[968] | 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 | // $Id: G4FinalStatePsCreationChampion.cc,v 1.1 2008/07/16 19:01:07 sincerti Exp $ |
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[1007] | 27 | // GEANT4 tag $Name: geant4-09-02 $ |
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[968] | 28 | // ------------------------------------------------------------------- |
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| 29 | |
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| 30 | #include "G4FinalStatePsCreationChampion.hh" |
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| 31 | |
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| 32 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 33 | |
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| 34 | G4FinalStatePsCreationChampion::G4FinalStatePsCreationChampion() |
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| 35 | { |
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| 36 | lowEnergyLimit = 10. * eV; |
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| 37 | highEnergyLimit = 5. * keV; |
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| 38 | |
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| 39 | G4ParticleDefinition* positronDef = G4Positron::PositronDefinition(); |
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| 40 | |
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| 41 | if (positronDef == 0) G4Exception("G4FinalStatePsCreationChampion constructor: positron is not defined"); |
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| 42 | } |
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| 43 | |
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| 44 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 45 | |
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| 46 | G4FinalStatePsCreationChampion::~G4FinalStatePsCreationChampion() |
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| 47 | {} |
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| 48 | |
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| 49 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 50 | |
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| 51 | const G4FinalStateProduct& G4FinalStatePsCreationChampion::GenerateFinalState(const G4Track& track, const G4Step& /* step */) |
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| 52 | { |
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| 53 | product.Clear(); |
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| 54 | |
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| 55 | const G4DynamicParticle* particle = track.GetDynamicParticle(); |
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| 56 | |
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| 57 | G4double k = particle->GetKineticEnergy(); |
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| 58 | |
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| 59 | if (k > lowEnergyLimit && k < highEnergyLimit) |
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| 60 | { |
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| 61 | G4ParticleDefinition* definition = particle->GetDefinition(); |
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| 62 | G4ParticleMomentum primaryDirection = particle->GetMomentumDirection(); |
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| 63 | |
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| 64 | G4int positroniumState = cross.RandomSelectState(k,definition); |
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| 65 | |
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| 66 | G4int ionizationShell = cross.RandomSelectShell(k,definition,positroniumState); |
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| 67 | |
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| 68 | G4double bindingEnergy = waterStructure.IonisationEnergy(ionizationShell); |
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| 69 | |
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| 70 | G4double creationEnergy = 13.6*eV/(2*(positroniumState+1)*(positroniumState+1)) ; // Ry = 13.6 * eV; |
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| 71 | |
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| 72 | G4double secondaryKinetic = k + creationEnergy - bindingEnergy; |
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| 73 | |
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| 74 | product.KillPrimaryParticle(); |
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| 75 | product.AddEnergyDeposit(bindingEnergy-creationEnergy); |
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| 76 | |
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| 77 | G4DNAGenericIonsManager * instance(G4DNAGenericIonsManager::Instance()); |
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| 78 | |
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| 79 | if (secondaryKinetic<0) |
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| 80 | { |
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| 81 | G4cout << "***** WARNING in G4FinalStatePsCreationChampion: Ps secondaryKinetic < 0 --> set to zero " << G4endl; |
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| 82 | secondaryKinetic=0; |
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| 83 | } |
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| 84 | |
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| 85 | if (positroniumState == 0) |
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| 86 | product.AddSecondary |
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| 87 | (new G4DynamicParticle(instance->GetIon("Ps-1s"),track.GetDynamicParticle()->GetMomentumDirection(),secondaryKinetic)); |
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| 88 | |
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| 89 | if (positroniumState == 1) |
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| 90 | product.AddSecondary |
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| 91 | (new G4DynamicParticle(instance->GetIon("Ps-2s"),track.GetDynamicParticle()->GetMomentumDirection(),secondaryKinetic)); |
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| 92 | |
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| 93 | } |
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| 94 | |
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| 95 | return product; |
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| 96 | } |
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| 97 | |
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