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This commit is contained in:
Gabriele Cosmo
2016-06-09 16:15:05 +02:00
parent b79225fb37
commit 74cad5e589
3877 changed files with 234205 additions and 167127 deletions
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source/processes/cuts/src/G4RToEConvForPositron.cc
+3 -53
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@@ -24,8 +24,8 @@
// ********************************************************************
//
//
// $Id: G4RToEConvForPositron.cc,v 1.5 2006/06/29 19:30:28 gunter Exp $
// GEANT4 tag $Name: geant4-09-02 $
// $Id: G4RToEConvForPositron.cc,v 1.7 2009/09/11 15:21:39 kurasige Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
//
// --------------------------------------------------------------
@@ -75,7 +75,7 @@ G4double G4RToEConvForPositron::ComputeLoss(G4double AtomicNumber,
G4double Mass = theParticle->GetPDGMass();
// calculate dE/dx for electrons
if( std::abs(AtomicNumber-Z)>0.1 ) {
if( std::fabs(AtomicNumber-Z)>0.1 ) {
Z = AtomicNumber;
taul = Tlow/Mass;
ionpot = 1.6e-5*MeV*std::exp(0.9*std::log(Z))/Mass;
@@ -121,53 +121,3 @@ G4double G4RToEConvForPositron::ComputeLoss(G4double AtomicNumber,
}
void G4RToEConvForPositron::BuildRangeVector(const G4Material* aMaterial,
G4double maxEnergy,
G4double aMass,
G4PhysicsLogVector* rangeVector)
{
// create range vector for a material
const G4double tlim = 10.*keV;
const G4int maxnbint = 100;
const G4ElementVector* elementVector = aMaterial->GetElementVector();
const G4double* atomicNumDensityVector = aMaterial->GetAtomicNumDensityVector();
G4int NumEl = aMaterial->GetNumberOfElements();
// calculate parameters of the low energy part first
size_t i;
G4double loss=0.;
for (i=0; i<size_t(NumEl); i++) {
G4bool isOut;
G4int IndEl = (*elementVector)[i]->GetIndex();
loss += atomicNumDensityVector[i]*
(*theLossTable)[IndEl]->GetValue(tlim,isOut);
}
G4double taulim = tlim/aMass;
G4double clim = std::sqrt(taulim)*loss;
G4double taumax = maxEnergy/aMass;
// now the range vector can be filled
for ( i=0; i<size_t(TotBin); i++) {
G4double LowEdgeEnergy = rangeVector->GetLowEdgeEnergy(i);
G4double tau = LowEdgeEnergy/aMass;
if ( tau <= taulim ) {
G4double Value = 2.*aMass*tau*std::sqrt(tau)/(3.*clim);
rangeVector->PutValue(i,Value);
} else {
G4double rangelim = 2.*aMass*taulim*std::sqrt(taulim)/(3.*clim);
G4double ltaulow = std::log(taulim);
G4double ltauhigh = std::log(tau);
G4double ltaumax = std::log(taumax);
G4int nbin = G4int(maxnbint*(ltauhigh-ltaulow)/(ltaumax-ltaulow));
if( nbin < 1 ) nbin = 1;
G4double Value = RangeLogSimpson( NumEl, elementVector,
atomicNumDensityVector, aMass,
ltaulow, ltauhigh, nbin)
+ rangelim;
rangeVector->PutValue(i,Value);
}
}
}