EVEN_ODD > 0 :                                       */
  //     /*      The interval for the above treatment is                 */
  //     /*         larger for FLOOR(R_IN) = even and                    */
  //     /*         smaller for FLOOR(R_IN) = odd                        */
  //     /*    For R_EVEN_ODD < 0 : just opposite treatment              */
  //     /* ------------------------------------------------------------ */

  //     /* ------------------------------------------------------------ */
  //     /* On input:   R_ORIGIN    nuclear charge (real number)         */
  //     /*             R_EVEN_ODD  requested even-odd effect            */
  //     /* Intermediate quantity: R_IN = R_ORIGIN + 0.5                 */
  //     /* On output:  I_OUT       nuclear charge (integer)             */
  //     /* ------------------------------------------------------------ */

  //      G4double R_ORIGIN,R_IN,R_EVEN_ODD,R_REST,R_HELP;
  G4double r_in = 0.0, r_rest = 0.0, r_help = 0.0;
  G4double r_floor = 0.0;
  G4double r_middle = 0.0;
  //      G4int I_OUT,N_FLOOR;
  G4int n_floor = 0;

  r_in = r_origin + 0.5;
  r_floor = (float)((int)(r_in));
  if (r_even_odd < 0.001) {
    i_out = (int)(r_floor);
  } 
  else {
    r_rest = r_in - r_floor;
    r_middle = r_floor + 0.5;
    n_floor = (int)(r_floor);
    if (n_floor%2 == 0) {
      // even before modif.
      r_help = r_middle + (r_rest - 0.5) * (1.0 - r_even_odd);
    } 
    else {
      // odd before modification
      r_help = r_middle + (r_rest - 0.5) * (1.0 + r_even_odd);
    }
    i_out = (int)(r_help);
  }
}

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G4double G4AblaFission::fissility	(	G4int	a,
		G4int	z,
		G4int	optxfis
	)

void G4AblaFission::fissionDistri	(	G4double &	a,
		G4double &	z,
		G4double &	e,
		G4double &	a1,
		G4double &	z1,
		G4double &	e1,
		G4double &	v1,
		G4double &	a2,
		G4double &	z2,
		G4double &	e2,
		G4double &	v2
	)

Definition at line 171 of file G4AblaFission.cc.

{
  //  // G4cout <<"Fission: a = " << a << " z = " << z << " e = " << e << G4endl;
  //  On input: A, Z, E (mass, atomic number and exc. energy of compound nucleus
  //                     before fission)
  //  On output: Ai, Zi, Ei (mass, atomic number and exc. energy of fragment 1 and 2
  //                     after fission)

  //  Additionally calculated but not put in the parameter list:
  //  Kinetic energy of prefragments EkinR1, EkinR2

  //  Translation of SIMFIS18.PLI (KHS, 2.1.2001)

  // This program calculates isotopic distributions of fission fragments
  // with a semiempirical model                      
  // Copy from SIMFIS3, KHS, 8. February 1995        
  // Modifications made by Jose Benlliure and KHS in August 1996
  // Energy counted from lowest barrier (J. Benlliure, KHS 1997)
  // Some bugs corrected (J. Benlliure, KHS 1997)         
  // Version used for thesis S. Steinhaueser (August 1997)
  // (Curvature of LD potential increased by factor of 2!)

  // Weiter veraendert mit der Absicht, eine Version zu erhalten, die
  // derjenigen entspricht, die von J. Benlliure et al.
  // in Nucl. Phys. A 628 (1998) 458 verwendet wurde,
  // allerdings ohne volle Neutronenabdampfung.

  // The excitation energy was calculate now for each fission channel
  // separately. The dissipation from saddle to scission was taken from
  // systematics, the deformation energy at scission considers the shell
  // effects in a simplified way, and the fluctuation is included. 
  // KHS, April 1999 

  // The width in N/Z was carefully adapted to values given by Lang et al.

  // The width and eventually a shift in N/Z (polarization) follows the
  // following rules:                                        

  // The line N/Z following UCD has an angle of std::atan(Zcn/Ncn)
  // to the horizontal axis on a chart of nuclides.
  // (For 238U the angle is 32.2 deg.)

  // The following relations hold: (from Armbruster)
  // 
  // sigma(N) (A=const) = sigma(Z) (A=const)
  // sigma(A) (N=const) = sigma(Z) (N=const)
  // sigma(A) (Z=const) = sigma(N) (Z=const)
  // 
  // From this we get:
  // sigma(Z) (N=const) * N = sigma(N) (Z=const) * Z
  // sigma(A) (Z=const) = sigma(Z) (A=const) * A/Z
  // sigma(N) (Z=const) = sigma(Z) (A=const) * A/Z
  // Z*sigma(N) (Z=const) = N*sigma(Z) (N=const) = A*sigma(Z) (A=const)

  // Excitation energy now calculated above the lowest potential point
  // Inclusion of a distribution of excitation energies             

  // Several modifications, starting from SIMFIS12: KHS November 2000 
  // This version seems to work quite well for 238U.                  
  // The transition from symmetric to asymmetric fission around 226Th 
  // is reasonably well reproduced, although St. I is too strong and St. II
  // is too weak. St. I and St. II are also weakly seen for 208Pb.

  // Extensions for an event generator of fission events (21.11.2000,KHS)

  // Defalt parameters (IPARS) rather carefully adjusted to
  // pre-neutron mass distributions of Vives et al. (238U + n)
  // Die Parameter Fgamma1 und Fgamma2 sind kleiner als die resultierenden
  // Breiten der Massenverteilungen!!!  
  // Fgamma1 und Fgamma2 wurden angepa�, so da�
  // Sigma-A(ST-I) = 3.3, Sigma-A(St-II) = 5.8 (nach Vives) 

  // Parameters of the model carefully adjusted by KHS (2.2.2001) to
  // 238U + 208Pb, 1000 A MeV, Timo Enqvist et al.         

