Gabriele Cosmo
121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// G4NeutronCaptureAtRest physics process
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// Larry Felawka (TRIUMF), April 1998
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//---------------------------------------------------------------------
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#ifndef G4NeutronCaptureAtRest_h
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#define G4NeutronCaptureAtRest_h 1
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// Class Description:
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//
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// Process for capture of neutrons at rest.
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// To be used in your physics list in case you need this physics.
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#include "globals.hh"
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#include "Randomize.hh"
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#include "G4VRestProcess.hh"
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#include "G4VParticleChange.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4GHEKinematicsVector.hh"
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class G4NeutronCaptureAtRest : public G4VRestProcess
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{
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private:
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// hide assignment operator as private
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G4NeutronCaptureAtRest& operator=(const G4NeutronCaptureAtRest &right);
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G4NeutronCaptureAtRest(const G4NeutronCaptureAtRest& );
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public:
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G4NeutronCaptureAtRest(const G4String& processName ="NeutronCaptureAtRest",
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G4ProcessType aType = fHadronic );
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~G4NeutronCaptureAtRest();
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G4bool IsApplicable(const G4ParticleDefinition&);
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// null physics table
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void BuildPhysicsTable(const G4ParticleDefinition&){}
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G4double AtRestGetPhysicalInteractionLength(const G4Track&,
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G4ForceCondition*);
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// zero mean lifetime
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G4double GetMeanLifeTime(const G4Track& ,
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G4ForceCondition* ) {return 0.0;}
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G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&);
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// return number of secondaries produced
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G4int GetNumberOfSecondaries();
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// pointer to array containg kinematics of secondaries
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G4GHEKinematicsVector* GetSecondaryKinematics();
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private:
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void GenerateSecondaries();
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void Normal( G4float* );
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void NeutronCapture( G4int* );
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G4double AtomAs( G4float, G4float );
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private:
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// global time-of-flight of stopped hadron
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G4float globalTime;
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// atomic mass of target nucleus
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G4float targetAtomicMass;
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// charge of target nucleus
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G4float targetCharge;
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G4GHEKinematicsVector* pv;
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G4GHEKinematicsVector* eve;
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G4GHEKinematicsVector* gkin;
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G4int ngkine;
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G4int ntot;
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G4GHEKinematicsVector result;
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G4float massProton;
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G4float massNeutron;
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G4float massElectron;
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G4float massDeuteron;
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G4float massAlpha;
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G4ParticleDefinition* pdefGamma;
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G4ParticleDefinition* pdefNeutron;
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};
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#endif
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