[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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[1315] | 26 | // $Id: G4eCoulombScatteringModel.hh,v 1.56 2010/05/27 14:22:05 vnivanch Exp $ |
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| 27 | // GEANT4 tag $Name: geant4-09-04-beta-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: G4eCoulombScatteringModel |
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| 35 | // |
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| 36 | // Author: Vladimir Ivanchenko |
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| 37 | // |
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| 38 | // Creation date: 19.02.2006 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // 01.08.06 V.Ivanchenko extend upper limit of table to TeV and review the |
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| 42 | // logic of building - only elements from G4ElementTable |
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| 43 | // 08.08.06 V.Ivanchenko build internal table in ekin scale, introduce faclim |
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| 44 | // 19.08.06 V.Ivanchenko add inline function ScreeningParameter and |
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| 45 | // make some members protected |
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| 46 | // 09.10.07 V.Ivanchenko reorganized methods, add cut dependence in scattering off e- |
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[961] | 47 | // 09.06.08 V.Ivanchenko add SelectIsotope and sampling of the recoil ion |
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[1196] | 48 | // 17.06.09 C.Consoalndi modified SetupTarget method - remove kinFactor |
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[1315] | 49 | // 27.05.10 V.Ivanchenko added G4WentzelOKandVIxSection class to |
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| 50 | // compute cross sections and sample scattering angle |
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[1196] | 51 | // |
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[819] | 52 | // |
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| 53 | // Class Description: |
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| 54 | // |
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| 55 | // Implementation of eCoulombScattering of pointlike charge particle |
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| 56 | // on Atomic Nucleus for interval of scattering anles in Lab system |
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| 57 | // thetaMin - ThetaMax, nucleus recoil is neglected. |
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| 58 | // The model based on analysis of J.M.Fernandez-Varea et al. |
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| 59 | // NIM B73(1993)447 originated from G.Wentzel Z.Phys. 40(1927)590 with |
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| 60 | // screening parameter from H.A.Bethe Phys. Rev. 89 (1953) 1256. |
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| 61 | // |
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| 62 | |
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| 63 | // ------------------------------------------------------------------- |
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| 64 | // |
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| 65 | |
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| 66 | #ifndef G4eCoulombScatteringModel_h |
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| 67 | #define G4eCoulombScatteringModel_h 1 |
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| 68 | |
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| 69 | #include "G4VEmModel.hh" |
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[1055] | 70 | #include "globals.hh" |
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[1315] | 71 | #include "G4MaterialCutsCouple.hh" |
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| 72 | #include "G4WentzelOKandVIxSection.hh" |
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[819] | 73 | |
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| 74 | class G4ParticleChangeForGamma; |
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| 75 | class G4ParticleDefinition; |
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[1315] | 76 | class G4ParticleTable; |
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| 77 | class G4NistManager; |
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[819] | 78 | |
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| 79 | class G4eCoulombScatteringModel : public G4VEmModel |
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| 80 | { |
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| 81 | |
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| 82 | public: |
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| 83 | |
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[961] | 84 | G4eCoulombScatteringModel(const G4String& nam = "eCoulombScattering"); |
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[819] | 85 | |
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| 86 | virtual ~G4eCoulombScatteringModel(); |
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| 87 | |
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| 88 | virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&); |
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| 89 | |
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| 90 | virtual G4double ComputeCrossSectionPerAtom( |
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| 91 | const G4ParticleDefinition*, |
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| 92 | G4double kinEnergy, |
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| 93 | G4double Z, |
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| 94 | G4double A, |
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| 95 | G4double cut, |
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| 96 | G4double emax); |
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| 97 | |
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| 98 | virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*, |
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| 99 | const G4MaterialCutsCouple*, |
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| 100 | const G4DynamicParticle*, |
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| 101 | G4double tmin, |
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| 102 | G4double maxEnergy); |
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| 103 | |
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[1315] | 104 | // defines low energy limit of the model |
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| 105 | inline void SetLowEnergyLimit(G4double val); |
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| 106 | |
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| 107 | // obsolete method |
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[961] | 108 | inline void SetRecoilThreshold(G4double eth); |
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| 109 | |