  G4double     n = 0.0;
  G4double     aheavy1 = 0.0, aheavy2 = 0.0;
  //  G4double     eheavy1 = 0.0, elight1 = 0.0, eheavy2 = 0.0, elight2 = 0.0;
  G4double     zheavy1_shell = 0.0, zheavy2_shell = 0.0;
  G4double     masscurv = 0.0;
  G4double     sasymm1 = 0.0, sasymm2 = 0.0, ssymm = 0.0, ysum = 0.0;
  G4double     ssymm_mode1 = 0.0, ssymm_mode2 = 0.0;
  // Curvature at saddle, modified by ld-potential
  G4double     wzasymm1_saddle, wzasymm2_saddle, wzsymm_saddle  = 0.0;
  G4double     wzasymm1_scission = 0.0, wzasymm2_scission = 0.0, wzsymm_scission = 0.0;
  G4double     wzasymm1 = 0.0, wzasymm2 = 0.0, wzsymm = 0.0;
  G4int  imode = 0;
  G4double     rmode = 0.0;
  G4double     z1mean = 0.0, z1width = 0.0;
  //      G4double     Z1,Z2,N1R,N2R,A1R,A2R,N1,N2,A1,A2;
  G4double     n1r = 0.0, n2r = 0.0;

  G4double     zsymm = 0.0, nsymm = 0.0, asymm = 0.0;
  G4double     n1mean = 0.0, n1width = 0.0;
  // effective shell effect at lowest barrier
  // Excitation energy with respect to ld barrier
  G4double     re1 = 0.0, re2 = 0.0, re3 = 0.0;
  G4double     n1ucd = 0.0, n2ucd = 0.0;

  // shift of most probable neutron number for given Z,
  // according to polarization
  G4int  i_help = 0;

  //   /* Parameters of the semiempirical fission model */
  G4double a_levdens = 0.0;
  //           /* level-density parameter */
  G4double a_levdens_heavy1 = 0.0, a_levdens_heavy2 = 0.0;
  const G4double r_null = 1.16;
  //          /* radius parameter */
  G4double epsilon_1_saddle = 0.0, epsilon0_1_saddle = 0.0;
  G4double epsilon_2_saddle = 0.0, epsilon0_2_saddle = 0.0, epsilon_symm_saddle = 0.0;
  G4double epsilon_1_scission = 0.0, epsilon0_1_scission = 0.0;
  G4double epsilon_2_scission = 0.0, epsilon0_2_scission = 0.0;
  G4double epsilon_symm_scission = 0.0;
  //                                   /* modified energy */
  G4double e_eff1_saddle = 0.0, e_eff2_saddle = 0.0;
  G4int icz = 0, k = 0;

  G4int i_inter = 0;
  G4double ne_min = 0;
  G4double ed1_low = 0.0, ed2_low = 0.0, ed1_high = 0.0, ed2_high = 0.0, ed1 = 0.0, ed2 = 0.0;
  G4double atot = 0.0;

  //   Input parameters:
  //OMMENT(Nuclear charge number);
  //      G4double Z;
  //OMMENT(Nuclear mass number);
  //      G4double A;
  //OMMENT(Excitation energy above fission barrier);
  //      G4double E;

  //   Model parameters:
  //OMMENT(position of heavy peak valley 1);
  const G4double nheavy1 = 82.0;
  const G4double nheavy2 = 89.0;
  //OMMENT(position of heavy peak valley 2);
  const G4double e_crit = 5; // Critical pairing energy :::PK
  //OMMENT(Shell effect for valley 1);
  //        Parameter (Delta_U2_shell = -3.2)
  //OMMENT(I: used shell effect);
  G4double delta_u1 = 0.0;
  //omment(I: used shell effect);
  G4double delta_u2 = 0.0;
  const G4double delta_u1_shell = -2.5;
  //        Parameter (Delta_U1_shell = -2)
  //OMMENT(Shell effect for valley 2);
  const G4double delta_u2_shell = -5.5;
  const G4double el = 30.0;
  //OMMENT(Curvature of asymmetric valley 1);
  const G4double cz_asymm1_shell = 0.7;
  //OMMENT(Curvature of asymmetric valley 2);
  const G4double cz_asymm2_shell = 0.08;
  //OMMENT(Factor for width of distr. valley 1);
  const G4double fwidth_asymm1 = 1.2;
  //OMMENT(Factor for width of distr. valley 2);
  const G4double fwidth_asymm2 = 1.0;
  //       Parameter (CZ_asymm2_scission = 0.12)
  //OMMENT(Factor to gamma_heavy1);
  const G4double fgamma1 = 1.0;
  //OMMENT(I: fading of shells (general));
  G4double gamma = 0.0;
  //OMMENT(I: fading of shell 1);
  G4double gamma_heavy1 = 0.0;
  //OMMENT(I: fading of shell 2);
  G4double gamma_heavy2 = 0.0;
  //OMMENT(Zero-point energy at saddle);
  const G4double e_zero_point = 0.5;
  G4int i_eva = 0; // Calculate  A = 1 or Aprime = 0 :::PK
  //OMMENT(I: friction from saddle to scission);
  G4double e_saddle_scission = 10.0;
  //OMMENT(Friction factor);
  const G4double friction_factor = 1.0;
  //OMMENT(I: Internal counter for different modes); INIT(0,0,0)
  //      Integer*4 I_MODE(3)
  //OMMENT(I: Yield of symmetric mode);
  G4double ysymm = 0.0;
  //OMMENT(I: Yield of asymmetric mode 1);
  G4double yasymm1 = 0.0;
  //OMMENT(I: Yield of asymmetric mode 2);
  G4double yasymm2 = 0.0;
  //OMMENT(I: Effective position of valley 1);
  G4double nheavy1_eff = 0.0;
  //OMMENT(I: position of heavy peak valley 1);
  G4double zheavy1 = 0.0;
  //omment(I: Effective position of valley 2);
  G4double nheavy2_eff = 0.0;
  //OMMENT(I: position of heavy peak valley 2);
  G4double zheavy2 = 0.0;
  //omment(I: Excitation energy above saddle 1);
  G4double eexc1_saddle = 0.0;
  //omment(I: Excitation energy above saddle 2);
  G4double eexc2_saddle = 0.0;
  //omment(I: Excitation energy above lowest saddle);
  G4double eexc_max = 0.0;
  //OMMENT(I: Even-odd effect in Z);
  G4double r_e_o = 0.0;
  G4double r_e_o_max = 0.0;
  G4double e_pair = 0.0;
  //OMMENT(I: Curveture of symmetric valley);
  G4double cz_symm = 0.0;
  //OMMENT(I: Curvature of mass distribution for fixed Z);
  G4double cn = 0.0;
  //OMMENT(=1: test output, =0: no test output);
  const G4int itest = 0;
  //      G4double UMASS, ECOUL, reps1, reps2, rn1_pol;
  G4double reps1 = 0.0, reps2 = 0.0, rn1_pol = 0.0;
  //      Float_t HAZ,GAUSSHAZ;
  //G4int kkk = 0;
  G4int kkk = 10;
  G4double Bsym = 0.0;
  G4double Basym_1 = 0.0;
  G4double Basym_2 = 0.0;
  //     I_MODE = 0;
  G4int count;
  const G4int maxCount = 500;

  //     /* average Z of asymmetric and symmetric components: */
  n = a - z;  /* neutron number of the fissioning nucleus */

  k = 0;
  icz = 0;
  if ( (std::pow(z,2)/a < 25.0) || (n < nheavy2) || (e > 500.0) ) {
    icz = -1;
    //          GOTO 1002;
    goto milledeux;
  }

