Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/models/lend/src/G4LENDElasticCrossSection.cc

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 26 #include "G4LENDElasticCrossSection.hh"
 27 #include "G4SystemOfUnits.hh"
 28 
 29 G4double G4LENDElasticCrossSection::getLENDCrossSection( G4GIDI_target* target , G4double ke , G4double temperature ) 
 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 }
 46