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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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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 | // G4NeutronCaptureAtRest physics process |
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27 | // Larry Felawka (TRIUMF), April 1998 |
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28 | //--------------------------------------------------------------------- |
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29 | |
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30 | #ifndef G4NeutronCaptureAtRest_h |
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31 | #define G4NeutronCaptureAtRest_h 1 |
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32 | |
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33 | // Class Description: |
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34 | // |
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35 | // Process for capture of neutrons at rest. |
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36 | // To be used in your physics list in case you need this physics. |
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37 | |
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38 | |
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39 | #include "globals.hh" |
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40 | #include "Randomize.hh" |
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41 | #include "G4VRestProcess.hh" |
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42 | #include "G4VParticleChange.hh" |
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43 | #include "G4ParticleDefinition.hh" |
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44 | #include "G4GHEKinematicsVector.hh" |
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45 | #include "G4HadronicProcessType.hh" |
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46 | |
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47 | class G4NeutronCaptureAtRest : public G4VRestProcess |
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48 | |
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49 | { |
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50 | private: |
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51 | // hide assignment operator as private |
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52 | G4NeutronCaptureAtRest& operator=(const G4NeutronCaptureAtRest &right); |
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53 | G4NeutronCaptureAtRest(const G4NeutronCaptureAtRest& ); |
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54 | |
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55 | public: |
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56 | |
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57 | G4NeutronCaptureAtRest(const G4String& processName ="NeutronCaptureAtRest", |
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58 | G4ProcessType aType = fHadronic ); |
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59 | |
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60 | ~G4NeutronCaptureAtRest(); |
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61 | |
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62 | G4bool IsApplicable(const G4ParticleDefinition&); |
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63 | |
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64 | void PreparePhysicsTable(const G4ParticleDefinition&); |
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65 | |
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66 | // null physics table |
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67 | void BuildPhysicsTable(const G4ParticleDefinition&); |
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68 | |
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69 | G4double AtRestGetPhysicalInteractionLength(const G4Track&, |
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70 | G4ForceCondition*); |
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71 | |
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72 | // zero mean lifetime |
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73 | G4double GetMeanLifeTime(const G4Track& , |
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74 | G4ForceCondition* ) {return 0.0;} |
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75 | |
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76 | G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&); |
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77 | |
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78 | // return number of secondaries produced |
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79 | G4int GetNumberOfSecondaries(); |
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80 | |
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81 | // pointer to array containg kinematics of secondaries |
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82 | G4GHEKinematicsVector* GetSecondaryKinematics(); |
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83 | |
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84 | private: |
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85 | |
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86 | void GenerateSecondaries(); |
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87 | void Normal( G4float* ); |
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88 | void NeutronCapture( G4int* ); |
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89 | G4double AtomAs( G4float, G4float ); |
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90 | |
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91 | private: |
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92 | |
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93 | // global time-of-flight of stopped hadron |
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94 | G4float globalTime; |
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95 | |
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96 | // atomic mass of target nucleus |
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97 | G4float targetAtomicMass; |
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98 | |
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99 | // charge of target nucleus |
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100 | G4float targetCharge; |
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101 | |
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102 | G4GHEKinematicsVector* pv; |
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103 | G4GHEKinematicsVector* eve; |
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104 | G4GHEKinematicsVector* gkin; |
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105 | |
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106 | G4int ngkine; |
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107 | |
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108 | G4int ntot; |
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109 | G4GHEKinematicsVector result; |
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110 | |
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111 | G4float massProton; |
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112 | G4float massNeutron; |
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113 | G4float massElectron; |
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114 | G4float massDeuteron; |
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115 | G4float massAlpha; |
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116 | |
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117 | G4ParticleDefinition* pdefGamma; |
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118 | G4ParticleDefinition* pdefNeutron; |
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119 | |
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120 | }; |
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121 | |
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122 | #endif |
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123 | |
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