| 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 | // File name: G4PiMinusAbsorptionAtRest.hh
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| 27 | //
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| 28 | // Author: Maria Grazia Pia (pia@genova.infn.it)
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| 29 | //
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| 30 | // Creation date: 9 May 1998
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| 31 | //
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| 32 | // -------------------------------------------------------------------
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| 33 |
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| 34 | #ifndef G4PIMINUSABSORPTIONATREST_HH
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| 35 | #define G4PIMINUSABSORPTIONATREST_HH
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| 36 |
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| 37 | // Class Description:
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| 38 | //
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| 39 | // Alternative Process for absorption of pi- at rest.
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| 40 | // To be used in your physics list in case you need this physics.
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| 41 |
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| 42 |
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| 43 | #include "globals.hh"
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| 44 | #include "G4VRestProcess.hh"
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| 45 | #include "G4ParticleTypes.hh"
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| 46 | #include "G4PiMinusStopMaterial.hh"
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| 47 | #include "G4PiMinusStopAbsorption.hh"
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| 48 | #include "G4StopDeexcitation.hh"
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| 49 | #include "G4StopDeexcitationAlgorithm.hh"
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| 50 | #include "G4HadronicProcessType.hh"
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| 51 |
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| 52 | class G4DynamicParticle;
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| 53 |
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| 54 | class G4PiMinusAbsorptionAtRest : public G4VRestProcess
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| 55 | {
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| 56 |
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| 57 | private:
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| 58 |
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| 59 | // Hide assignment operator as private
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| 60 | G4PiMinusAbsorptionAtRest& operator=(const G4PiMinusAbsorptionAtRest &right);
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| 61 |
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| 62 | // Copy constructor
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| 63 | G4PiMinusAbsorptionAtRest(const G4PiMinusAbsorptionAtRest& );
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| 64 |
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| 65 | public:
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| 66 |
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| 67 | // Constructor
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| 68 | G4PiMinusAbsorptionAtRest(const G4String& processName ="PiMinusAbsorptionAtRest",
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| 69 | G4ProcessType aType = fHadronic );
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| 70 |
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| 71 | // Destructor
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| 72 | ~G4PiMinusAbsorptionAtRest();
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| 73 |
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| 74 | G4bool IsApplicable(const G4ParticleDefinition& particle)
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| 75 | { return ( particle == *(G4PionMinus::PionMinus()) ); }
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| 76 |
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| 77 | G4VParticleChange* AtRestDoIt(const G4Track& aTrack, const G4Step& aStep);
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| 78 |
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| 79 | void SetDeexcitationAlgorithm(G4int index);
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| 80 |
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| 81 | protected:
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| 82 |
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| 83 | // zero mean lifetime
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| 84 | G4double GetMeanLifeTime(const G4Track& aTrack,
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| 85 | G4ForceCondition* )
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| 86 | {
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| 87 | G4double result = 0;
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| 88 | if(aTrack.GetMaterial()->GetNumberOfElements() == 1)
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| 89 | if(aTrack.GetMaterial()->GetZ()<1.5) result = DBL_MAX;
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| 90 | return result;
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| 91 | }
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| 92 | private:
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| 93 |
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| 94 | // G4PiMinusStopAbsorption* _stopAbsorption;
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| 95 | // G4StopDeexcitation* _stopDeexcitation;
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| 96 | G4int _indexDeexcitation;
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| 97 |
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| 98 | G4PiMinusStopMaterial* LoadAlgorithm(int Z);
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| 99 | G4StopDeexcitationAlgorithm* LoadNucleusAlgorithm();
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| 100 | };
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| 101 |
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| 102 |
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| 103 | #endif
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| 104 |
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