Gabriele Cosmo
69 lines
3.0 KiB
Plaintext
69 lines
3.0 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: G4DNAElectronElasticScatteringInWater.icc,v 1.4 2006/06/29 19:34:02 gunter Exp $
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// GEANT4 tag $Name: geant4-08-01 $
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//
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#ifdef G4DNAELECTRONELASTICSCATTERINGINWATER_HH
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template<typename TotalCrossSectionPolicy, typename FinalStatesPolicy>
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G4VParticleChange * G4DNAElectronElasticScatteringInWater<TotalCrossSectionPolicy, FinalStatesPolicy> :: PostStepDoIt(const G4Track & aTrack, const G4Step & aStep)
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{
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this->aParticleChange.Initialize(aTrack);
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G4double k;
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k=aTrack.GetDynamicParticle()->GetKineticEnergy();
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G4double cosTheta;
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const G4int z(10); // H2O number of electrons
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cosTheta=FinalStatesPolicy::RandomizeCosTheta(k, z);
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G4double phi;
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phi=2*pi*G4UniformRand();
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G4ThreeVector zVers(aTrack.GetDynamicParticle()->GetMomentumDirection());
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G4ThreeVector xVers(zVers.orthogonal());
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G4ThreeVector yVers(zVers.cross(xVers));
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G4double xDir;
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G4double yDir;
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xDir=std::sqrt(1-cosTheta*cosTheta);
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yDir=xDir;
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xDir*=std::cos(phi);
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yDir*=std::sin(phi);
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G4ThreeVector zPrimeVers((xDir*xVers + yDir*yVers + cosTheta*zVers).unit());
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this->aParticleChange.ProposeEnergy(k);
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this->aParticleChange.ProposeMomentumDirection(zPrimeVers);
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this->aParticleChange.SetNumberOfSecondaries(0);
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return G4VDNAProcessInWater<TotalCrossSectionPolicy, FinalStatesPolicy>::PostStepDoIt(aTrack, aStep);
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}
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#endif /* G4DNAELECTRONELASTICSCATTERINGINWATER_HH */
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