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25 // 25 //
>> 26 // $Id: G4ComptonScattering.cc,v 1.27 2006/09/14 10:27:19 maire Exp $
>> 27 // GEANT4 tag $Name: geant4-09-01-patch-03 $
26 // 28 //
27 // 29 //
28 //------------ G4ComptonScattering physics pro 30 //------------ G4ComptonScattering physics process -----------------------------
29 // by Michel Maire, April 19 31 // by Michel Maire, April 1996
30 // 32 //
31 // Modified: Michel Maire and Vladimir Ivanche << 33 // 28-05-96, DoIt() small change in ElecDirection, by M.Maire
>> 34 // 10-06-96, simplification in ComputeMicroscopicCrossSection(), by M.Maire
>> 35 // 21-06-96, SetCuts implementation, M.Maire
>> 36 // 13-09-96, small changes in DoIt for better efficiency. Thanks to P.Urban
>> 37 // 06-01-97, crossection table + meanfreepath table, M.Maire
>> 38 // 05-03-97, new Physics scheme, M.Maire
>> 39 // 28-03-97, protection in BuildPhysicsTable, M.Maire
>> 40 // 07-04-98, remove 'tracking cut' of the scattered gamma, MMa
>> 41 // 04-06-98, in DoIt, secondary production condition:
>> 42 // range>std::min(threshold,safety)
>> 43 // 13-08-98, new methods SetBining() PrintInfo()
>> 44 // 15-12-98, cross section=0 below 10 keV
>> 45 // 28-05-01, V.Ivanchenko minor changes to provide ANSI -wall compilation
>> 46 // 13-07-01, DoIt: suppression of production cut for the electron (mma)
>> 47 // 03-08-01, new methods Store/Retrieve PhysicsTable (mma)
>> 48 // 06-08-01, BuildThePhysicsTable() called from constructor (mma)
>> 49 // 17-09-01, migration of Materials to pure STL (mma)
>> 50 // 20-09-01, DoIt: fminimalEnergy = 1*eV (mma)
>> 51 // 01-10-01, come back to BuildPhysicsTable(const G4ParticleDefinition&)
>> 52 // 17-04-02, LowestEnergyLimit = 1*keV
>> 53 // 26-05-04, cross section parametrization improved for low energy :
>> 54 // Egamma <~ 15 keV (Laszlo)
>> 55 // 08-11-04, Remove Store/Retrieve tables (V.Ivanchenko)
>> 56 // 09-03-05 Migrate to model interface
>> 57 // and inherit from G4VEmProcess (V.Ivanchenko)
>> 58 // 04-05-05, Make class to be default (V.Ivanchenko)
>> 59 // 09-09-06, modify SetModel(G4VEmModel*) (mma)
>> 60 // 12-09-06, move SetModel(G4VEmModel*) in G4VEmProcess (mma)
32 // 61 //
33 // ------------------------------------------- 62 // -----------------------------------------------------------------------------
34 63
35 #include "G4ComptonScattering.hh" 64 #include "G4ComptonScattering.hh"
36 #include "G4SystemOfUnits.hh" <<
37 #include "G4KleinNishinaModel.hh" <<
38 #include "G4KleinNishinaCompton.hh" 65 #include "G4KleinNishinaCompton.hh"
39 #include "G4Electron.hh" 66 #include "G4Electron.hh"
40 #include "G4EmParameters.hh" <<
41 67
42 //....oooOO0OOooo........oooOO0OOooo........oo 68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
43 69
44 using namespace std; 70 using namespace std;
45 71
46 G4ComptonScattering::G4ComptonScattering(const 72 G4ComptonScattering::G4ComptonScattering(const G4String& processName,
47 G4ProcessType type):G4VEmProcess (processNam << 73 G4ProcessType type):G4VEmProcess (processName, type),
>> 74 isInitialised(false)
48 { 75 {
49 SetStartFromNullFlag(true); << 76 SetLambdaBinning(90);
50 SetBuildTableFlag(true); << 77 SetMinKinEnergy(0.1*keV);
51 SetSecondaryParticle(G4Electron::Electron()) << 78 SetMaxKinEnergy(100.0*GeV);
52 SetProcessSubType(fComptonScattering); <<
53 SetMinKinEnergyPrim(1*CLHEP::MeV); <<
54 SetSplineFlag(true); <<
55 } 79 }
56 80
57 //....oooOO0OOooo........oooOO0OOooo........oo 81 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58 82
59 G4ComptonScattering::~G4ComptonScattering() = << 83 G4ComptonScattering::~G4ComptonScattering()
60 << 84 {}
61 //....oooOO0OOooo........oooOO0OOooo........oo <<
62 <<
63 G4bool G4ComptonScattering::IsApplicable(const <<
64 { <<
65 return (&p == G4Gamma::Gamma()); <<
66 } <<
67 85
68 //....oooOO0OOooo........oooOO0OOooo........oo 86 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
69 87
70 void G4ComptonScattering::InitialiseProcess(co 88 void G4ComptonScattering::InitialiseProcess(const G4ParticleDefinition*)
71 { 89 {
72 if(!isInitialised) { 90 if(!isInitialised) {
73 isInitialised = true; 91 isInitialised = true;
74 if(nullptr == EmModel(0)) { SetEmModel(new << 92 SetBuildTableFlag(true);
75 G4EmParameters* param = G4EmParameters::In << 93 SetSecondaryParticle(G4Electron::Electron());
76 EmModel(0)->SetLowEnergyLimit(param->MinKi << 94 G4double emin = MinKinEnergy();
77 EmModel(0)->SetHighEnergyLimit(param->MaxK << 95 G4double emax = MaxKinEnergy();
78 AddEmModel(1, EmModel(0)); << 96 if(!Model()) SetModel(new G4KleinNishinaCompton);
>> 97 Model()->SetLowEnergyLimit(emin);
>> 98 Model()->SetHighEnergyLimit(emax);
>> 99 AddEmModel(1, Model());
79 } 100 }
80 } 101 }
81 102
82 //....oooOO0OOooo........oooOO0OOooo........oo 103 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
83 104
84 void G4ComptonScattering::ProcessDescription(s << 105 void G4ComptonScattering::PrintInfo()
85 { 106 {
86 out << " Compton scattering"; << 107 G4cout
87 G4VEmProcess::ProcessDescription(out); << 108 << " Total cross sections has a good parametrisation"
88 } << 109 << " from 10 KeV to (100/Z) GeV"
>> 110 << "\n Sampling according " << Model()->GetName() << " model"
>> 111 << G4endl;
>> 112 }
89 113
90 //....oooOO0OOooo........oooOO0OOooo........oo << 114 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
91 115