  //    /* Polarisation assumed for standard I and standard II:
  //      Z - Zucd = cpol (for A = const);
  //      from this we get (see Armbruster)
  //      Z - Zucd =  Acn/Ncn * cpol (for N = const)                        */

  //  zheavy1_shell = ((nheavy1/n) * z) - ((a/n) * cpol1); // Simfis18  PK:::
  zheavy1_shell = ((nheavy1/n) * z) - 0.8;                 // Simfis3  PK:::
  //zheavy2_shell = ((nheavy2/n) * z) - ((a/n) * cpol2);   // Simfis18  PK:::
  zheavy2_shell = ((nheavy2/n) * z) - 0.8;                 // Simfis3  PK:::

  //  p(zheavy1_shell, zheavy2_shell);

  //  e_saddle_scission = 
  //    (-24.0 + 0.02227 * (std::pow(z,2))/(std::pow(a,0.33333)) ) * friction_factor;
  e_saddle_scission = (3.535 * std::pow(z,2)/a - 121.1) * friction_factor;  // PK:::

  //      /* Energy dissipated from saddle to scission                        */
  //      /* F. Rejmund et al., Nucl. Phys. A 678 (2000) 215, fig. 4 b        */
  //      E_saddle_scission = DMAX1(0.,E_saddle_scission);
  // Heavy Ion Induced Reactions, Schroeder W. ed., Harwood, 1986, 101
  if (e_saddle_scission < 0.0) {
    e_saddle_scission = 0.0;
  }

  //     /* Semiempirical fission model: */

  //    /* Fit to experimental result on curvature of potential at saddle */
  //           /* reference:                                              */
  //    /* IF Z**2/A < 33.15E0 THEN
  //       MassCurv = 30.5438538E0 - 4.00212049E0 * Z**2/A
  //                               + 0.11983384E0 * Z**4 / (A**2) ;
  //     ELSE
  //       MassCurv = 10.E0 ** (7.16993332E0 - 0.26602401E0 * Z**2/A
  //                               + 0.00283802E0 * Z**4 / (A**2)) ;  */
  //  /* New parametrization of T. Enqvist according to Mulgin et al. 1998 NPA 640(1998) 375 */
  if ( (std::pow(z,2))/a < 33.9186) {
    masscurv =  std::pow( 10.0,(-1.093364 + 0.082933 * (std::pow(z,2)/a)
                - 0.0002602 * (std::pow(z,4)/std::pow(a,2))) );
  } else {
    masscurv = std::pow( 10.0,(3.053536 - 0.056477 * (std::pow(z,2)/a)
                   + 0.0002454 * (std::pow(z,4)/std::pow(a,2))) );
  }

  cz_symm = (8.0/std::pow(z,2)) * masscurv;

  if(itest == 1) {
    //    // G4cout << "cz_symmetry= " << cz_symm << G4endl;
  }

  icz = 0;
  if (cz_symm < 0) {
    icz = -1;
    //          GOTO 1002;
    goto milledeux;
  }

  //  /* proton number in symmetric fission (centre) */
  zsymm  = z/2.0;
  nsymm  = n/2.0;
  asymm = nsymm + zsymm;

  zheavy1 = (cz_symm*zsymm + cz_asymm1_shell*zheavy1_shell)/(cz_symm + cz_asymm1_shell);
  zheavy2 = (cz_symm*zsymm + cz_asymm2_shell*zheavy2_shell)/(cz_symm + cz_asymm2_shell);

  //            /* position of valley due to influence of liquid-drop potential */
  nheavy1_eff = (zheavy1 + 0.8)*(n/z);
  nheavy2_eff = (zheavy2 + 0.8)*(n/z);
  aheavy1 = nheavy1_eff + zheavy1;
  aheavy2 = nheavy2_eff + zheavy2;
  // Eheavy1 = E * Aheavy1 / A
  // Eheavy2 = E * Aheavy2 / A
  // Elight1 = E * Alight1 / A
  // Elight2 = E * Alight2 / A
  a_levdens = a / 8.0;
  a_levdens_heavy1 = aheavy1 / 8.0;
  a_levdens_heavy2 = aheavy2 / 8.0;
  gamma = a_levdens / (0.4 * (std::pow(a,1.3333)) );
  gamma_heavy1 = ( a_levdens_heavy1 / (0.4 * (std::pow(aheavy1,1.3333)) ) ) * fgamma1;
  gamma_heavy2 = a_levdens_heavy2 / (0.4 * (std::pow(aheavy2,1.3333)) );

  // Up to here: Ok! Checked CS 10/10/05           

  cn = umass(zsymm,(nsymm+1.),0.0) + umass(zsymm,(nsymm-1.),0.0)
    + 1.44 * (std::pow(zsymm,2))/
    ( (std::pow(r_null,2)) * 
      ( std::pow((asymm+1.0),1.0/3.0) + std::pow((asymm-1.0),1.0/3.0) ) *
      ( std::pow((asymm+1.0),1.0/3.0) + std::pow((asymm-1.0),1.0/3.0) ) )
    - 2.0 * umass(zsymm,nsymm,0.0)
    - 1.44 * (std::pow(zsymm,2))/
    ( ( 2.0 * r_null * (std::pow(asymm,1.0/3.0)) ) * 
      ( 2.0 * r_null * (std::pow(asymm,1.0/3.0)) ) );

  // /* shell effect in valley of mode 1 */
  delta_u1 = delta_u1_shell + (std::pow((zheavy1_shell-zheavy1),2))*cz_asymm1_shell;
  // /* shell effect in valley of mode 2 */
  delta_u2 = delta_u2_shell + (std::pow((zheavy2_shell-zheavy2),2))*cz_asymm2_shell;

  Bsym = 0.0;
  Basym_1 = Bsym + std::pow((zheavy1-zsymm), 2) * cz_symm + delta_u1;
  Basym_2 = Bsym + std::pow((zheavy2-zsymm), 2) * cz_symm + delta_u2;
  if(Bsym < Basym_1 && Bsym < Basym_2) {
    // Excitation energies at the saddle point
    // without and with shell effect
    epsilon0_1_saddle = (e + e_zero_point - std::pow((zheavy1 - zsymm), 2) * cz_symm);
    epsilon0_2_saddle = (e + e_zero_point - std::pow((zheavy2 - zsymm), 2) * cz_symm);

    epsilon_1_saddle = epsilon0_1_saddle - delta_u1;
    epsilon_2_saddle = epsilon0_2_saddle - delta_u2;

    epsilon_symm_saddle = e + e_zero_point;
    eexc1_saddle = epsilon_1_saddle;
    eexc2_saddle = epsilon_2_saddle;

