| [819] | 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: G4ComptonScattering.cc,v 1.27 2006/09/14 10:27:19 maire Exp $
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| 27 | // GEANT4 tag $Name: geant4-09-01-patch-02 $
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| 28 | //
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| 29 | //
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| 30 | //------------ G4ComptonScattering physics process -----------------------------
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| 31 | // by Michel Maire, April 1996
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| 32 | //
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| 33 | // 28-05-96, DoIt() small change in ElecDirection, by M.Maire
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| 34 | // 10-06-96, simplification in ComputeMicroscopicCrossSection(), by M.Maire
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| 35 | // 21-06-96, SetCuts implementation, M.Maire
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| 36 | // 13-09-96, small changes in DoIt for better efficiency. Thanks to P.Urban
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| 37 | // 06-01-97, crossection table + meanfreepath table, M.Maire
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| 38 | // 05-03-97, new Physics scheme, M.Maire
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| 39 | // 28-03-97, protection in BuildPhysicsTable, M.Maire
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| 40 | // 07-04-98, remove 'tracking cut' of the scattered gamma, MMa
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| 41 | // 04-06-98, in DoIt, secondary production condition:
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| 42 | // range>std::min(threshold,safety)
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| 43 | // 13-08-98, new methods SetBining() PrintInfo()
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| 44 | // 15-12-98, cross section=0 below 10 keV
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| 45 | // 28-05-01, V.Ivanchenko minor changes to provide ANSI -wall compilation
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| 46 | // 13-07-01, DoIt: suppression of production cut for the electron (mma)
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| 47 | // 03-08-01, new methods Store/Retrieve PhysicsTable (mma)
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| 48 | // 06-08-01, BuildThePhysicsTable() called from constructor (mma)
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| 49 | // 17-09-01, migration of Materials to pure STL (mma)
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| 50 | // 20-09-01, DoIt: fminimalEnergy = 1*eV (mma)
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| 51 | // 01-10-01, come back to BuildPhysicsTable(const G4ParticleDefinition&)
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| 52 | // 17-04-02, LowestEnergyLimit = 1*keV
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| 53 | // 26-05-04, cross section parametrization improved for low energy :
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| 54 | // Egamma <~ 15 keV (Laszlo)
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| 55 | // 08-11-04, Remove Store/Retrieve tables (V.Ivanchenko)
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| 56 | // 09-03-05 Migrate to model interface
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| 57 | // and inherit from G4VEmProcess (V.Ivanchenko)
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| 58 | // 04-05-05, Make class to be default (V.Ivanchenko)
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| 59 | // 09-09-06, modify SetModel(G4VEmModel*) (mma)
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| 60 | // 12-09-06, move SetModel(G4VEmModel*) in G4VEmProcess (mma)
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| 61 | //
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| 62 | // -----------------------------------------------------------------------------
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| 63 |
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| 64 | #include "G4ComptonScattering.hh"
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| 65 | #include "G4KleinNishinaCompton.hh"
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| 66 | #include "G4Electron.hh"
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| 67 |
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| 68 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 69 |
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| 70 | using namespace std;
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| 71 |
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| 72 | G4ComptonScattering::G4ComptonScattering(const G4String& processName,
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| 73 | G4ProcessType type):G4VEmProcess (processName, type),
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| 74 | isInitialised(false)
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| 75 | {
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| 76 | SetLambdaBinning(90);
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| 77 | SetMinKinEnergy(0.1*keV);
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| 78 | SetMaxKinEnergy(100.0*GeV);
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| 79 | }
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| 80 |
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| 81 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 82 |
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| 83 | G4ComptonScattering::~G4ComptonScattering()
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| 84 | {}
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| 85 |
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| 86 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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| 87 |
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| 88 | void G4ComptonScattering::InitialiseProcess(const G4ParticleDefinition*)
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| 89 | {
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| 90 | if(!isInitialised) {
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| 91 | isInitialised = true;
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| 92 | SetBuildTableFlag(true);
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| 93 | SetSecondaryParticle(G4Electron::Electron());
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| 94 | G4double emin = MinKinEnergy();
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| 95 | G4double emax = MaxKinEnergy();
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| 96 | if(!Model()) SetModel(new G4KleinNishinaCompton);
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| 97 | Model()->SetLowEnergyLimit(emin);
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| 98 | Model()->SetHighEnergyLimit(emax);
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| 99 | AddEmModel(1, Model());
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| 100 | }
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| 101 | }
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| 102 |
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| 103 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 104 |
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| 105 | void G4ComptonScattering::PrintInfo()
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| 106 | {
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| 107 | G4cout
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| 108 | << " Total cross sections has a good parametrisation"
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| 109 | << " from 10 KeV to (100/Z) GeV"
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| 110 | << "\n Sampling according " << Model()->GetName() << " model"
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| 111 | << G4endl;
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| 112 | }
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| 113 |
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| 114 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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