Gabriele Cosmo
116 lines
5.1 KiB
Plaintext
116 lines
5.1 KiB
Plaintext
//
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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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// $Id: G4MuPairProduction52.icc,v 1.2 2006/06/29 19:49:26 gunter Exp $
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// GEANT4 tag $Name: geant4-08-01 $
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//
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//--------------- G4MuPairProduction52 physics process ------------------
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// by Laszlo Urban, May 1998
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//------------------------------------------------------------------------------
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//
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// Modified:
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//
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// 17-09-01 migration of Materials to pure STL (mma)
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// 29.05.01 V.Ivanchenko minor changes to provide ANSI -wall compilation
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// 28-09-01 suppression of theMuonPlus ..etc..data members (mma)
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// 16-01-03 Migrade to cut per region (V.Ivanchenko)
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// 08-08-03 This class is frozen at the release 5.2 (V.Ivanchenko)
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//
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//------------------------------------------------------------------------------
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4double G4MuPairProduction52::GetMeanFreePath(const G4Track& trackData,
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G4double,
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G4ForceCondition* condition)
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{
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const G4DynamicParticle* aDynamicParticle;
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G4double MeanFreePath;
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G4bool isOutRange ;
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*condition = NotForced ;
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aDynamicParticle = trackData.GetDynamicParticle();
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const G4MaterialCutsCouple* couple = trackData.GetMaterialCutsCouple();
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G4double KineticEnergy = aDynamicParticle->GetKineticEnergy();
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if (KineticEnergy < LowestKineticEnergy)
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MeanFreePath = DBL_MAX ;
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else {
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if (KineticEnergy > HighestKineticEnergy)
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KineticEnergy = 0.99*HighestKineticEnergy ;
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MeanFreePath = (*theMeanFreePathTable)(couple->GetIndex())->
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GetValue( KineticEnergy, isOutRange );
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}
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return MeanFreePath;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4double G4MuPairProduction52::ComputeMeanFreePath(
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const G4ParticleDefinition* ParticleType,
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G4double KineticEnergy,
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const G4MaterialCutsCouple* couple)
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{
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const G4Material* aMaterial = couple->GetMaterial();
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const G4ElementVector* theElementVector = aMaterial->GetElementVector();
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const G4double* theAtomNumDensityVector =
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aMaterial->GetAtomicNumDensityVector();
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size_t index = couple->GetIndex();
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G4double ElectronEnergyCut = (*electronEnergyCuts)[index];
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G4double PositronEnergyCut = (*positronEnergyCuts)[index];
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G4double SIGMA = 0;
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for ( size_t i=0 ; i < aMaterial->GetNumberOfElements() ; i++ )
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{
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SIGMA += theAtomNumDensityVector[i] *
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ComputeMicroscopicCrossSection( ParticleType, KineticEnergy,
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(*theElementVector)[i]->GetZ(),
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ElectronEnergyCut,PositronEnergyCut );
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}
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return SIGMA > 0. ? 1./SIGMA : DBL_MAX;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4bool G4MuPairProduction52::IsApplicable(
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const G4ParticleDefinition& particle)
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{
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return ((&particle == G4MuonPlus::MuonPlus() ) ||
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(&particle == G4MuonMinus::MuonMinus()) );
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4double G4MuPairProduction52::SecondaryEnergyThreshold(size_t index)
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{
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return (*electronEnergyCuts)[index] + (*positronEnergyCuts)[index]
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+ 2.*electron_mass_c2;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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