    // Excitation energies at the scission point
    // heavy fragment without and with shell effect
    epsilon0_1_scission = (e + e_saddle_scission - std::pow((zheavy1 - zsymm), 2) * cz_symm) * aheavy1/a;
    epsilon_1_scission = epsilon0_1_scission - delta_u1*(aheavy1/a);

    epsilon0_2_scission = (e + e_saddle_scission - std::pow((zheavy2 - zsymm), 2) * cz_symm) * aheavy2/a;
    epsilon_2_scission = epsilon0_2_scission - delta_u2*(aheavy2/a);

    epsilon_symm_scission = e + e_saddle_scission;
  } else if (Basym_1 < Bsym && Basym_1 < Basym_2) {
    // Excitation energies at the saddle point
    // without and with shell effect
    epsilon_symm_saddle = (e + e_zero_point + delta_u1 + std::pow((zheavy1-zsymm), 2) * cz_symm);
    epsilon0_2_saddle = (epsilon_symm_saddle - std::pow((zheavy2-zsymm), 2) * cz_symm);
    epsilon_2_saddle = epsilon0_2_saddle - delta_u2;
    epsilon0_1_saddle = e + e_zero_point + delta_u1;
    epsilon_1_saddle = e + e_zero_point;
    eexc1_saddle = epsilon_1_saddle;
    eexc2_saddle = epsilon_2_saddle;

    // Excitation energies at the scission point
    // heavy fragment without and with shell effect
    epsilon_symm_scission = (e + e_saddle_scission + std::pow((zheavy1-zsymm), 2) * cz_symm + delta_u1);
    epsilon0_2_scission = (epsilon_symm_scission - std::pow((zheavy2-zsymm), 2) * cz_symm) * aheavy2/a;
    epsilon_2_scission = epsilon0_2_scission - delta_u2*aheavy2/a;
    epsilon0_1_scission = (e + e_saddle_scission + delta_u1) * aheavy1/a;
    epsilon_1_scission = (e + e_saddle_scission) * aheavy1/a;
  } else if (Basym_2 < Bsym && Basym_2 < Basym_1) {
    // Excitation energies at the saddle point
    // without and with shell effect
    epsilon_symm_saddle = (e + e_zero_point + delta_u2 + std::pow((zheavy2-zsymm), 2) * cz_symm);
    epsilon0_1_saddle = (epsilon_symm_saddle - std::pow((zheavy1-zsymm), 2) * cz_symm);
    epsilon_1_saddle = epsilon0_1_saddle - delta_u1;
    epsilon0_2_saddle = e + e_zero_point + delta_u2;
    epsilon_2_saddle = e + e_zero_point;
    eexc1_saddle = epsilon_1_saddle;
    eexc2_saddle = epsilon_2_saddle;

    // Excitation energies at the scission point
    // heavy fragment without and with shell effect
    epsilon_symm_scission = (e + e_saddle_scission + std::pow((zheavy2-zsymm), 2) * cz_symm + delta_u2);
    epsilon0_1_scission = (epsilon_symm_scission - std::pow((zheavy1-zsymm), 2) * cz_symm) * aheavy1/a;
    epsilon_1_scission = epsilon0_1_scission - delta_u1*aheavy1/a;
    epsilon0_2_scission = (e + e_saddle_scission + delta_u2) * aheavy2/a;
    epsilon_2_scission = (e + e_saddle_scission) * aheavy2/a;

  } else {
    // G4cout <<"G4AblaFission: " << G4endl;
  }
  if(epsilon_1_saddle < 0.0) epsilon_1_saddle = 0.0;
  if(epsilon_2_saddle < 0.0) epsilon_2_saddle = 0.0;
  if(epsilon0_1_saddle < 0.0) epsilon0_1_saddle = 0.0;
  if(epsilon0_2_saddle < 0.0) epsilon0_2_saddle = 0.0;
  if(epsilon_symm_saddle < 0.0) epsilon_symm_saddle = 0.0;

  if(epsilon_1_scission < 0.0) epsilon_1_scission = 0.0;
  if(epsilon_2_scission < 0.0) epsilon_2_scission = 0.0;
  if(epsilon0_1_scission < 0.0) epsilon0_1_scission = 0.0;
  if(epsilon0_2_scission < 0.0) epsilon0_2_scission = 0.0;
  if(epsilon_symm_scission < 0.0) epsilon_symm_scission = 0.0;

  if(itest == 1) {
    // G4cout <<"E, E1, E2, Es" << e << epsilon_1_saddle << epsilon_2_saddle << epsilon_symm_saddle << G4endl;
  }

  e_eff1_saddle = epsilon0_1_saddle - delta_u1 * (std::exp((-epsilon_1_saddle*gamma)));
   
  if (e_eff1_saddle > 0.0) {
    wzasymm1_saddle = std::sqrt( (0.5) * 
                 (std::sqrt(1.0/a_levdens*e_eff1_saddle)) /
                 (cz_asymm1_shell * std::exp((-epsilon_1_saddle*gamma)) + cz_symm) );
  } else {
    wzasymm1_saddle = 1.0;
  }

  e_eff2_saddle = epsilon0_2_saddle - delta_u2 * std::exp((-epsilon_2_saddle*gamma));
  if (e_eff2_saddle > 0.0) {
    wzasymm2_saddle = std::sqrt( (0.5 * 
                  (std::sqrt(1.0/a_levdens*e_eff2_saddle)) /
                  (cz_asymm2_shell * std::exp((-epsilon_2_saddle*gamma)) + cz_symm) ) );
  } else {
    wzasymm2_saddle = 1.0;
  }

  if(e - e_zero_point > 0.0) {
    wzsymm_saddle = std::sqrt( (0.5 * 
                (std::sqrt(1.0/a_levdens*(e+epsilon_symm_saddle))) / cz_symm ) );
  } else {
    wzsymm_saddle = 1.0;
  }

//   if (itest == 1) {
//     // G4cout << "wz1(saddle) = " << wzasymm1_saddle << G4endl;
//     // G4cout << "wz2(saddle) = " << wzasymm2_saddle << G4endl;
//     // G4cout << "wzsymm(saddle) = " << wzsymm_saddle << G4endl;
//   }
     
