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G4HETCHe3.cc
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25 //
26 //
27 // by V. Lara
28 //
29 // Modified:
30 // 23.08.2010 V.Ivanchenko general cleanup, move constructor and destructor
31 // the source, use G4Pow
32 
33 #include "G4HETCHe3.hh"
34 #include "G4He3.hh"
35 
37  : G4HETCChargedFragment(G4He3::He3(), &theHe3CoulombBarrier)
38 {}
39 
41 {}
42 
44 {
45  G4double C = 0.0;
46  if (theFragZ <= 30)
47  {
48  C = 0.10;
49  }
50  else if (theFragZ <= 50)
51  {
52  C = 0.1 + -((theFragZ-50.)/20.)*0.02;
53  }
54  else if (theFragZ < 70)
55  {
56  C = 0.08 + -((theFragZ-70.)/20.)*0.02;
57  }
58  else
59  {
60  C = 0.06;
61  }
62  return 1.0 + C*(4.0/3.0);
63 }
64 
66 {
67  return -theCoulombBarrier;
68 }
69 
71 {
72  // 2s+1
73  return 2.0;
74 }
75 
76 G4double G4HETCHe3::K(const G4Fragment & aFragment)
77 {
78  // Number of protons in emitted fragment
79  G4int Pa = theZ;
80  // Number of neutrons in emitted fragment
81  G4int Na = theA - Pa;
82 
84 
85  G4int P = aFragment.GetNumberOfParticles();
86  G4int H = aFragment.GetNumberOfHoles();
87 
88  G4double result = 0.0;
89  if (P > 2)
90  {
91  result = 3.0/(P*(P-1.0)*(P-2.0)) *
92  (H*(H-1.0)*(H-2.0)*r*r*(r-1.0) +
93  H*(H-1.0)*(2.0*Na*r*(1.0-r)+Pa*r*r) +
94  H*(Pa*(Pa-1.0)*(r-1.0)+2.0*Na*Pa*r) +
95  Pa*Na*(Pa-1.0));
96 
97  result /= 3.0*r*r*(1.0 - r);
98  }
99  return std::max(0.0,result);
100 }