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28 // GEANT4 tag $Name: geant4-09-01-ref-00 $
30 // ---------------------------------------------------------------
31 // GEANT 4 class inlined methods file
33 // History: based on object model of
34 // 2nd December 1995, G.Cosmo
35 // ------------ G4eLowEnergyLoss physics process ------------
36 // by Laszlo Urban, 20 March 1997
37 // ***************************************************************
38 // It is the first implementation of the NEW UNIFIED ENERGY LOSS PROCESS.
39 // It calculates the energy loss of e+/e-.
40 // -------------------------------------------------------------
43 // 28-03-02 V.Ivanchenko add fluorescence flag
44 // 21-01-03 V.Ivanchenko cut per region
45 // 18-04-03 V.Ivanchenko finalRange redefinition
47 // ---------------------------------------------------------------
49 inline G4double G4eLowEnergyLoss::GetConstraints(
50 const G4DynamicParticle* aParticle,
51 const G4MaterialCutsCouple* couple)
54 // returns the Step limit
55 // dRoverRange is the max. allowed relative range loss in one Step
56 // it calculates dEdx and the range as well....
58 const G4ParticleDefinition* ParticleType=aParticle->GetDefinition();
60 Charge = aParticle->GetDefinition()->GetPDGCharge();
61 if(Charge != lastCharge) lastCharge = Charge ;
63 G4double KineticEnergy = aParticle->GetKineticEnergy();
65 fdEdx = G4EnergyLossTables::GetDEDX(ParticleType,KineticEnergy,couple);
67 G4EnergyLossTables::GetRange(ParticleType,KineticEnergy,couple);
69 G4double r = std::min(finalRange, couple->GetProductionCuts()
70 ->GetProductionCut(idxG4ElectronCut));
73 StepLimit = dRoverRange*fRangeNow + r*(1.0 - dRoverRange)*(2.0 - r/fRangeNow);
74 //randomise this value
75 if (rndmStepFlag) StepLimit = finalRange + (StepLimit-finalRange)*G4UniformRand();
76 if (StepLimit > fRangeNow) StepLimit = fRangeNow;
78 else StepLimit = fRangeNow;
85 inline G4double G4eLowEnergyLoss::GetContinuousStepLimit(
88 G4double currentMinimumStep,
93 GetConstraints(track.GetDynamicParticle(),track.GetMaterialCutsCouple());
95 if ((Step>0.0)&&(Step<currentMinimumStep)) currentMinimumStep = Step;
101 inline G4bool G4eLowEnergyLoss::IsApplicable(const G4ParticleDefinition&
104 return( (&particle == G4Electron::Electron())
105 ||(&particle == G4Positron::Positron()) );
108 inline void G4eLowEnergyLoss::ActivateFluorescence(G4bool val)
113 inline G4bool G4eLowEnergyLoss::Fluorescence() const