  //     /* Calculate widhts at the scission point: */
  //     /* fits of ref. Beizin 1991 (Plots brought to GSI by Sergei Zhdanov) */

  wzsymm_scission = wzsymm_saddle;

  if (e_saddle_scission == 0.0) {
    wzasymm1_scission = wzasymm1_saddle;
    wzasymm2_scission = wzasymm2_saddle;
  } else {
    if (nheavy1_eff > 75.0) {
      wzasymm1_scission = (std::sqrt(21.0)) * z/a;
      double RR = (70.0-28.0)/3.0*(z*z/a-35.0)+28.0;
      if(RR > 0.0) {
    wzasymm2_scission = std::sqrt(RR)*(z/a);
      } else {
    wzasymm2_scission = 0.0;
      }
    } else {
      wzasymm1_scission = wzasymm1_saddle;
      wzasymm2_scission = wzasymm2_saddle;
    }
  }

  wzasymm1_scission = max(wzasymm1_scission,wzasymm1_saddle);
  wzasymm2_scission = max(wzasymm2_scission,wzasymm2_saddle);

  wzasymm1 = wzasymm1_scission * fwidth_asymm1;
  wzasymm2 = wzasymm2_scission * fwidth_asymm2;
  wzsymm = wzsymm_scission;

//   /*      if (ITEST == 1) {
//    // G4cout << "WZ1(scission) = " << WZasymm1_scission << G4endl;
//    // G4cout << "WZ2(scission) = " << WZasymm2_scission << G4endl;
//    // G4cout << "WZsymm(scission) = " << WZsymm_scission << G4endl;
//    }
//    if (ITEST == 1) {
//    // G4cout << "WZ1(scission) final= " << WZasymm1 << G4endl;
//    // G4cout << "WZ2(scission) final= " << WZasymm2 << G4endl;
//    // G4cout << "WZsymm(scission) final= " << WZsymm << G4endl;
//    } */
      

  //  // G4cout <<"al, e, es, cn " << a_levdens << e << e_saddle_scission << cn << G4endl;

  //   if (itest == 1) {
  //     // G4cout << "wasymm = " << wzsymm << G4endl;
  //     // G4cout << "waheavy1 = " << waheavy1 << G4endl;
  //     // G4cout << "waheavy2 = " << waheavy2 << G4endl;
  //   }
            
  // sig_0 = quantum fluctuation = 0.45 z units for A=cte
  //                               0.45*2.58 = 1.16 n units for Z=cte
  //                     sig_0^2 = 1.16*2 = 1.35    n units for Z=cte
  n1width = std::sqrt(0.5 * std::sqrt(1.0/a_levdens*(e + e_saddle_scission)) / cn + 1.35);
  if ( (epsilon0_1_saddle - delta_u1*std::exp((-epsilon_1_saddle*gamma_heavy1))) < 0.0) {
    sasymm1 = -10.0;
  } else {
    sasymm1 = 2.0 * std::sqrt( a_levdens * (epsilon0_1_saddle - 
                        delta_u1*(std::exp((-epsilon_1_saddle*gamma_heavy1))) ) );
  }

  if ( (epsilon0_2_saddle - delta_u2*std::exp((-epsilon_2_saddle*gamma_heavy2))) < 0.0) {
    sasymm2 = -10.0;
  } else {
    sasymm2 = 2.0 * std::sqrt( a_levdens * (epsilon0_2_saddle - 
                        delta_u2*(std::exp((-epsilon_2_saddle*gamma_heavy2))) ) );
  }
              
  if (epsilon_symm_saddle > 0.0) {
    ssymm = 2.0 * std::sqrt( a_levdens*(epsilon_symm_saddle) );
  } else {
    ssymm = -10.0;
  }
      
  if (ssymm > -10.0) {
    ysymm = 1.0;
    if (epsilon0_1_saddle < 0.0) { //  /* low energy */
      yasymm1 = std::exp((sasymm1-ssymm)) * wzasymm1_saddle / wzsymm_saddle * 2.0;
      //           /* factor of 2 for symmetry classes */
    } else { //        /* high energy */
      ssymm_mode1 = 2.0 * std::sqrt( a_levdens*(epsilon0_1_saddle) );
      yasymm1 = ( std::exp((sasymm1-ssymm)) - std::exp((ssymm_mode1 - ssymm)) )  
    * wzasymm1_saddle / wzsymm_saddle * 2.0;
    }

    if (epsilon0_2_saddle < 0.0) { //  /* low energy */
      yasymm2 = std::exp((sasymm2-ssymm)) * wzasymm2_saddle / wzsymm_saddle * 2.0;
      //           /* factor of 2 for symmetry classes */
    } else { //        /* high energy */
      ssymm_mode2 = 2.0 * std::sqrt( a_levdens*(epsilon0_2_saddle) );
      yasymm2 = ( std::exp((sasymm2-ssymm)) - std::exp((ssymm_mode2 - ssymm)) )  
    * wzasymm2_saddle / wzsymm_saddle * 2.0;
    }       
    //                            /* difference in the exponent in order */
    //                            /* to avoid numerical overflow         */
   } 
  else {
    if ( (sasymm1 > -10.0) && (sasymm2 > -10.0) ) {
      ysymm = 0.0;
      yasymm1 = std::exp(sasymm1) * wzasymm1_saddle * 2.0;
      yasymm2 = std::exp(sasymm2) * wzasymm2_saddle * 2.0;
    }
  }

  //  /* normalize */
  ysum = ysymm + yasymm1 + yasymm2;
  if (ysum > 0.0) {
    ysymm = ysymm / ysum;
    yasymm1 = yasymm1 / ysum;
    yasymm2 = yasymm2 / ysum;
  } else {
    ysymm = 0.0;
    yasymm1 = 0.0;
    yasymm2 = 0.0;
    //        /* search minimum threshold and attribute all events to this mode */
    if ( (epsilon_symm_saddle < epsilon_1_saddle) && (epsilon_symm_saddle < epsilon_2_saddle) ) {
      ysymm = 1.0;
    } else {
      if (epsilon_1_saddle < epsilon_2_saddle) {
    yasymm1 = 1.0;
      } else {
    yasymm2 = 1.0;
      }
    }
  }

//   if (itest == 1) {
//     // G4cout << "ysymm normalized= " << ysymm  << G4endl;
//     // G4cout << "yasymm1 normalized= " << yasymm1  << G4endl;
//     // G4cout << "yasymm2 normalized= " << yasymm2  << G4endl;
//   }
      
  //      /* even-odd effect */
  //      /* simple parametrization KHS, Nov. 2000. From Rejmund et al. */
  eexc_max = max(eexc1_saddle, eexc2_saddle);
  eexc_max = max(eexc_max, e);
  //  // G4cout << "mod(z, 2)" << iz%2 << G4endl;
  if ((G4int)(z) % 2 == 0) {
    r_e_o_max = 0.3 * (1.0 - 0.2 * (std::pow(z, 2)/a - std::pow(92.0, 2)/238.0));
    e_pair = 2.0 * 12.0 / std::sqrt(a);
    if(eexc_max > (e_crit + e_pair)) {
      r_e_o = 0.0;
    } else {
      if(eexc_max < e_pair) {
    r_e_o = r_e_o_max;
      } else {
    r_e_o = std::pow((eexc_max - e_crit - e_pair)/e_crit, 2) * r_e_o_max;
      }
    }
  } else {
    r_e_o = 0.0;
  }

