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Geant4/processes/electromagnetic/standard/src/G4GammaConversion.cc

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Differences between /processes/electromagnetic/standard/src/G4GammaConversion.cc (Version 11.3.0) and /processes/electromagnetic/standard/src/G4GammaConversion.cc (Version 9.0)


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 25 //                                                 25 //
                                                   >>  26 // $Id: G4GammaConversion.cc,v 1.27 2006/09/14 10:27:19 maire Exp $
                                                   >>  27 // GEANT4 tag $Name: geant4-09-00 $
 26 //                                                 28 //
 27 //                                                 29 // 
 28 //------------------ G4GammaConversion physics     30 //------------------ G4GammaConversion physics process -------------------------
 29 //                   by Michel Maire, 24 May 1     31 //                   by Michel Maire, 24 May 1996
 30 //                                                 32 //
 31 // Modified by Michel Maire and Vladimir Ivanc <<  33 // 11-06-96 Added SelectRandomAtom() method, M.Maire
 32 //                                             <<  34 // 21-06-96 SetCuts implementation, M.Maire
                                                   >>  35 // 24-06-96 simplification in ComputeCrossSectionPerAtom, M.Maire
                                                   >>  36 // 24-06-96 in DoIt : change the particleType stuff, M.Maire
                                                   >>  37 // 25-06-96 modification in the generation of the teta angle, M.Maire
                                                   >>  38 // 16-09-96 minors optimisations in DoIt. Thanks to P.Urban
                                                   >>  39 //          dynamical array PartialSumSigma
                                                   >>  40 // 13-12-96 fast sampling of epsil below 2 MeV, L.Urban
                                                   >>  41 // 14-01-97 crossection table + meanfreepath table.
                                                   >>  42 //          PartialSumSigma removed, M.Maire
                                                   >>  43 // 14-01-97 in DoIt the positron is always created, even with Ekine=0,
                                                   >>  44 //          for further annihilation, M.Maire
                                                   >>  45 // 14-03-97 new Physics scheme for geant4alpha, M.Maire
                                                   >>  46 // 28-03-97 protection in BuildPhysicsTable, M.Maire
                                                   >>  47 // 19-06-97 correction in ComputeCrossSectionPerAtom, L.Urban
                                                   >>  48 // 04-06-98 in DoIt, secondary production condition:
                                                   >>  49 //            range>std::min(threshold,safety)
                                                   >>  50 // 13-08-98 new methods SetBining() PrintInfo()
                                                   >>  51 // 28-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
                                                   >>  52 // 11-07-01 PostStepDoIt - sampling epsil: power(rndm,0.333333)
                                                   >>  53 // 13-07-01 DoIt: suppression of production cut for the (e-,e+) (mma)
                                                   >>  54 // 06-08-01 new methods Store/Retrieve PhysicsTable (mma)
                                                   >>  55 // 06-08-01 BuildThePhysicsTable() called from constructor (mma)
                                                   >>  56 // 17-09-01 migration of Materials to pure STL (mma)
                                                   >>  57 // 20-09-01 DoIt: fminimalEnergy = 1*eV (mma)
                                                   >>  58 // 01-10-01 come back to BuildPhysicsTable(const G4ParticleDefinition&)
                                                   >>  59 // 11-01-02 ComputeCrossSection: correction of extrapolation below EnergyLimit
                                                   >>  60 // 21-03-02 DoIt: correction of the e+e- angular distribution (bug 363) mma
                                                   >>  61 // 08-11-04 Remove of Store/Retrieve tables (V.Ivantchenko)
                                                   >>  62 // 19-04-05 Migrate to model interface and inherit 
                                                   >>  63 //          from G4VEmProcess (V.Ivanchenko) 
                                                   >>  64 // 04-05-05, Make class to be default (V.Ivanchenko)
                                                   >>  65 // 09-08-06, add SetModel(G4VEmModel*) (mma)
                                                   >>  66 // 12-09-06, move SetModel(G4VEmModel*) in G4VEmProcess (mma)
 33 // -------------------------------------------     67 // -----------------------------------------------------------------------------
 34                                                    68 
 35 #include "G4GammaConversion.hh"                    69 #include "G4GammaConversion.hh"
 36 #include "G4PhysicalConstants.hh"              <<  70 #include "G4BetheHeitlerModel.hh"
 37 #include "G4SystemOfUnits.hh"                  << 
