Gabriele Cosmo
113 lines
4.9 KiB
Plaintext
113 lines
4.9 KiB
Plaintext
//
|
|
// ********************************************************************
|
|
// * DISCLAIMER *
|
|
// * *
|
|
// * The following disclaimer summarizes all the specific disclaimers *
|
|
// * of contributors to this software. The specific disclaimers,which *
|
|
// * govern, are listed with their locations in: *
|
|
// * http://cern.ch/geant4/license *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. *
|
|
// * *
|
|
// * This code implementation is the intellectual property of the *
|
|
// * GEANT4 collaboration. *
|
|
// * By copying, distributing or modifying the Program (or any work *
|
|
// * based on the Program) you indicate your acceptance of this *
|
|
// * statement, and all its terms. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// $Id: G4MuPairProduction52.icc,v 1.1 2003/08/08 11:28:40 vnivanch Exp $
|
|
// GEANT4 tag $Name: geant4-06-00-patch-01 $
|
|
//
|
|
//--------------- G4MuPairProduction52 physics process ------------------
|
|
// by Laszlo Urban, May 1998
|
|
//------------------------------------------------------------------------------
|
|
//
|
|
// Modified:
|
|
//
|
|
// 17-09-01 migration of Materials to pure STL (mma)
|
|
// 29.05.01 V.Ivanchenko minor changes to provide ANSI -wall compilation
|
|
// 28-09-01 suppression of theMuonPlus ..etc..data members (mma)
|
|
// 16-01-03 Migrade to cut per region (V.Ivanchenko)
|
|
// 08-08-03 This class is frozen at the release 5.2 (V.Ivanchenko)
|
|
//
|
|
//------------------------------------------------------------------------------
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline G4double G4MuPairProduction52::GetMeanFreePath(const G4Track& trackData,
|
|
G4double,
|
|
G4ForceCondition* condition)
|
|
{
|
|
const G4DynamicParticle* aDynamicParticle;
|
|
G4double MeanFreePath;
|
|
G4bool isOutRange ;
|
|
|
|
*condition = NotForced ;
|
|
|
|
aDynamicParticle = trackData.GetDynamicParticle();
|
|
const G4MaterialCutsCouple* couple = trackData.GetMaterialCutsCouple();
|
|
G4double KineticEnergy = aDynamicParticle->GetKineticEnergy();
|
|
|
|
if (KineticEnergy < LowestKineticEnergy)
|
|
MeanFreePath = DBL_MAX ;
|
|
else {
|
|
if (KineticEnergy > HighestKineticEnergy)
|
|
KineticEnergy = 0.99*HighestKineticEnergy ;
|
|
MeanFreePath = (*theMeanFreePathTable)(couple->GetIndex())->
|
|
GetValue( KineticEnergy, isOutRange );
|
|
}
|
|
return MeanFreePath;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline G4double G4MuPairProduction52::ComputeMeanFreePath(
|
|
const G4ParticleDefinition* ParticleType,
|
|
G4double KineticEnergy,
|
|
const G4MaterialCutsCouple* couple)
|
|
{
|
|
const G4Material* aMaterial = couple->GetMaterial();
|
|
const G4ElementVector* theElementVector = aMaterial->GetElementVector();
|
|
const G4double* theAtomNumDensityVector =
|
|
aMaterial->GetAtomicNumDensityVector();
|
|
size_t index = couple->GetIndex();
|
|
G4double ElectronEnergyCut = (*electronEnergyCuts)[index];
|
|
G4double PositronEnergyCut = (*positronEnergyCuts)[index];
|
|
|
|
G4double SIGMA = 0;
|
|
for ( size_t i=0 ; i < aMaterial->GetNumberOfElements() ; i++ )
|
|
{
|
|
SIGMA += theAtomNumDensityVector[i] *
|
|
ComputeMicroscopicCrossSection( ParticleType, KineticEnergy,
|
|
(*theElementVector)[i]->GetZ(),
|
|
ElectronEnergyCut,PositronEnergyCut );
|
|
}
|
|
|
|
return SIGMA > 0. ? 1./SIGMA : DBL_MAX;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline G4bool G4MuPairProduction52::IsApplicable(
|
|
const G4ParticleDefinition& particle)
|
|
{
|
|
return ((&particle == G4MuonPlus::MuonPlus() ) ||
|
|
(&particle == G4MuonMinus::MuonMinus()) );
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline G4double G4MuPairProduction52::SecondaryEnergyThreshold(size_t index)
|
|
{
|
|
return (*electronEnergyCuts)[index] + (*positronEnergyCuts)[index]
|
|
+ 2.*electron_mass_c2;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|