  // // G4cout <<"rmax " << r_e_o_max << G4endl;
  // if(r_e_o > 0.0) // G4cout <<"e_crit, r_e_o" << e_crit << r_e_o << G4endl;
  //      $LOOP;    /* event loop */
  //     I_COUNT = I_COUNT + 1;

  /* random decision: symmetric or asymmetric */
  /* IMODE = 3 means asymmetric fission, mode 1,
     IMODE = 2 means asymmetric fission, mode 2,
     IMODE = 1 means symmetric  */
  //  RMODE = dble(HAZ(k));
  //      rmode = rnd.rndm();  
//   // Safety check added to make sure we always select well defined
//   // fission mode.
    rmode = haz(k);
    // Cast for test CS 11/10/05
    //      RMODE = 0.54;    
    //  rmode = 0.54;
    if (rmode < ysymm) {
      imode = 1;
    } else if (rmode < (ysymm + yasymm1)) {
      imode = 2;
    } else {
      imode = 3;
    }
    //     /* determine parameters of the Z distribution */
    // force imode (for testing, PK)
    // imode = 3;
    
    if (imode == 1) {
      z1mean = zsymm;
      z1width = wzsymm;
    } else if (imode == 2) {
      z1mean = zheavy1;
      z1width = wzasymm1;
    } else if (imode == 3) {
      z1mean = zheavy2;
      z1width = wzasymm2;
    }

    if (itest == 1) {
      // G4cout << "nbre aleatoire tire " << rmode << G4endl;
      // G4cout << "fission mode " << imode << G4endl;
      // G4cout << "z1mean= " << z1mean << G4endl;
      // G4cout << "z1width= " << z1width << G4endl;
    }
              
    //     /* random decision: Z1 and Z2 at scission: */
    z1 = 1.0;
    z2 = 1.0;

    count = 0;
    while  ( (z1<5.0) || (z2<5.0) ) { /* Loop checking, 28.10.2015, D.Mancusi */
      //         Z1 = dble(GAUSSHAZ(K,sngl(Z1mean),sngl(Z1width)));
      //     z1 = rnd.gaus(z1mean,z1width);
      //      z1 = 48.26; // gausshaz(k, z1mean, z1width);
      z1 = gausshaz(k, z1mean, z1width);
      even_odd(z1, r_e_o, i_help);
      z1 = double(i_help);
      z2 = z - z1;
      if(++count>maxCount)
        break;
    }

    if (itest == 1) {
      // G4cout << "ff charge sample " << G4endl;
      // G4cout << "z1 =  " << z1 << G4endl;
      // G4cout << "z2 = " << z2 << G4endl;
    }

//   //     CALL EVEN_ODD(Z1,R_E_O,I_HELP);
//   //         /* Integer proton number with even-odd effect */
//   //     Z1 = REAL(I_HELP)
//   //      /* Z1 = INT(Z1+0.5E0); */
//   z2 = z - z1;

    //     /* average N of both fragments: */
    if (imode == 1) {
      n1ucd = z1 * n/z;
      n2ucd = z2 * n/z;
      re1 = umass(z1,n1ucd,0.6) + umass(z2,n2ucd,0.6) + ecoul(z1,n1ucd,0.6,z2,n2ucd,0.6,2.0); // umass == massdef
      re2 = umass(z1,n1ucd+1.,0.6) + umass(z2,n2ucd-1.,0.6) + ecoul(z1,n1ucd+1.,0.6,z2,n2ucd-1.,0.6,2.0);
      re3 = umass(z1,n1ucd+2.,0.6) + umass(z2,n2ucd-2.,0.6) + ecoul(z1,n1ucd+2.,0.6,z2,n2ucd-2.,0.6,2.0);
      reps2 = (re1-2.0*re2+re3) / 2.0;
      reps1 = re2 - re1 - reps2;
      rn1_pol = - reps1 / (2.0 * reps2);
      n1mean = n1ucd + rn1_pol;
    } else {
      n1mean = (z1 + 0.5) * n/z;
    }
      
// n1mean nsymm + (z1 - zsymm) * 1.6 from 238 U(nth, f)
// n1width = 0.9 + E * 0.002 KHS

// random decision: N1R and N2R at scission, before evaporation
    n1r = 1.0;
    n2r = 1.0;
    count = 0;
    while (n1r < 5 || n2r < 5) { /* Loop checking, 28.10.2015, D.Mancusi */
      //      n1r = 76.93; gausshaz(kkk,n1mean,n1width);
      n1r = gausshaz(kkk,n1mean,n1width);
      // modification to have n1r as integer, and n=n1r+n2r rigorously a.b. 19/4/2001
      i_inter = int(n1r + 0.5);
      n1r = double(i_inter);
      n2r = n - n1r;
      if(++count>maxCount)
        break;
    }

    // neutron evaporation from fragments
    if (i_eva > 0) {
      // treatment sz
      ne_min = 0.095e0 * a - 20.4e0;                                  
      if (ne_min < 0) ne_min = 0.0;                                 
      ne_min = ne_min + e / 8.e0; // 1 neutron per 8 mev */           
    }

    // excitation energy due to deformation                                 

    a1 = z1 + n1r;         // mass of first fragment */        
    a2 = z2 + n2r;      // mass of second fragment */        
    if (a1 < 80) {
      ed1_low = 0.0;
    } else if (a1 >= 80 && a1 < 110) {
      ed1_low = (a1-80.)*20./30.;
    } else if (a1 >= 110 && a1 < 130) {
      ed1_low = -(a1-110.)*20./20. + 20.;
    } else if (a1 >= 130) {
      ed1_low = (a1-130.)*20./30.;
    }
    
    if (a2 < 80) {
      ed2_low = 0.0;
    } else if (a2 >= 80 && a2 < 110) {
      ed2_low = (a2-80.)*20./30.;
    } else if (a2 >= 110 && a2 < 130) {
      ed2_low = -(a2-110.)*20./20. + 20.;
    } else if (a2 >= 130) {
      ed2_low = (a2-130.)*20./30.;
    }

    ed1_high = 20.0*a1/(a1+a2);
    ed2_high = 20.0 - ed1_high;
    ed1 = ed1_low*std::exp(-e/el) + ed1_high*(1-std::exp(-e/el));
    ed2 = ed2_low*std::exp(-e/el) + ed2_high*(1-std::exp(-e/el));