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[819] | 110 | protected: |
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| 111 | |
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[961] | 112 | inline void DefineMaterial(const G4MaterialCutsCouple*); |
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| 113 | |
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[819] | 114 | inline void SetupParticle(const G4ParticleDefinition*); |
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| 115 | |
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| 116 | private: |
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| 117 | |
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| 118 | // hide assignment operator |
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| 119 | G4eCoulombScatteringModel & operator=(const G4eCoulombScatteringModel &right); |
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| 120 | G4eCoulombScatteringModel(const G4eCoulombScatteringModel&); |
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| 121 | |
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| 122 | protected: |
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[961] | 123 | |
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[1315] | 124 | G4ParticleTable* theParticleTable; |
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[819] | 125 | G4ParticleChangeForGamma* fParticleChange; |
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[1315] | 126 | G4WentzelOKandVIxSection* wokvi; |
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[819] | 127 | G4NistManager* fNistManager; |
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| 128 | |
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[1196] | 129 | const std::vector<G4double>* pCuts; |
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| 130 | |
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[961] | 131 | const G4MaterialCutsCouple* currentCouple; |
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| 132 | const G4Material* currentMaterial; |
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| 133 | const G4Element* currentElement; |
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| 134 | G4int currentMaterialIndex; |
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| 135 | |
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[819] | 136 | G4double cosThetaMin; |
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| 137 | G4double cosThetaMax; |
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[961] | 138 | G4double cosTetMinNuc; |
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[819] | 139 | G4double cosTetMaxNuc; |
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[961] | 140 | G4double recoilThreshold; |
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[1315] | 141 | G4double elecRatio; |
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| 142 | G4double mass; |
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[819] | 143 | |
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| 144 | // projectile |
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| 145 | const G4ParticleDefinition* particle; |
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[1315] | 146 | const G4ParticleDefinition* theProton; |
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[819] | 147 | |
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[961] | 148 | G4double lowEnergyLimit; |
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[819] | 149 | |
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| 150 | private: |
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| 151 | |
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| 152 | G4bool isInitialised; |
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| 153 | }; |
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| 154 | |
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| 155 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 156 | |
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[961] | 157 | inline |
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| 158 | void G4eCoulombScatteringModel::DefineMaterial(const G4MaterialCutsCouple* cup) |
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| 159 | { |
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| 160 | if(cup != currentCouple) { |
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| 161 | currentCouple = cup; |
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| 162 | currentMaterial = cup->GetMaterial(); |
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| 163 | currentMaterialIndex = currentCouple->GetIndex(); |
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| 164 | } |
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| 165 | } |
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| 166 | |
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| 167 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 168 | |
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[819] | 169 | inline |
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| 170 | void G4eCoulombScatteringModel::SetupParticle(const G4ParticleDefinition* p) |
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| 171 | { |
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| 172 | // Initialise mass and charge |
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| 173 | if(p != particle) { |
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| 174 | particle = p; |
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| 175 | mass = particle->GetPDGMass(); |
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[1315] | 176 | wokvi->SetupParticle(p); |
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[819] | 177 | } |
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| 178 | } |
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| 179 | |
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| 180 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 181 | |
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[1315] | 182 | inline void G4eCoulombScatteringModel::SetLowEnergyLimit(G4double val) |
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[819] | 183 | { |
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[1315] | 184 | lowEnergyLimit = val; |
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[819] | 185 | } |
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| 186 | |
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| 187 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 188 | |
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[961] | 189 | inline void G4eCoulombScatteringModel::SetRecoilThreshold(G4double eth) |
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| 190 | { |
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| 191 | recoilThreshold = eth; |
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| 192 | } |
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| 193 | |
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| 194 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 195 | |
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[819] | 196 | #endif |
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