Geant4  10.02.p01
G4SmpSpNubarData.cc
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56 // $Id: G4SmpSpNubarData.cc 68799 2013-04-05 13:29:46Z gcosmo $
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58 
59 #include "G4fissionEvent.hh"
60 
61 #define nSPfissNubarIso 18
62 
64 
65 /*
66  Description
67  Determine average number of neutrons from spontaneous fission for
68  Th-232,
69  U-232, U-233, U-234, U-235, U-236, U-238
70  Np-237,
71  Pu-239, Pu-240, Pu-241, Pu-242
72  Am-241,
73  Cm-242, Cm-244,
74  Bk-249,
75  Cf-252
76  Based on Ensslin's data.
77  N. Ensslin, et.al., "Application Guide to Neutron Multiplicity Counting,"
78  LA-13422-M (November 1998)
79 */
80 
81 /*
82  Input
83  iso - isotope
84  Output
85  G4SmpSpNubarData - average number of neutrons
86  -1. is the isotope has
87  no nubar data
88 */
89 
90  G4int i;
91 
92  static G4int spzaid [nSPfissNubarIso] = {
93  90232, 92232, 92233, 92234, 92235,
94  92236, 92238, 93237, 94238, 94239,
95  94240, 94241, 94242, 95241, 96242,
96  96244, 97249, 98252 };
97  static G4double spnubar [nSPfissNubarIso] = {
98  2.14, 1.71, 1.76, 1.81, 1.86,
99  1.91, 2.01, 2.05, 2.21, 2.16,
100  2.156, 2.25, 2.145, 3.22, 2.54,
101  2.72, 3.40, 3.757
102  };
103 
104 // Find nubar
105  for (i=0; i<nSPfissNubarIso; i++) {
106  if (isotope == spzaid[i]) {
107  return spnubar[i];
108  }
109  }
110 // no nubar available for that isotope
111  return -1.;
112 }
G4double G4SmpSpNubarData(G4int isotope)
int G4int
Definition: G4Types.hh:78
#define nSPfissNubarIso
double G4double
Definition: G4Types.hh:76