    //  write(6,101)e,a1,a2,ed1,ed2,ed1+ed2
    //  write(6,102)ed1_low,ed1_high,ed2_low,ed2_high
    e1 = e*a1/(a1+a2) + ed1;
    e2 = e - e*a1/(a1+a2) + ed2;
    atot = a1+a2;
    if (atot > a+1) {
      // write(6,*)'a,,a1,a2,atot',a,a1,a2,atot
      // write(6,*)'n,n1r,n2r',n,n1r,n2r
      // write(6,*)'z,z1,z2',z,z1,z2
    }

 milledeux:       
    // only symmetric fission
    // Symmetric fission: Ok! Checked CS 10/10/05
    if ( (icz == -1) || (a1 < 0.0) || (a2 < 0.0) ) {
      //           IF (z.eq.92) THEN
      //              write(6,*)'symmetric fission'
      //              write(6,*)'Z,A,E,A1,A2,icz,Atot',Z,A,E,A1,A2,icz,Atot
      //           END IF

      if (itest == 1) {
    // G4cout << "milledeux: liquid-drop option "  << G4endl;
      }

      n = a-z;
      //  proton number in symmetric fission (centre) *
      zsymm  = z / 2.0;
      nsymm  = n / 2.0;
      asymm = nsymm + zsymm;

      a_levdens = a / 8.0;

      masscurv = 2.0;
      cz_symm = 8.0 / std::pow(z,2) * masscurv;

      wzsymm = std::sqrt( (0.5 * std::sqrt(1.0/a_levdens*e) / cz_symm) ) ;

      if (itest == 1) {
    // G4cout << " symmetric high energy fission " << G4endl;
    // G4cout << "wzsymm " << wzsymm << G4endl;
      }

      z1mean = zsymm;
      z1width = wzsymm;

      // random decision: Z1 and Z2 at scission: */
      z1 = 1.0;
      z2 = 1.0;
      count = 0;
      while  ( (z1 < 5.0) || (z2 < 5.0) ) { /* Loop checking, 28.10.2015, D.Mancusi */
    //           z1 = dble(gausshaz(kkk,sngl(z1mean),sngl(z1width)));
    //     z1 = rnd.gaus(z1mean,z1width);
    //  z1 = 24.8205585; //gausshaz(kkk, z1mean, z1width);
    z1 = gausshaz(kkk, z1mean, z1width);
    z2 = z - z1;
      if(++count>maxCount)
        break;
      }

      if (itest == 1) {
    // G4cout << " z1 " << z1 << G4endl;
    // G4cout << " z2 " << z2 << G4endl;
      }
      if (itest == 1) {
    // G4cout << " zsymm " << zsymm << G4endl;
    // G4cout << " nsymm " << nsymm << G4endl;
    // G4cout << " asymm " << asymm << G4endl;
      }

      cn = umass(zsymm, nsymm+1.0, 0.0) + umass(zsymm, nsymm-1.0, 0.0)
    + 1.44 * std::pow(zsymm, 2)/
    (std::pow(r_null, 2) * std::pow(std::pow(asymm+1.0, 1.0/3.0) + std::pow(asymm-1.0, 1.0/3.0), 2))
    - 2.0 * umass(zsymm, nsymm, 0.0) - 1.44 * std::pow(zsymm, 2) /
    std::pow(r_null * 2.0 *std::pow(asymm, 1.0/3.0), 2);
      //      This is an approximation! Coulomb energy is neglected.

      n1width = std::sqrt( (0.5 * std::sqrt(1.0/a_levdens*e) / cn) + 1.35);
      if (itest == 1) {
    // G4cout << " cn " << cn << G4endl;
    // G4cout << " n1width " << n1width << G4endl;
      }
    
    //     /* average N of both fragments: */
      n1ucd = z1 * n/z;
      n2ucd = z2 * n/z;
      re1 = umass(z1,n1ucd,   0.6) + umass(z2,n2ucd,   0.6) + ecoul(z1,n1ucd,   0.6,z2,n2ucd,   0.6,2.0);
      re2 = umass(z1,n1ucd+1.,0.6) + umass(z2,n2ucd-1.,0.6) + ecoul(z1,n1ucd+1.,0.6,z2,n2ucd-1.,0.6,2.0);
      re3 = umass(z1,n1ucd+2.,0.6) + umass(z2,n2ucd-2.,0.6) + ecoul(z1,n1ucd+2.,0.6,z2,n2ucd-2.,0.6,2.0);
      reps2 = (re1-2.0*re2+re3) / 2.0;
      reps1 = re2 - re1 - reps2;
      rn1_pol = - reps1 / (2.0 * reps2);
      n1mean = n1ucd + rn1_pol;

      // random decision: N1R and N2R at scission, before evaporation: */
      //       N1R = dfloat(NINT(GAUSSHAZ(KKK,sngl(N1mean),sngl(N1width))));
      //      n1r = (float)( (int)(rnd.gaus(n1mean,n1width)) );
      //      n1r = 34.0; //(float)( (int)(gausshaz(k, n1mean,n1width)) );
      n1r = (float)( (int)(gausshaz(k, n1mean,n1width)) );
      n2r = n - n1r;
      // Mass of first and second fragment */
      a1 = z1 + n1r;
      a2 = z2 + n2r;

      e1 = e*a1/(a1+a2);
      e2 = e - e*a1/(a1+a2);
    }
    v1 = 0.0; // These are not calculated in SimFis3.
    v2 = 0.0; 
    if (itest == 1) {
      // G4cout << " n1r " << n1r << G4endl;
      // G4cout << " n2r " << n2r << G4endl;
    }

    if (itest == 1) {
      // G4cout << " a1 " << a1 << G4endl;
      // G4cout << " z1 " << z1 << G4endl;
      // G4cout << " a2 " << a2 << G4endl;
      // G4cout << " z2 " << z2 << G4endl;
      // G4cout << " e1 " << e1 << G4endl;
      // G4cout << " e2 " << e << G4endl;
    }
}

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G4double G4AblaFission::gausshaz	(	int	k,
		double	xmoy,
		double	sig
	)

Definition at line 1086 of file G4AblaFission.cc.

{
  // Gaussian random numbers:

  //   1005       C*** TIRAGE ALEATOIRE DANS UNE GAUSSIENNE DE LARGEUR SIG ET MOYENNE XMOY
  static G4ThreadLocal G4int  iset = 0;
  static G4ThreadLocal G4double v1,v2,r,fac,gset,fgausshaz;

  if(iset == 0) { //then                                              
    G4int count = 0, maxCount = 500;
    do {
      v1 = 2.0*haz(k) - 1.0;
      v2 = 2.0*haz(k) - 1.0;
      r = std::pow(v1,2) + std::pow(v2,2);
      if(++count>maxCount)
        break;
    } while(r >= 1); /* Loop checking, 28.10.2015, D.Mancusi */

    fac = std::sqrt(-2.*std::log(r)/r);
    gset = v1*fac;
    fgausshaz = v2*fac*sig+xmoy;
    iset = 1;
  }
  else {
    fgausshaz=gset*sig+xmoy;
    iset=0;
  }
  return fgausshaz;                                                         
}

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G4double G4AblaFission::haz

(

G4int

k

)

Definition at line 1031 of file G4AblaFission.cc.

