Gabriele Cosmo
95 lines
3.2 KiB
Plaintext
95 lines
3.2 KiB
Plaintext
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4eEnergyLoss.icc,v 1.4.8.1 1999/12/07 20:50:53 gunter Exp $
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// GEANT4 tag $Name: geant4-01-00 $
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//
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// $Id:
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// ---------------------------------------------------------------
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// GEANT 4 class inlined methods file
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//
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// For information related to this code contact:
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// CERN, IT Division, ASD group
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// History: based on object model of
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// 2nd December 1995, G.Cosmo
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// ------------ G4eEnergyLoss physics process ------------
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// by Laszlo Urban, 20 March 1997
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// ***************************************************************
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// It is the first implementation of the NEW UNIFIED ENERGY LOSS PROCESS.
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// It calculates the energy loss of e+/e-.
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// -------------------------------------------------------------
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//
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// 08-09-98: cleanup
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//
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// ---------------------------------------------------------------
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inline G4double G4eEnergyLoss::GetConstraints(
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const G4DynamicParticle* aParticle,
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G4Material* aMaterial)
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{
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G4double StepLimit;
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// returns the Step limit
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// dRoverRange is the max. allowed relative range loss in one Step
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// it calculates dEdx and the range as well....
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const G4ParticleDefinition* ParticleType=aParticle->GetDefinition();
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Charge = aParticle->GetDefinition()->GetPDGCharge();
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if(Charge != lastCharge)
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{
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lastCharge = Charge ;
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}
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G4double KineticEnergy = aParticle->GetKineticEnergy();
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fdEdx = G4EnergyLossTables::GetDEDX(ParticleType,KineticEnergy,aMaterial);
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fRangeNow =
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G4EnergyLossTables::GetRange(ParticleType,KineticEnergy,aMaterial);
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// compute the (random) Step limit
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if (fRangeNow>finalRange)
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{
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StepLimit = c1lim*fRangeNow+c2lim+c3lim/fRangeNow;
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//randomise this value
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if (rndmStepFlag) StepLimit = finalRange +
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(StepLimit-finalRange)*G4UniformRand();
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if (StepLimit > fRangeNow) StepLimit = fRangeNow;
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}
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else StepLimit = fRangeNow;
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return StepLimit;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4eEnergyLoss::GetContinuousStepLimit(
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const G4Track& track,
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G4double,
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G4double currentMinimumStep,
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G4double&)
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{
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G4double Step =
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GetConstraints(track.GetDynamicParticle(),track.GetMaterial());
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if ((Step>0.0)&&(Step<currentMinimumStep)) currentMinimumStep = Step;
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return Step ;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4bool G4eEnergyLoss::IsApplicable(const G4ParticleDefinition&
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particle)
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{
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return( (&particle == G4Electron::Electron())
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||(&particle == G4Positron::Positron()) );
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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