 38 #include "G4PairProductionRelModel.hh"         << 
 39 #include "G4Electron.hh"                           71 #include "G4Electron.hh"
 40 #include "G4EmParameters.hh"                   << 
 41                                                    72 
 42 //....oooOO0OOooo........oooOO0OOooo........oo     73 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 43                                                    74 
                                                   >>  75 using namespace std;
                                                   >>  76 
 44 G4GammaConversion::G4GammaConversion(const G4S     77 G4GammaConversion::G4GammaConversion(const G4String& processName,
 45   G4ProcessType type):G4VEmProcess (processNam <<  78   G4ProcessType type):G4VEmProcess (processName, type),
                                                   >>  79     isInitialised(false)
 46 {                                                  80 {
 47   SetMinKinEnergy(2.0*CLHEP::electron_mass_c2) <<  81   SetLambdaBinning(100);
 48   SetProcessSubType(fGammaConversion);         <<  82   SetMinKinEnergy(2.0*electron_mass_c2);
 49   SetStartFromNullFlag(true);                  <<  83   SetMaxKinEnergy(100.0*GeV);
 50   SetBuildTableFlag(true);                     << 
 51   SetSecondaryParticle(G4Electron::Electron()) << 
 52   SetLambdaBinning(220);                       << 
 53 }                                                  84 }
 54                                                    85 
 55 //....oooOO0OOooo........oooOO0OOooo........oo     86 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 56                                                    87  
 57 G4GammaConversion::~G4GammaConversion() = defa <<  88 G4GammaConversion::~G4GammaConversion()
 58                                                <<  89 {}
 59 //....oooOO0OOooo........oooOO0OOooo........oo << 
 60                                                << 
 61 G4bool G4GammaConversion::IsApplicable(const G << 
 62 {                                              << 
 63   return (&p == G4Gamma::Gamma());             << 
 64 }                                              << 
 65                                                    90 
 66 //....oooOO0OOooo........oooOO0OOooo........oo     91 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
 67                                                    92 
 68 void G4GammaConversion::InitialiseProcess(cons     93 void G4GammaConversion::InitialiseProcess(const G4ParticleDefinition*)
 69 {                                                  94 {
 70   if(!isInitialised) {                             95   if(!isInitialised) {
 71     isInitialised = true;                          96     isInitialised = true;
 72     G4EmParameters* param = G4EmParameters::In <<  97     SetBuildTableFlag(true);
 73     G4double emin = std::max(param->MinKinEner <<  98     SetSecondaryParticle(G4Electron::Electron());
 74     G4double emax = param->MaxKinEnergy();     <<  99     G4double emin = max(MinKinEnergy(), 2.0*electron_mass_c2);
 75                                                << 
 76     SetMinKinEnergy(emin);                        100     SetMinKinEnergy(emin);
 77                                                << 101     G4double emax = MaxKinEnergy();
 78     if(nullptr == EmModel(0)) { SetEmModel(new << 102     if(!Model()) SetModel(new G4BetheHeitlerModel);
 79     EmModel(0)->SetLowEnergyLimit(emin);       << 103     Model()->SetLowEnergyLimit(emin);
 80     EmModel(0)->SetHighEnergyLimit(emax);      << 104     Model()->SetHighEnergyLimit(emax);
 81     AddEmModel(1, EmModel(0));                 << 105     AddEmModel(1, Model());
 82   }                                               106   } 
 83 }                                                 107 }
 84                                                   108 
 85 //....oooOO0OOooo........oooOO0OOooo........oo << 
 86                                                << 
 87 G4double G4GammaConversion::MinPrimaryEnergy(c << 
 88                const G4Material*)              << 
 89 {                                              << 
 90   return 2*CLHEP::electron_mass_c2;            << 
 91 }                                              << 
 92                                                << 
 93 //....oooOO0OOooo........oooOO0OOooo........oo    109 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 94                                                   110 
 95 void G4GammaConversion::ProcessDescription(std << 111 void G4GammaConversion::PrintInfo()
 96 {                                                 112 {
 97   out << "  Gamma conversion";                 << 113   G4cout
 98   G4VEmProcess::ProcessDescription(out);       << 114     << " Total cross sections has a good parametrisation" 
 99 }                                              << 115     << " from 1.5 MeV to 100 GeV for all Z;"
                                                   >> 116     << "\n      sampling secondary e+e- according "
                                                   >> 117     << Model()->GetName() << " model"
                                                   >> 118     << G4endl;
                                                   >> 119 }         
100                                                   120 
101 //....oooOO0OOooo........oooOO0OOooo........oo << 121 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
102                                                   122