Gabriele Cosmo
120 lines
4.6 KiB
Plaintext
120 lines
4.6 KiB
Plaintext
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4eLowEnergyLoss.icc,v 1.8 2006/06/29 19:37:44 gunter Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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// ---------------------------------------------------------------
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// GEANT 4 class inlined methods file
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//
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// History: based on object model of
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// 2nd December 1995, G.Cosmo
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// ------------ G4eLowEnergyLoss 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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// 28-03-02 V.Ivanchenko add fluorescence flag
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// 21-01-03 V.Ivanchenko cut per region
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// 18-04-03 V.Ivanchenko finalRange redefinition
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//
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// ---------------------------------------------------------------
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inline G4double G4eLowEnergyLoss::GetConstraints(
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const G4DynamicParticle* aParticle,
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const G4MaterialCutsCouple* couple)
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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) lastCharge = Charge ;
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G4double KineticEnergy = aParticle->GetKineticEnergy();
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fdEdx = G4EnergyLossTables::GetDEDX(ParticleType,KineticEnergy,couple);
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fRangeNow =
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G4EnergyLossTables::GetRange(ParticleType,KineticEnergy,couple);
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G4double r = std::min(finalRange, couple->GetProductionCuts()
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->GetProductionCut(idxG4ElectronCut));
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if (fRangeNow > r) {
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StepLimit = dRoverRange*fRangeNow + r*(1.0 - dRoverRange)*(2.0 - r/fRangeNow);
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//randomise this value
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if (rndmStepFlag) StepLimit = finalRange + (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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//
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inline G4double G4eLowEnergyLoss::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.GetMaterialCutsCouple());
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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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//
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inline G4bool G4eLowEnergyLoss::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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inline void G4eLowEnergyLoss::ActivateFluorescence(G4bool val)
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{
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theFluo = val;
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}
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inline G4bool G4eLowEnergyLoss::Fluorescence() const
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{
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return theFluo;
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}
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//
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