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G4CoulombBarrier.cc
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file G4CoulombBarrier.cc
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25 //
26 //
27 // Hadronic Process: Nuclear De-excitations
28 // by V. Lara (Dec 1999)
29 //
30 // 14-11-2007 modified barrier by JMQ (test30)
31 // 15-11-2010 V.Ivanchenko use G4Pow and cleanup
32 
33 #include "G4CoulombBarrier.hh"
34 #include "G4PhysicalConstants.hh"
35 #include "G4SystemOfUnits.hh"
36 #include "G4Pow.hh"
37 #include "G4NuclearRadii.hh"
38 
40  : G4VCoulombBarrier(A, Z), g4calc(G4Pow::GetInstance())
41 {
44 }
45 
47 {}
48 
50  G4int ARes, G4int ZRes, G4double) const
51 {
52  return factor*ZRes/(G4NuclearRadii::RadiusCB(ZRes,ARes) + GetRho());
53  //return factor*ZRes/((G4NuclearRadii::RadiusCB(ZRes,ARes)
54  // + GetRho())*(1.0 + std::sqrt(U/(G4double)(2*ARes))));
55 }
56 
58 {
59  G4double res = 1.0;
60  if(GetZ() == 1) {
61  res = (aZ >= 70) ? 0.80 :
62  (((0.2357e-5*aZ) - 0.42679e-3)*aZ + 0.27035e-1)*aZ + 0.19025;
63  res += 0.06*(GetA() - 1);
64 
65  } else if(GetZ() == 2 && GetA() <= 4) {
66  res = (aZ >= 70) ? 0.98 :
67  (((0.23684e-5*aZ) - 0.42143e-3)*aZ + 0.25222e-1)*aZ + 0.46699;
68  res += 0.12*(4 - GetA());
69  }
70  return res;
71 }