[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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[1055] | 26 | // $Id: G4MuBremsstrahlungModel.hh,v 1.22 2009/02/20 14:48:16 vnivanch Exp $ |
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[1196] | 27 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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[819] | 28 | // |
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| 29 | // ------------------------------------------------------------------- |
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| 30 | // |
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| 31 | // GEANT4 Class header file |
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| 32 | // |
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| 33 | // |
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| 34 | // File name: G4MuBremsstrahlungModel |
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| 35 | // |
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| 36 | // Author: Vladimir Ivanchenko on base of Laszlo Urban code |
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| 37 | // |
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| 38 | // Creation date: 18.05.2002 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // |
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| 42 | // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko) |
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| 43 | // 27-01-03 Make models region aware (V.Ivanchenko) |
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| 44 | // 13-02-03 Add name (V.Ivanchenko) |
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| 45 | // 10-02-04 Add lowestKinEnergy (V.Ivanchenko) |
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| 46 | // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko) |
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[961] | 47 | // 13-02-06 Add ComputeCrossSectionPerAtom (mma) |
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[819] | 48 | // 11-10-07 Add ignoreCut flag (V.Ivanchenko) |
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[961] | 49 | // 28-02-08 Reorganized protected methods and members (V.Ivanchenko) |
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| 50 | // 06-03-08 Remove obsolete methods and members (V.Ivanchenko) |
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[819] | 51 | // |
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| 52 | |
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| 53 | // |
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| 54 | // Class Description: |
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| 55 | // |
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[961] | 56 | // Implementation of bremssrahlung by muons |
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[819] | 57 | |
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| 58 | // ------------------------------------------------------------------- |
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| 59 | // |
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| 60 | |
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| 61 | #ifndef G4MuBremsstrahlungModel_h |
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| 62 | #define G4MuBremsstrahlungModel_h 1 |
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| 63 | |
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| 64 | #include "G4VEmModel.hh" |
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[961] | 65 | #include "G4NistManager.hh" |
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[819] | 66 | |
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| 67 | class G4Element; |
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| 68 | class G4ParticleChangeForLoss; |
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| 69 | |
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| 70 | class G4MuBremsstrahlungModel : public G4VEmModel |
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| 71 | { |
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| 72 | |
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| 73 | public: |
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| 74 | |
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| 75 | G4MuBremsstrahlungModel(const G4ParticleDefinition* p = 0, |
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| 76 | const G4String& nam = "MuBrem"); |
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| 77 | |
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| 78 | virtual ~G4MuBremsstrahlungModel(); |
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| 79 | |
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[1055] | 80 | virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&); |
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[819] | 81 | |
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[1055] | 82 | virtual G4double MinEnergyCut(const G4ParticleDefinition*, |
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| 83 | const G4MaterialCutsCouple*); |
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[819] | 84 | |
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| 85 | virtual G4double ComputeCrossSectionPerAtom( |
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| 86 | const G4ParticleDefinition*, |
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| 87 | G4double kineticEnergy, |
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| 88 | G4double Z, G4double A, |
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| 89 | G4double cutEnergy, |
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| 90 | G4double maxEnergy); |
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[961] | 91 | |
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[819] | 92 | virtual G4double ComputeDEDXPerVolume(const G4Material*, |
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| 93 | const G4ParticleDefinition*, |
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| 94 | G4double kineticEnergy, |
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| 95 | G4double cutEnergy); |
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| 96 | |
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[1055] | 97 | virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*, |
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| 98 | const G4MaterialCutsCouple*, |
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| 99 | const G4DynamicParticle*, |
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| 100 | G4double tmin, |
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| 101 | G4double maxEnergy); |
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[819] | 102 | |
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[961] | 103 | inline void SetLowestKineticEnergy(G4double e); |
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| 104 | |
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[819] | 105 | protected: |
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| 106 | |
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[961] | 107 | G4double ComputMuBremLoss(G4double Z, G4double tkin, G4double cut); |
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| 108 | |
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| 109 | G4double ComputeMicroscopicCrossSection(G4double tkin, |
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| 110 | G4double Z, |
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| 111 | G4double cut); |
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[819] | 112 | |
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[961] | 113 | virtual G4double ComputeDMicroscopicCrossSection(G4double tkin, |
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| 114 | G4double Z, |
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| 115 | G4double gammaEnergy); |
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[819] | 116 | |
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[1055] | 117 | inline void SetParticle(const G4ParticleDefinition*); |
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[819] | 118 | |
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| 119 | private: |
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| 120 | |
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[961] | 121 | G4DataVector* ComputePartialSumSigma(const G4Material* material, |
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| 122 | G4double tkin, G4double cut); |
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[819] | 123 | |
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[961] | 124 | const G4Element* SelectRandomAtom(const G4MaterialCutsCouple* couple) const; |
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[819] | 125 | |
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| 126 | // hide assignment operator |
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| 127 | G4MuBremsstrahlungModel & operator=(const G4MuBremsstrahlungModel &right); |
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| 128 | G4MuBremsstrahlungModel(const G4MuBremsstrahlungModel&); |
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| 129 | |
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[961] | 130 | protected: |
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| 131 | |
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| 132 | const G4ParticleDefinition* particle; |
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| 133 | G4NistManager* nist; |
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| 134 | G4double mass; |
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| 135 | G4double rmass; |
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| 136 | G4double cc; |
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| 137 | G4double coeff; |
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| 138 | G4double sqrte; |
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| 139 | G4double bh; |
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| 140 | G4double bh1; |
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| 141 | G4double btf; |
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| 142 | G4double btf1; |
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| 143 | |
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| 144 | private: |
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| 145 | |
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[819] | 146 | G4ParticleDefinition* theGamma; |
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| 147 | G4ParticleChangeForLoss* fParticleChange; |
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| 148 | |
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| 149 | G4double highKinEnergy; |
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| 150 | G4double lowKinEnergy; |
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| 151 | G4double lowestKinEnergy; |
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| 152 | G4double minThreshold; |
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| 153 | |
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| 154 | std::vector<G4DataVector*> partialSumSigma; |
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| 155 | }; |
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| 156 | |
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| 157 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 158 | |
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[961] | 159 | inline void G4MuBremsstrahlungModel::SetLowestKineticEnergy(G4double e) |
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[819] | 160 | { |
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[961] | 161 | lowestKinEnergy = e; |
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[819] | 162 | } |
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| 163 | |
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| 164 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 165 | |
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[961] | 166 | inline |
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| 167 | void G4MuBremsstrahlungModel::SetParticle(const G4ParticleDefinition* p) |
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[819] | 168 | { |
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[961] | 169 | if(!particle) { |
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| 170 | particle = p; |
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| 171 | mass = particle->GetPDGMass(); |
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| 172 | rmass=mass/electron_mass_c2 ; |
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| 173 | cc=classic_electr_radius/rmass ; |
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| 174 | coeff= 16.*fine_structure_const*cc*cc/3. ; |
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| 175 | } |
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[819] | 176 | } |
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| 177 | |
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| 178 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 179 | |
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| 180 | #endif |
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