G4TritonCoulombBarrier.cc

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// $Id: G4TritonCoulombBarrier.cc 68724 2013-04-05 09:26:32Z gcosmo $
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara (Dec 1999)


#include "G4TritonCoulombBarrier.hh"

G4TritonCoulombBarrier::G4TritonCoulombBarrier() : G4CoulombBarrier(3,1) {}
G4TritonCoulombBarrier::~G4TritonCoulombBarrier() {}

G4double G4TritonCoulombBarrier::BarrierPenetrationFactor(G4double aZ) const
{
  // Data comes from 
  // Dostrovsky, Fraenkel and Friedlander
  // Physical Review, vol 116, num. 3 1959
  // 
  // const G4int size = 5;
  // const G4double Zlist[size] = {10.0, 20.0, 30.0, 50.0, 70.0};
  // const G4double Kprot[size] = {0.42, 0.58, 0.68, 0.77, 0.80};
  // 
  // K for Triton is K for protons + 0.12
  G4double K = 1.0;
  if (aZ>=70.0) {
    K = 0.80;
  } else {
    K = (((0.2357e-5*aZ) - 0.42679e-3)*aZ + 0.27035e-1)*aZ + 0.19025;
  }
  return K+0.12;
}