Gabriele Cosmo
99 lines
3.4 KiB
Plaintext
99 lines
3.4 KiB
Plaintext
// 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: G4eEnergyLossPlus.icc,v 1.3.8.1 1999/12/07 20:50:53 gunter Exp $
|
|
// GEANT4 tag $Name: geant4-01-00 $
|
|
//
|
|
// $Id:
|
|
// ---------------------------------------------------------------
|
|
// GEANT 4 class inlined methods file
|
|
//
|
|
// For information related to this code contact:
|
|
// CERN, IT Division, ASD group
|
|
// History: based on object model of
|
|
// 2nd December 1995, G.Cosmo
|
|
// ------------ G4eEnergyLossPlus physics process ------------
|
|
// by Laszlo Urban, 20 March 1997
|
|
// ***************************************************************
|
|
// It is the first implementation of the NEW UNIFIED ENERGY LOSS PROCESS.
|
|
// It calculates the energy loss of e+/e-.
|
|
// -------------------------------------------------------------
|
|
// 18/11/98 , L. Urban
|
|
// It is a modified version of G4eEnergyLoss:
|
|
// continuous energy loss with generation of subcutoff delta rays
|
|
// ---------------------------------------------------------------
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline G4double G4eEnergyLossPlus::GetConstraints(
|
|
const G4DynamicParticle* aParticle,
|
|
G4Material* aMaterial)
|
|
{
|
|
// returns the Step limit
|
|
// dRoverRange is the max. allowed relative range loss in one Step
|
|
// it calculates dEdx and the range as well....
|
|
|
|
G4double CutInRange,StepLimit;
|
|
G4bool isOutRange;
|
|
|
|
const G4ParticleDefinition* ParticleType=aParticle->GetDefinition();
|
|
|
|
Charge = aParticle->GetDefinition()->GetPDGCharge();
|
|
if(Charge != lastCharge)
|
|
{
|
|
lastCharge = Charge ;
|
|
|
|
}
|
|
|
|
G4double KineticEnergy = aParticle->GetKineticEnergy();
|
|
|
|
fdEdx = G4EnergyLossTables::GetDEDX(ParticleType,KineticEnergy,aMaterial);
|
|
fRangeNow =
|
|
G4EnergyLossTables::GetRange(ParticleType,KineticEnergy,aMaterial);
|
|
|
|
// compute the (random) Step limit
|
|
if (fRangeNow>finalRange)
|
|
{
|
|
StepLimit = c1lim*fRangeNow+c2lim+c3lim/fRangeNow;
|
|
//randomise this value
|
|
if (rndmStepFlag) StepLimit = finalRange +
|
|
(StepLimit-finalRange)*G4UniformRand();
|
|
if (StepLimit > fRangeNow) StepLimit = fRangeNow;
|
|
}
|
|
else StepLimit = fRangeNow;
|
|
|
|
return StepLimit;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline G4double G4eEnergyLossPlus::GetContinuousStepLimit(
|
|
const G4Track& track,
|
|
G4double,
|
|
G4double currentMinimumStep,
|
|
G4double&)
|
|
{
|
|
|
|
G4double Step =
|
|
GetConstraints(track.GetDynamicParticle(),track.GetMaterial());
|
|
|
|
if ((Step>0.0)&&(Step<currentMinimumStep)) currentMinimumStep = Step;
|
|
|
|
return Step ;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline G4bool G4eEnergyLossPlus::IsApplicable(const G4ParticleDefinition&
|
|
particle)
|
|
{
|
|
return( (&particle == G4Electron::Electron())
|
|
||(&particle == G4Positron::Positron()) );
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|