Gabriele Cosmo
87 lines
4.0 KiB
C++
87 lines
4.0 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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#include "G4LENDCombinedCrossSection.hh"
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#include "G4LENDElasticCrossSection.hh"
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#include "G4LENDInelasticCrossSection.hh"
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#include "G4LENDCaptureCrossSection.hh"
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#include "G4LENDFissionCrossSection.hh"
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#include "Randomize.hh"
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G4LENDCombinedCrossSection::G4LENDCombinedCrossSection( G4ParticleDefinition* pd )
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:G4LENDCrossSection("LENDCombinedCrossSection")
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{
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proj = pd;
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elasticXS = new G4LENDElasticCrossSection( pd );
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inelasticXS = new G4LENDInelasticCrossSection( pd );
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captureXS = new G4LENDCaptureCrossSection( pd );
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fissionXS = new G4LENDFissionCrossSection( pd );
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}
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void G4LENDCombinedCrossSection::BuildPhysicsTable( const G4ParticleDefinition& pd )
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{
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elasticXS->BuildPhysicsTable( pd );
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inelasticXS->BuildPhysicsTable( pd );
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captureXS->BuildPhysicsTable( pd );
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fissionXS->BuildPhysicsTable( pd );
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create_used_target_map();
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}
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G4double G4LENDCombinedCrossSection::GetIsoCrossSection( const G4DynamicParticle* dp , G4int iZ , G4int iA ,
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const G4Isotope* isotope , const G4Element* /*elment*/ , const G4Material* material )
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{
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G4double XS = 0.0;
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XS += elasticXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
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XS += inelasticXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
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XS += captureXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
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XS += fissionXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
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//G4cout << "G4LENDCombinedCrossSection::GetIsoCrossSection " << XS/CLHEP::barn << " [barn]" << G4endl;
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return XS;
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}
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G4int G4LENDCombinedCrossSection::SelectChannel( const G4DynamicParticle* dp , G4int iZ , G4int iA ,
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const G4Isotope* isotope , const G4Element* /*elment*/ , const G4Material* material )
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{
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G4int ichannel=-1;
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G4double XSs[4];
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XSs[0] = elasticXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
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XSs[1] = XSs[0] + inelasticXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
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XSs[2] = XSs[1] + captureXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
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XSs[3] = XSs[2] + fissionXS->GetIsoCrossSection( dp, iZ, iA, isotope, NULL , material );
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G4double total = XSs[3];
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G4double random = G4UniformRand();
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for ( G4int i = 0 ; i != 4 ; i++ ) {
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if ( random*total <= XSs[i] ) {
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ichannel = i;
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break;
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}
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}
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return ichannel;
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}
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