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This commit is contained in:
Gabriele Cosmo
2016-06-08 15:55:53 +02:00
parent e7d7193284
commit cfcb558cfe
3050 changed files with 91703 additions and 48310 deletions
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source/processes/electromagnetic/standard/src/G4hIonisation.cc
+29 -14
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@@ -5,8 +5,8 @@
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
//
// $Id: G4hIonisation.cc,v 1.11 2000/05/23 14:42:22 urban Exp $
// GEANT4 tag $Name: geant4-02-00 $
// $Id: G4hIonisation.cc,v 1.12 2000/08/10 22:13:01 vnivanch Exp $
// GEANT4 tag $Name: geant4-03-00 $
//
// -------------------------------------------------------------
// GEANT 4 class implementation file
@@ -28,6 +28,10 @@
// 02/02/99: bugs fixed , L.Urban
// 29/07/99: correction in BuildLossTable for low energy, L.Urban
// 10/02/00 modifications , new e.m. structure, L.Urban
// 10/08/00 : V.Ivanchenko change BuildLambdaTable, in order to
// simulate energy losses of ions; correction to
// cross section for particles with spin 1 is inserted
// as well
// --------------------------------------------------------------
@@ -71,7 +75,7 @@ void G4hIonisation::BuildPhysicsTable(const G4ParticleDefinition& aParticleType)
ParticleMass = aParticleType.GetPDGMass() ;
Charge = aParticleType.GetPDGCharge();
Charge = (aParticleType.GetPDGCharge())/eplus;
G4double ElectronCutInRange = G4Electron::Electron()->GetCuts();
@@ -289,6 +293,7 @@ void G4hIonisation::BuildLambdaTable(const G4ParticleDefinition& aParticleType)
// Build mean free path tables for the delta ray production process
// tables are built for MATERIALS
G4double chargeSquare = Charge*Charge ;
G4double LowEdgeEnergy , Value ,sigma ;
G4bool isOutRange ;
const G4MaterialTable* theMaterialTable=
@@ -345,10 +350,10 @@ void G4hIonisation::BuildLambdaTable(const G4ParticleDefinition& aParticleType)
for (G4int iel=0; iel<NumberOfElements; iel++ )
{
sigma += theAtomicNumDensityVector[iel]*
ComputeMicroscopicCrossSection(aParticleType,
LowEdgeEnergy,
(*theElementVector)(iel)->GetZ() ) ;
sigma += theAtomicNumDensityVector[iel]*
chargeSquare*
ComputeMicroscopicCrossSection(aParticleType,
LowEdgeEnergy,(*theElementVector)(iel)->GetZ() ) ;
}
// mean free path = 1./macroscopic cross section
@@ -401,16 +406,26 @@ G4double G4hIonisation::ComputeMicroscopicCrossSection(
TotalCrossSection = (1.-tempvar*(1.-betasquare*log(tempvar)))
/DeltaCutInKineticEnergyNow;
G4double spin = aParticleType.GetPDGSpin() ;
// +term for spin=1/2 particle
if(aParticleType.GetPDGSpin() == 0.5)
{
TotalCrossSection += 0.5
if(0.5 == spin)
{
TotalCrossSection += 0.5
*(MaxKineticEnergyTransfer-DeltaCutInKineticEnergyNow)
/(TotalEnergy*TotalEnergy);
G4double Section = 0.5
*(MaxKineticEnergyTransfer-DeltaCutInKineticEnergyNow)
/(TotalEnergy*TotalEnergy);
}
// +term for spin=1 particle
} else if( 0.9 < spin )
{
TotalCrossSection +=
-log(tempvar)/(3.0*DeltaCutInKineticEnergyNow) +
(MaxKineticEnergyTransfer - DeltaCutInKineticEnergyNow) *
( (5.0+ 1.0/tempvar)*0.25 / (TotalEnergy*TotalEnergy) -
betasquare /
(MaxKineticEnergyTransfer * DeltaCutInKineticEnergyNow)
) / 3.0 ;
}
TotalCrossSection = twopi_mc2_rcl2 * AtomicNumber
*TotalCrossSection/betasquare;
}