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G4LENDElasticCrossSection.cc
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27 #include "G4SystemOfUnits.hh"
28 
30 {
31  if ( target == NULL ) return 0.0;
32 // 090407
33 // return target->getElasticCrossSection( ke/MeV , temperature )*barn;
34  //return target->getElasticCrossSectionAtE( ke/MeV , temperature )*barn;
35  G4double result = target->getElasticCrossSectionAtE( ke/MeV , temperature )*barn;
36  if ( result == 0.0 && ke/eV < 1.0e-4)
37  {
38  G4double el = 1.0e-4*eV;
39  G4double eh = 2.0e-4*eV;
40  G4double xs_el = target->getElasticCrossSectionAtE( el/MeV , temperature )*barn;
41  G4double xs_eh = target->getElasticCrossSectionAtE( eh/MeV , temperature )*barn;
42  result = GetUltraLowEnergyExtrapolatedXS( el , eh , xs_el , xs_eh , ke );
43  }
44  return result;
45 }
const XML_Char * target
Definition: expat.h:268
static constexpr double MeV
Definition: G4SIunits.hh:214
G4double GetUltraLowEnergyExtrapolatedXS(G4double, G4double, G4double, G4double, G4double)
G4double getLENDCrossSection(G4GIDI_target *, G4double, G4double)
double G4double
Definition: G4Types.hh:76
static constexpr double eV
Definition: G4SIunits.hh:215
G4double G4ParticleHPJENDLHEData::G4double result
static constexpr double barn
Definition: G4SIunits.hh:105
double getElasticCrossSectionAtE(double e_in, double temperature)