| 1 | //
|
|---|
| 2 | // ********************************************************************
|
|---|
| 3 | // * License and Disclaimer *
|
|---|
| 4 | // * *
|
|---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
|
|---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
|
|---|
| 7 | // * conditions of the Geant4 Software License, included in the file *
|
|---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
|
|---|
| 9 | // * include a list of copyright holders. *
|
|---|
| 10 | // * *
|
|---|
| 11 | // * Neither the authors of this software system, nor their employing *
|
|---|
| 12 | // * institutes,nor the agencies providing financial support for this *
|
|---|
| 13 | // * work make any representation or warranty, express or implied, *
|
|---|
| 14 | // * regarding this software system or assume any liability for its *
|
|---|
| 15 | // * use. Please see the license in the file LICENSE and URL above *
|
|---|
| 16 | // * for the full disclaimer and the limitation of liability. *
|
|---|
| 17 | // * *
|
|---|
| 18 | // * This code implementation is the result of the scientific and *
|
|---|
| 19 | // * technical work of the GEANT4 collaboration. *
|
|---|
| 20 | // * By using, copying, modifying or distributing the software (or *
|
|---|
| 21 | // * any work based on the software) you agree to acknowledge its *
|
|---|
| 22 | // * use in resulting scientific publications, and indicate your *
|
|---|
| 23 | // * acceptance of all terms of the Geant4 Software license. *
|
|---|
| 24 | // ********************************************************************
|
|---|
| 25 | //
|
|---|
| 26 | // G4NeutronCaptureAtRest physics process
|
|---|
| 27 | // Larry Felawka (TRIUMF), April 1998
|
|---|
| 28 | //---------------------------------------------------------------------
|
|---|
| 29 |
|
|---|
| 30 | #ifndef G4NeutronCaptureAtRest_h
|
|---|
| 31 | #define G4NeutronCaptureAtRest_h 1
|
|---|
| 32 |
|
|---|
| 33 | // Class Description:
|
|---|
| 34 | //
|
|---|
| 35 | // Process for capture of neutrons at rest.
|
|---|
| 36 | // To be used in your physics list in case you need this physics.
|
|---|
| 37 |
|
|---|
| 38 |
|
|---|
| 39 | #include "globals.hh"
|
|---|
| 40 | #include "Randomize.hh"
|
|---|
| 41 | #include "G4VRestProcess.hh"
|
|---|
| 42 | #include "G4VParticleChange.hh"
|
|---|
| 43 | #include "G4ParticleDefinition.hh"
|
|---|
| 44 | #include "G4GHEKinematicsVector.hh"
|
|---|
| 45 |
|
|---|
| 46 | class G4NeutronCaptureAtRest : public G4VRestProcess
|
|---|
| 47 |
|
|---|
| 48 | {
|
|---|
| 49 | private:
|
|---|
| 50 | // hide assignment operator as private
|
|---|
| 51 | G4NeutronCaptureAtRest& operator=(const G4NeutronCaptureAtRest &right);
|
|---|
| 52 | G4NeutronCaptureAtRest(const G4NeutronCaptureAtRest& );
|
|---|
| 53 |
|
|---|
| 54 | public:
|
|---|
| 55 |
|
|---|
| 56 | G4NeutronCaptureAtRest(const G4String& processName ="NeutronCaptureAtRest",
|
|---|
| 57 | G4ProcessType aType = fHadronic );
|
|---|
| 58 |
|
|---|
| 59 | ~G4NeutronCaptureAtRest();
|
|---|
| 60 |
|
|---|
| 61 | G4bool IsApplicable(const G4ParticleDefinition&);
|
|---|
| 62 |
|
|---|
| 63 | // null physics table
|
|---|
| 64 | void BuildPhysicsTable(const G4ParticleDefinition&){}
|
|---|
| 65 |
|
|---|
| 66 | G4double AtRestGetPhysicalInteractionLength(const G4Track&,
|
|---|
| 67 | G4ForceCondition*);
|
|---|
| 68 |
|
|---|
| 69 | // zero mean lifetime
|
|---|
| 70 | G4double GetMeanLifeTime(const G4Track& ,
|
|---|
| 71 | G4ForceCondition* ) {return 0.0;}
|
|---|
| 72 |
|
|---|
| 73 | G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&);
|
|---|
| 74 |
|
|---|
| 75 | // return number of secondaries produced
|
|---|
| 76 | G4int GetNumberOfSecondaries();
|
|---|
| 77 |
|
|---|
| 78 | // pointer to array containg kinematics of secondaries
|
|---|
| 79 | G4GHEKinematicsVector* GetSecondaryKinematics();
|
|---|
| 80 |
|
|---|
| 81 | private:
|
|---|
| 82 |
|
|---|
| 83 | void GenerateSecondaries();
|
|---|
| 84 | void Normal( G4float* );
|
|---|
| 85 | void NeutronCapture( G4int* );
|
|---|
| 86 | G4double AtomAs( G4float, G4float );
|
|---|
| 87 |
|
|---|
| 88 | private:
|
|---|
| 89 |
|
|---|
| 90 | // global time-of-flight of stopped hadron
|
|---|
| 91 | G4float globalTime;
|
|---|
| 92 |
|
|---|
| 93 | // atomic mass of target nucleus
|
|---|
| 94 | G4float targetAtomicMass;
|
|---|
| 95 |
|
|---|
| 96 | // charge of target nucleus
|
|---|
| 97 | G4float targetCharge;
|
|---|
| 98 |
|
|---|
| 99 | G4GHEKinematicsVector* pv;
|
|---|
| 100 | G4GHEKinematicsVector* eve;
|
|---|
| 101 | G4GHEKinematicsVector* gkin;
|
|---|
| 102 |
|
|---|
| 103 | G4int ngkine;
|
|---|
| 104 |
|
|---|
| 105 | G4int ntot;
|
|---|
| 106 | G4GHEKinematicsVector result;
|
|---|
| 107 |
|
|---|
| 108 | G4float massProton;
|
|---|
| 109 | G4float massNeutron;
|
|---|
| 110 | G4float massElectron;
|
|---|
| 111 | G4float massDeuteron;
|
|---|
| 112 | G4float massAlpha;
|
|---|
| 113 |
|
|---|
| 114 | G4ParticleDefinition* pdefGamma;
|
|---|
| 115 | G4ParticleDefinition* pdefNeutron;
|
|---|
| 116 |
|
|---|
| 117 | };
|
|---|
| 118 |
|
|---|
| 119 | #endif
|
|---|
| 120 |
|
|---|
