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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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 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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28 | // |
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29 | // |
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30 | // GEANT4 physics class: G4PhotoNuclearCrossSection -- header file |
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31 | // Created: M.V. Kossov, CERN/ITEP(Moscow), 10-OCT-01 |
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32 | // The last update: M.V. Kossov, CERN/ITEP (Moscow) 17-May-02 |
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33 | // |
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34 | |
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35 | #ifndef G4PhotoNuclearCrossSection_h |
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36 | #define G4PhotoNuclearCrossSection_h 1 |
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37 | |
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38 | #include "G4VCrossSectionDataSet.hh" |
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39 | #include "G4DynamicParticle.hh" |
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40 | #include "G4Element.hh" |
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41 | #include "G4ParticleTable.hh" |
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42 | #include "G4NucleiProperties.hh" |
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43 | #include <vector> |
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44 | |
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45 | class G4PhotoNuclearCrossSection : public G4VCrossSectionDataSet |
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46 | { |
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47 | public: |
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48 | |
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49 | G4PhotoNuclearCrossSection(); |
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50 | virtual ~G4PhotoNuclearCrossSection(); |
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51 | |
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52 | |
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53 | G4bool IsApplicable(const G4DynamicParticle* particle, const G4Element* ) |
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54 | { |
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55 | return IsZAApplicable(particle, 0, 0); |
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56 | } |
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57 | |
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58 | G4bool IsZAApplicable(const G4DynamicParticle* particle, |
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59 | G4double /*ZZ*/, G4double /*AA*/) |
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60 | { |
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61 | G4bool result = false; |
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62 | if( particle->GetDefinition()->GetPDGEncoding()==22) result = true; |
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63 | return result; |
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64 | } |
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65 | |
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66 | |
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67 | G4double GetCrossSection(const G4DynamicParticle* particle, |
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68 | const G4Element* element, G4double temp = 0.); |
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69 | |
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70 | G4double GetIsoZACrossSection(const G4DynamicParticle* particle, |
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71 | G4double ZZ, G4double AA, |
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72 | G4double /*aTemperature*/); |
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73 | |
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74 | |
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75 | void BuildPhysicsTable(const G4ParticleDefinition&) {} |
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76 | |
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77 | void DumpPhysicsTable(const G4ParticleDefinition&) {} |
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78 | |
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79 | private: |
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80 | G4int GetFunctions(G4double a, G4double* y, G4double* z); |
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81 | G4double EquLinearFit(G4double X, G4int N,const G4double X0,const G4double XD, const G4double* Y); |
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82 | G4double ThresholdEnergy(G4int Z, G4int N); |
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83 | |
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84 | // Body |
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85 | private: |
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86 | static G4int lastN; // The last N of calculated nucleus |
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87 | static G4int lastZ; // The last Z of calculated nucleus |
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88 | static G4double lastSig; // Last value of the Cross Section |
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89 | static G4double* lastGDR; // Pointer to the last array of GDR cross sections |
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90 | static G4double* lastHEN; // Pointer to the last array of HEn cross sections |
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91 | static G4double lastE; // Last used in the cross section Energy |
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92 | static G4double lastTH; // Last value of the Energy Threshold (A-dependent) |
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93 | static G4double lastSP; // Last value of the ShadowingPomeron (A-dependent) |
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94 | |
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95 | static std::vector <G4double*> GDR; // Vector of pointers to the GDRPhotonuclearCrossSection |
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96 | static std::vector <G4double*> HEN; // Vector of pointers to the HighEnPhotonuclearCrossSect |
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97 | |
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98 | }; |
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99 | |
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100 | #endif |
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