{
  const G4int pSize = 110;
  static G4ThreadLocal G4double p[pSize];
  static G4ThreadLocal G4long ix = 0, i = 0;
  static G4ThreadLocal G4double x = 0.0, y = 0.0, a = 0.0, fhaz = 0.0;
  //  k =< -1 on initialise                                        
  //  k = -1 c'est reproductible                                   
  //  k < -1 || k > -1 ce n'est pas reproductible

  // Zero is invalid random seed. Set proper value from our random seed collection:
  if(ix == 0) {
    //    ix = hazard->ial;
  }

  if (k <= -1) { //then                                             
    if(k == -1) { //then                                            
      ix = 0;
    }
    else {
      x = 0.0;
      y = secnds(int(x));
      ix = int(y * 100 + 43543000);
      if(mod(ix,2) == 0) {
    ix = ix + 1;
      }
    }

    // Here we are using random number generator copied from INCL code
    // instead of the CERNLIB one! This causes difficulties for
    // automatic testing since the random number generators, and thus
    // the behavior of the routines in C++ and FORTRAN versions is no
    // longer exactly the same!
    x = G4AblaRandom::flat();
    //    standardRandom(&x, &ix);
    for(G4int iRandom = 0; iRandom < pSize; iRandom++) { //do i=1,110                                                 
      p[iRandom] = G4AblaRandom::flat();
      //      standardRandom(&(p[i]), &ix);
    }
    a = G4AblaRandom::flat();
    //standardRandom(&a, &ix);
    k = 0;
  }

  i = nint(100*a)+1;
  fhaz = p[i];
  a = G4AblaRandom::flat();
  //  standardRandom(&a, &ix);
  p[i] = a;

  //  hazard->ial = ix;
  //  haz=0.4;
  return fhaz;
}

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G4int G4AblaFission::idint

(

G4double

a

)

Definition at line 1236 of file G4AblaFission.cc.

{
  G4int value = 0;

  if(a < 0) {
    value = int(std::ceil(a));
  }
  else {
    value = int(std::floor(a));
  }

  return value;
}

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G4int G4AblaFission::max	(	G4int	a,
		G4int	b
	)

Definition at line 1148 of file G4AblaFission.cc.

{
  if(a > b) {
    return a;
  }
  else {
    return b;
  }
}

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G4double G4AblaFission::max	(	G4double	a,
		G4double	b
	)

Definition at line 1138 of file G4AblaFission.cc.

{
  if(a > b) {
    return a;
  }
  else {
    return b;
  }
}

G4int G4AblaFission::min	(	G4int	a,
		G4int	b
	)

Definition at line 1128 of file G4AblaFission.cc.

{
  if(a < b) {
    return a;
  }
  else {
    return b;
  }
}

G4double G4AblaFission::min	(	G4double	a,
		G4double	b
	)

Definition at line 1118 of file G4AblaFission.cc.

{
  if(a < b) {
    return a;
  }
  else {
    return b;
  }
}

G4int G4AblaFission::mod	(	G4int	a,
		G4int	b
	)

Definition at line 1202 of file G4AblaFission.cc.

{
  if(b != 0) {
    return (a - (a/b)*b);
  }
  else {
    return 0;
  } 
}

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G4int G4AblaFission::nint

(

G4double

number

)

Definition at line 1158 of file G4AblaFission.cc.

{
  G4double intpart = 0.0;
  G4double fractpart = 0.0;
  fractpart = std::modf(number, &intpart);
  if(number == 0) {
    return 0;
  }
  if(number > 0) {
    if(fractpart < 0.5) {
      return int(std::floor(number));
    }
    else {
      return int(std::ceil(number));
    }
  }
  if(number < 0) {
    if(fractpart < -0.5) {
      return int(std::floor(number));
    }
    else {
      return int(std::ceil(number));
    }
  }

  return int(std::floor(number));
}

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G4int G4AblaFission::secnds

(

G4int

x

)

Definition at line 1186 of file G4AblaFission.cc.

{
  time_t mytime;
  tm *mylocaltime;

  time(&mytime);
  mylocaltime = localtime(&mytime);

  if(x == 0) {
    return(mylocaltime->tm_hour*60*60 + mylocaltime->tm_min*60 + mylocaltime->tm_sec);
  }
  else {
    return(mytime - x);
  }
}

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G4double G4AblaFission::spdef	(	G4int	a,
		G4int	z,
		G4int	optxfis
	)

void G4AblaFission::standardRandom	(	G4double *	rndm,
		G4long *	seed
	)

G4double G4AblaFission::umass	(	G4double	z,
		G4double	n,
		G4double	beta
	)

Definition at line 115 of file G4AblaFission.cc.

{
  // liquid-drop mass, Myers & Swiatecki, Lysekil, 1967
  // pure liquid drop, without pairing and shell effects

  // On input:    Z     nuclear charge of nucleus
  //              N     number of neutrons in nucleus
  //              beta  deformation of nucleus
  // On output:   binding energy of nucleus

  G4double a = 0.0, fumass = 0.0;
  G4double alpha = 0.0;
  G4double xcom = 0.0, xvs = 0.0, xe = 0.0;
  const G4double pi = 3.1416;

  a = n + z;
  alpha = ( std::sqrt(5.0/(4.0*pi)) ) * beta;
  
  xcom = 1.0 - 1.7826 * ((a - 2.0*z)/a)*((a - 2.0*z)/a);
  // factor for asymmetry dependence of surface and volume term
  xvs = - xcom * ( 15.4941 * a - 
           17.9439 * std::pow(a,2.0/3.0) * (1.0+0.4*alpha*alpha) );
  // sum of volume and surface energy
  xe = z*z * (0.7053/(std::pow(a,1.0/3.0)) * (1.0-0.2*alpha*alpha) - 1.1529/a);
  fumass = xvs + xe;
  
  return fumass;
}

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G4double G4AblaFission::utilabs

(

G4double

a

)

Definition at line 1264 of file G4AblaFission.cc.

{
  if(a > 0) {
    return a;
  }
  if(a < 0) {
    return (-1*a);
  }
  if(a == 0) {
    return a;
  }

  return a;
}

---

The documentation for this class was generated from the following files:

• geant4.10.03.p01/source/processes/hadronic/models/abla/include/G4AblaFission.hh
• geant4.10.03.p01/source/processes/hadronic/models/abla/src/G4AblaFission.cc