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G4AlphaCoulombBarrier.cc
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27 // $Id: G4AlphaCoulombBarrier.cc 97097 2016-05-25 07:50:31Z gcosmo $
28 //
29 // Hadronic Process: Nuclear De-excitations
30 // by V. Lara (Dec 1999)
31 
32 
33 #include "G4AlphaCoulombBarrier.hh"
34 
37 
38 G4double G4AlphaCoulombBarrier::BarrierPenetrationFactor(G4int aZ) const
39 {
40  // Data comes from
41  // Dostrovsky, Fraenkel and Friedlander
42  // Physical Review, vol 116, num. 3 1959
43  //
44  // const G4int size = 5;
45  // const G4double Zlist[size] = {10.0, 20.0, 30.0, 50.0, 70.0};
46  // const G4double Kalpha[size] = {0.68, 0.82, 0.91, 0.97, 0.98};
47  return (aZ >= 70) ? 0.98 :
48  (((0.23684e-5*aZ) - 0.42143e-3)*aZ + 0.25222e-1)*aZ + 0.46699;
49 }
int G4int
Definition: G4Types.hh:78
double G4double
Definition: G4Types.hh:76