[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4FinalStateExcitationEmfietzoglou.cc,v 1.2 2007/11/09 20:11:04 pia Exp $ |
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| 28 | // GEANT4 tag $Name: $ |
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| 29 | // |
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| 30 | // Contact Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch) |
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| 31 | // |
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| 32 | // Reference: TNS Geant4-DNA paper |
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| 33 | // Reference for implementation model: NIM. 155, pp. 145-156, 1978 |
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| 34 | |
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| 35 | // History: |
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| 36 | // ----------- |
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| 37 | // Date Name Modification |
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| 38 | // 28 Apr 2007 M.G. Pia Created in compliance with design described in TNS paper |
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| 39 | // |
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| 40 | // ------------------------------------------------------------------- |
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| 41 | |
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| 42 | // Class description: |
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| 43 | // Reference: TNS Geant4-DNA paper |
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| 44 | // S. Chauvie et al., Geant4 physics processes for microdosimetry simulation: |
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| 45 | // design foundation and implementation of the first set of models, |
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| 46 | // IEEE Trans. Nucl. Sci., vol. 54, no. 6, Dec. 2007. |
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| 47 | // Further documentation available from http://www.ge.infn.it/geant4/dna |
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| 48 | |
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| 49 | // ------------------------------------------------------------------- |
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| 50 | |
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| 51 | |
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| 52 | #include "G4FinalStateExcitationEmfietzoglou.hh" |
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| 53 | #include "G4Track.hh" |
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| 54 | #include "G4Step.hh" |
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| 55 | #include "G4DynamicParticle.hh" |
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| 56 | #include "Randomize.hh" |
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| 57 | |
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| 58 | #include "G4ParticleTypes.hh" |
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| 59 | #include "G4ParticleDefinition.hh" |
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| 60 | #include "G4Electron.hh" |
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| 61 | #include "G4SystemOfUnits.hh" |
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| 62 | #include "G4ParticleMomentum.hh" |
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| 63 | |
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| 64 | G4FinalStateExcitationEmfietzoglou::G4FinalStateExcitationEmfietzoglou() |
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| 65 | { |
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| 66 | name = "FinalStateExcitationEmfietzoglou"; |
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| 67 | lowEnergyLimit = 7.4 * eV; |
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| 68 | highEnergyLimit = 10 * MeV; |
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| 69 | } |
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| 70 | |
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| 71 | |
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| 72 | G4FinalStateExcitationEmfietzoglou::~G4FinalStateExcitationEmfietzoglou() |
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| 73 | { |
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| 74 | // empty |
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| 75 | // G4DynamicParticle objects produced are owned by client |
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| 76 | } |
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| 77 | |
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| 78 | |
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| 79 | const G4FinalStateProduct& G4FinalStateExcitationEmfietzoglou::GenerateFinalState(const G4Track& track, const G4Step& /* step */) |
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| 80 | { |
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| 81 | // Clear previous secondaries, energy deposit and particle kill status |
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| 82 | product.Clear(); |
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| 83 | |
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| 84 | const G4DynamicParticle* particle = track.GetDynamicParticle(); |
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| 85 | |
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| 86 | // Kinetic energy of primary particle |
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| 87 | G4double k = particle->GetKineticEnergy(); |
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| 88 | |
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| 89 | // Select excitation level on the basis of partial excitation cross section |
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| 90 | G4int level = cross.RandomSelect(k); |
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| 91 | // Excitation energy corresponding to the selected level |
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| 92 | G4double excitationEnergy = waterStructure.ExcitationEnergy(level); |
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| 93 | G4double newEnergy = k - excitationEnergy; |
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| 94 | |
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| 95 | if (newEnergy > lowEnergyLimit) |
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| 96 | { |
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| 97 | // Deposit excitation energy locally, modify primary energy accordingly |
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| 98 | // Particle direction is unchanged |
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| 99 | product.ModifyPrimaryParticle(particle->GetMomentumDirection(),newEnergy); |
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| 100 | product.AddEnergyDeposit(excitationEnergy); |
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| 101 | } |
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| 102 | else |
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| 103 | { |
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| 104 | // Primary particle is killed |
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| 105 | product.KillPrimaryParticle(); |
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| 106 | } |
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| 107 | |
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| 108 | return product; |
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| 109 | } |
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| 110 | |
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| 111 | |
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