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 | // ------------------------------------------------------------------- |
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28 | // |
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29 | // GEANT4 Class file |
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30 | // |
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31 | // |
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32 | // File name: G4hBetheBlochModel |
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33 | // |
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34 | // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch) |
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35 | // |
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36 | // Creation date: 20 July 2000 |
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37 | // |
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38 | // Modifications: |
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39 | // 20/07/2000 V.Ivanchenko First implementation |
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40 | // |
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41 | // Class Description: |
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42 | // |
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43 | // Bethe-Bloch ionisation model |
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44 | // Further documentation available from http://www.ge.infn.it/geant4/lowE |
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45 | |
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46 | // ------------------------------------------------------------------- |
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47 | // |
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48 | |
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49 | #ifndef G4hBetheBlochModel_h |
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50 | #define G4hBetheBlochModel_h 1 |
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51 | |
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52 | #include "globals.hh" |
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53 | #include "G4VLowEnergyModel.hh" |
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54 | |
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55 | class G4Material; |
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56 | class G4ParticleDefinition; |
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57 | class G4DynamicParticle; |
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58 | |
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59 | class G4hBetheBlochModel : public G4VLowEnergyModel |
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60 | { |
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61 | |
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62 | public: |
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63 | |
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64 | G4hBetheBlochModel(const G4String& name) ; |
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65 | |
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66 | ~G4hBetheBlochModel() ; |
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67 | |
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68 | G4double TheValue(const G4DynamicParticle* particle, |
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69 | const G4Material* material); |
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70 | |
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71 | G4double TheValue(const G4ParticleDefinition* aParticle, |
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72 | const G4Material* material, |
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73 | G4double kineticEnergy); |
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74 | |
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75 | G4double HighEnergyLimit(const G4ParticleDefinition* aParticle, |
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76 | const G4Material* material) const; |
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77 | |
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78 | G4double LowEnergyLimit(const G4ParticleDefinition* aParticle, |
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79 | const G4Material* material) const; |
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80 | |
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81 | G4double HighEnergyLimit(const G4ParticleDefinition* aParticle) const; |
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82 | |
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83 | G4double LowEnergyLimit(const G4ParticleDefinition* aParticle) const; |
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84 | |
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85 | G4bool IsInCharge(const G4DynamicParticle* particle, |
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86 | const G4Material* material) const; |
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87 | |
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88 | G4bool IsInCharge(const G4ParticleDefinition* aParticle, |
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89 | const G4Material* material) const; |
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90 | |
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91 | protected: |
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92 | |
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93 | private: |
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94 | |
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95 | G4double BetheBlochFormula(const G4Material* material, |
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96 | G4double kineticEnergy, |
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97 | G4double particleMass) const; |
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98 | |
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99 | // Low energy limit of the model |
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100 | G4double lowEnergyLimit; |
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101 | G4double highEnergyLimit; |
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102 | |
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103 | // constants needed for the energy loss calculation |
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104 | |
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105 | const G4double twoln10; |
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106 | const G4double bg2lim; |
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107 | const G4double taulim; // energy to start to switch off shell corrections |
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108 | |
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109 | }; |
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110 | |
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111 | #endif |
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