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This commit is contained in:
Gabriele Cosmo
2016-12-09 12:35:28 +01:00
parent 4ec577e5c4
commit a3452e42ac
3514 changed files with 210500 additions and 89628 deletions
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source/processes/electromagnetic/standard/src/G4eBremsstrahlungRelModel.cc
+21 -19
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@@ -23,7 +23,7 @@
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
// $Id: G4eBremsstrahlungRelModel.cc 97273 2016-05-31 14:16:47Z gcosmo $
// $Id: G4eBremsstrahlungRelModel.cc 98737 2016-08-09 12:51:38Z gcosmo $
//
// -------------------------------------------------------------------
//
@@ -95,10 +95,9 @@ G4eBremsstrahlungRelModel::G4eBremsstrahlungRelModel(
isElectron(true),
fMigdalConstant(classic_electr_radius*electron_Compton_length*electron_Compton_length*4.0*pi),
fLPMconstant(fine_structure_const*electron_mass_c2*electron_mass_c2/(4.*pi*hbarc)),
fXiLPM(0), fPhiLPM(0), fGLPM(0),
use_completescreening(false)
{
fParticleChange = 0;
fParticleChange = nullptr;
theGamma = G4Gamma::Gamma();
lowestKinEnergy = 1.0*MeV;
@@ -110,10 +109,10 @@ G4eBremsstrahlungRelModel::G4eBremsstrahlungRelModel(
//SetAngularDistribution(new G4ModifiedTsai());
SetAngularDistribution(new G4DipBustGenerator());
particleMass = kinEnergy = totalEnergy = currentZ = z13 = z23 = lnZ = Fel
particleMass = kinEnergy = totalEnergy = z13 = z23 = lnZ = Fel
= Finel = fCoulomb = fMax = densityFactor = densityCorr = lpmEnergy
= xiLPM = phiLPM = gLPM = klpm = kp = 0.0;
currentZ = 0;
energyThresholdLPM = 1.e39;
InitialiseConstants();
@@ -179,7 +178,7 @@ void G4eBremsstrahlungRelModel::Initialise(const G4ParticleDefinition* p,
{
if(p) { SetParticle(p); }
currentZ = 0.;
currentZ = 0;
if(IsMaster() && LowEnergyLimit() < HighEnergyLimit()) {
InitialiseElementSelectors(p, cuts);
@@ -232,9 +231,9 @@ G4double G4eBremsstrahlungRelModel::ComputeDEDXPerVolume(
for (size_t i=0; i<material->GetNumberOfElements(); i++) {
G4VEmModel::SetCurrentElement((*theElementVector)[i]);
SetCurrentElement((*theElementVector)[i]->GetZ());
SetCurrentElement((*theElementVector)[i]->GetZasInt());
dedx += theAtomicNumDensityVector[i]*currentZ*currentZ*ComputeBremLoss(cut);
dedx += theAtomicNumDensityVector[i]*(currentZ*currentZ)*ComputeBremLoss(cut);
}
dedx *= bremFactor;
@@ -294,7 +293,7 @@ G4double G4eBremsstrahlungRelModel::ComputeCrossSectionPerAtom(
if(cut >= tmax) { return 0.0; }
SetCurrentElement(Z);
SetCurrentElement(G4lrint(Z));
G4double cross = ComputeXSectionPerAtom(cut);
@@ -440,8 +439,9 @@ G4double G4eBremsstrahlungRelModel::ComputeRelDXSectionPerAtom(G4double gammaEne
// G4double xiLPM, gLPM, phiLPM; // to be made member variables !!!
CalcLPMFunctions(gammaEnergy);
G4double mainLPM = xiLPM*(y2 * gLPM + yone2*phiLPM) * ( (Fel-fCoulomb) + Finel/currentZ );
G4double secondTerm = (1.-y)/12.*(1.+1./currentZ);
G4double xz = 1.0/(G4double)currentZ;
G4double mainLPM = xiLPM*(y2 * gLPM + yone2*phiLPM) * ( (Fel-fCoulomb) + Finel*xz );
G4double secondTerm = (1.-y)/12.*(1. + xz);
G4double cross = mainLPM+secondTerm;
return cross;
@@ -462,21 +462,23 @@ G4double G4eBremsstrahlungRelModel::ComputeDXSectionPerAtom(G4double gammaEnergy
G4double main=0.,secondTerm=0.;
G4double currZ = (G4double)currentZ;
if (use_completescreening|| currentZ<5) {
// ** form factors complete screening case **
main = (3./4.*y*y - y + 1.) * ( (Fel-fCoulomb) + Finel/currentZ );
secondTerm = (1.-y)/12.*(1.+1./currentZ);
main = (3./4.*y*y - y + 1.) * ( (Fel-fCoulomb) + Finel/currZ );
secondTerm = (1.-y)/12.*(1.+1./currZ);
}
else {
// ** intermediate screening using Thomas-Fermi FF from Tsai only valid for Z>=5**
G4double dd=100.*electron_mass_c2*y/(totalEnergy-gammaEnergy);
G4double gg=dd/z13;
G4double eps=dd/z23;
G4double phi1=Phi1(gg,currentZ), phi1m2=Phi1M2(gg,currentZ);
G4double psi1=Psi1(eps,currentZ), psi1m2=Psi1M2(eps,currentZ);
G4double phi1=Phi1(gg,currZ), phi1m2=Phi1M2(gg,currZ);
G4double psi1=Psi1(eps,currZ), psi1m2=Psi1M2(eps,currZ);
main = (3./4.*y*y - y + 1.) * ( (0.25*phi1-1./3.*lnZ-fCoulomb) + (0.25*psi1-2./3.*lnZ)/currentZ );
secondTerm = (1.-y)/8.*(phi1m2+psi1m2/currentZ);
main = (3./4.*y*y - y + 1.) *
( (0.25*phi1-1./3.*lnZ-fCoulomb) + (0.25*psi1-2./3.*lnZ)/currZ );
secondTerm = (1.-y)/8.*(phi1m2+psi1m2/currZ);
}
G4double cross = main+secondTerm;
return cross;
@@ -501,7 +503,7 @@ void G4eBremsstrahlungRelModel::SampleSecondaries(
const G4Element* elm =
SelectRandomAtom(couple,particle,kineticEnergy,cut,emax);
SetCurrentElement(elm->GetZ());
SetCurrentElement(elm->GetZasInt());
kinEnergy = kineticEnergy;
totalEnergy = kineticEnergy + particleMass;
@@ -543,7 +545,7 @@ void G4eBremsstrahlungRelModel::SampleSecondaries(
G4ThreeVector gammaDirection =
GetAngularDistribution()->SampleDirection(dp, totalEnergy-gammaEnergy,
G4lrint(currentZ),
currentZ,
couple->GetMaterial());
// create G4DynamicParticle object for the Gamma