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G4TritonGEMCoulombBarrier.hh
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27 // J. M. Quesada (July 2009) based on G4TritonCoulombBarrier
28 // Coded strictly according to Furihata's GEM paper
29 //
30 
31 #ifndef G4TritonGEMCoulombBarrier_h
32 #define G4TritonGEMCoulombBarrier_h 1
33 
34 #include "G4GEMCoulombBarrier.hh"
35 #include "globals.hh"
36 
38 {
39 public:
40 
43 
44 private:
46 
48  G4bool operator==(const G4TritonGEMCoulombBarrier & right) const;
49  G4bool operator!=(const G4TritonGEMCoulombBarrier & right) const;
50 
51 private:
52 
53  G4double BarrierPenetrationFactor(G4double aZ) const
54  {
55  // Data comes from
56  // Dostrovsky, Fraenkel and Friedlander
57  // Physical Review, vol 116, num. 3 1959
58  // (JMQ 190709: according to notes added on proof)
59  //dataK = {{20, 0.51}, {30, 0.60}, {40, 0.66}, {50, 0.68}};
60  //
61  G4double K = 1.0;
62  if (aZ >= 50){
63  K=0.68;
64  } else if (aZ <= 20) {
65  K=0.51;
66  } else K=0.28445+0.0115956*aZ+0.000026329*aZ*aZ-2.18583*1e-6*aZ*aZ*aZ+3.7083*1e-9*aZ*aZ*aZ*aZ;
67  return K+0.12;
68  }
69 };
70 
71 #endif