116 lines
4.6 KiB
C++
116 lines
4.6 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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//
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// The lust update: M.V. Kossov, CERN/ITEP(Moscow) 17-June-02
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//
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//
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// G4 Physics class: G4ChipsKaonZeroElasticXS for gamma+A cross sections
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// Created: M.V. Kossov, CERN/ITEP(Moscow), 20-Dec-03
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// The last update: M.V. Kossov, CERN/ITEP (Moscow) 15-Feb-04
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//
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// ****************************************************************************************
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// Short description: Cross-sections extracted (by W.Pokorski) from the CHIPS package for
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// K(zero)-nuclear interactions. Original author: M. Kossov
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// -------------------------------------------------------------------------------------
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//
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#include "G4ChipsKaonZeroElasticXS.hh"
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#include "G4DynamicParticle.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4KaonZero.hh"
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#include "G4KaonZeroLong.hh"
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#include "G4KaonZeroShort.hh"
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#include "G4AntiKaonZero.hh"
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#include "G4CrossSectionDataSetRegistry.hh"
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// factory
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#include "G4CrossSectionFactory.hh"
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//
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G4_DECLARE_XS_FACTORY(G4ChipsKaonZeroElasticXS);
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G4ChipsKaonZeroElasticXS::G4ChipsKaonZeroElasticXS():G4VCrossSectionDataSet(Default_Name())
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{
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lastLEN=0;// Pointer to the lastArray of LowEn CS
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lastHEN=0;// Pointer to the lastArray of HighEnCS
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lastN=0; // The last N of calculated nucleus
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lastZ=0; // The last Z of calculated nucleus
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lastP=0.; // Last used in cross section Momentum
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lastTH=0.;// Last threshold momentum
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lastCS=0.;// Last value of the Cross Section
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lastI=0; // The last position in the DAMDB
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theKMinusCS = (G4ChipsKaonMinusElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsKaonMinusElasticXS::Default_Name());;
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theKPlusCS = (G4ChipsKaonPlusElasticXS*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4ChipsKaonPlusElasticXS::Default_Name());
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}
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G4ChipsKaonZeroElasticXS::~G4ChipsKaonZeroElasticXS()
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{
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}
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void
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G4ChipsKaonZeroElasticXS::CrossSectionDescription(std::ostream& outFile) const
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{
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outFile << "G4ChipsKaonZeroElasticXS provides the elastic cross\n"
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<< "section for K0 nucleus scattering as a function of incident\n"
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<< "momentum. The cross section is calculated using M. Kossov's\n"
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<< "CHIPS parameterization of cross section data.\n";
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}
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G4bool G4ChipsKaonZeroElasticXS::IsIsoApplicable(const G4DynamicParticle*, G4int, G4int,
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const G4Element*,
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const G4Material*)
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{
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return true;
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}
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// The main member function giving the collision cross section (P is in IU, CS is in mb)
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// Make pMom in independent units ! (Now it is MeV)
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G4double G4ChipsKaonZeroElasticXS::GetIsoCrossSection(const G4DynamicParticle* Pt, G4int tgZ, G4int A,
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const G4Isotope*,
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const G4Element*,
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const G4Material*)
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{
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G4double pMom=Pt->GetTotalMomentum();
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G4int N = A - tgZ;
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return GetChipsCrossSection(pMom, tgZ, N, 311);
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}
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G4double G4ChipsKaonZeroElasticXS::GetChipsCrossSection(G4double mom, G4int Z, G4int N, G4int pdg)
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{
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return (theKMinusCS->GetChipsCrossSection(mom,Z,N,pdg)
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+theKPlusCS->GetChipsCrossSection(mom,Z,N,pdg))/2;
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}
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