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: G4Generator2BS.hh,v 1.5 2010/10/14 14:00:29 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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28 | // |
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29 | // ------------------------------------------------------------------- |
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30 | // |
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31 | // GEANT4 Class file |
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32 | // |
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33 | // |
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34 | // File name: G4Generator2BS |
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35 | // |
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36 | // Author: Andreia Trindade (andreia@lip.pt) |
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37 | // Pedro Rodrigues (psilva@lip.pt) |
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38 | // Luis Peralta (luis@lip.pt) |
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39 | // |
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40 | // Creation date: 2 June 2003 |
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41 | // |
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42 | // Modifications: |
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43 | // 02 Jun 2003 First implementation acording with new design |
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44 | // 12 Oct 2010 V.Ivanchenko moved RejectionFunction inline |
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45 | // |
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46 | // |
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47 | // Class Description: |
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48 | // |
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49 | // Concrete class for Bremsstrahlung Angular Distribution Generation |
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50 | // 2BS Distribution |
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51 | // |
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52 | |
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53 | // ------------------------------------------------------------------- |
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54 | // |
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55 | |
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56 | #ifndef G4Generator2BS_h |
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57 | #define G4Generator2BS_h 1 |
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58 | |
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59 | #include "G4ios.hh" |
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60 | #include "globals.hh" |
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61 | #include "G4VBremAngularDistribution.hh" |
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62 | |
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63 | class G4Pow; |
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64 | |
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65 | class G4Generator2BS : public G4VBremAngularDistribution |
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66 | { |
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67 | |
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68 | public: |
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69 | |
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70 | G4Generator2BS(const G4String& name=""); |
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71 | |
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72 | virtual ~G4Generator2BS(); |
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73 | |
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74 | G4double PolarAngle(const G4double initial_energy, |
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75 | const G4double final_energy, |
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76 | const G4int Z); |
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77 | |
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78 | void PrintGeneratorInformation() const; |
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79 | |
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80 | protected: |
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81 | |
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82 | inline G4double RejectionFunction(G4double value) const; |
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83 | |
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84 | private: |
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85 | |
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86 | G4double z; |
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87 | G4double rejection_argument1, rejection_argument2, rejection_argument3; |
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88 | G4double EnergyRatio; |
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89 | |
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90 | G4Pow* g4pow; |
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91 | |
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92 | // hide assignment operator |
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93 | G4Generator2BS & operator=(const G4Generator2BS &right); |
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94 | G4Generator2BS(const G4Generator2BS&); |
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95 | |
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96 | }; |
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97 | |
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98 | inline G4double G4Generator2BS::RejectionFunction(G4double value) const |
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99 | { |
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100 | G4double argument = (1+value)*(1+value); |
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101 | return (4+std::log(rejection_argument3+(z/argument)))* |
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102 | ((4*EnergyRatio*value/argument)-rejection_argument1)+rejection_argument2; |
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103 | } |
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104 | |
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105 | #endif |
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106 | |
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