Gabriele Cosmo
77 lines
3.6 KiB
Plaintext
77 lines
3.6 KiB
Plaintext
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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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 *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4PhotoElectricEffect.icc,v 1.10 2002/04/18 10:12:01 maire Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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// 12-06-96, update by M.Maire
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// 17-09-96, PartialSumSigma(i)
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// split ComputeBinbingEnergy(), M.Maire
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// 08-01-97, crossection table + meanfreepath table , M.Maire
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// 13-03-97, adapted for the new physics scheme, M.Maire
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// 20-11-97, change for lowest energy limit default action
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// 17-11-98, use table of atomic shells in PostStepDoIt, mma
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// 06-01-99, use Sandia crossSection, V.Grichine mma
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// 28-05-01, V.Ivanchenko minor changes to provide ANSI -wall compilation
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// 17-09-01, migration of Materials to pure STL (mma)
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// 10-01-02, moved few function from icc to cc
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// 17-04-02, Keep only Sandia crossSections. Remove BuildPhysicsTables.
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// Simplify public interface (mma)
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4bool G4PhotoElectricEffect::IsApplicable(const G4ParticleDefinition&
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particle)
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{
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return ( &particle == G4Gamma::Gamma() );
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4double G4PhotoElectricEffect::GetMeanFreePath(const G4Track& aTrack,
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G4double,
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G4ForceCondition*)
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// returns the gamma mean free path in GEANT4 internal units
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{
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G4double GammaEnergy = aTrack.GetDynamicParticle()->GetKineticEnergy();
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G4double* SandiaCof = aTrack.GetMaterial()->GetSandiaTable()
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->GetSandiaCofForMaterial(GammaEnergy);
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G4double energy2 = GammaEnergy*GammaEnergy, energy3 = GammaEnergy*energy2,
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energy4 = energy2*energy2;
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G4double SIGMA = SandiaCof[0]/GammaEnergy + SandiaCof[1]/energy2 +
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SandiaCof[2]/energy3 + SandiaCof[3]/energy4;
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MeanFreePath = SIGMA > DBL_MIN ? 1./SIGMA : DBL_MAX;
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return MeanFreePath;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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