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25 // 22 //
>> 23 // $Id: G4ComptonScattering.cc,v 1.24 2005/05/04 16:16:12 vnivanch Exp $
>> 24 // GEANT4 tag $Name: geant4-08-00 $
26 // 25 //
27 // 26 //
28 //------------ G4ComptonScattering physics pro 27 //------------ G4ComptonScattering physics process -----------------------------
29 // by Michel Maire, April 19 28 // by Michel Maire, April 1996
30 // 29 //
31 // Modified: Michel Maire and Vladimir Ivanche << 30 // 28-05-96, DoIt() small change in ElecDirection, by M.Maire
32 // << 31 // 10-06-96, simplification in ComputeMicroscopicCrossSection(), by M.Maire
>> 32 // 21-06-96, SetCuts implementation, M.Maire
>> 33 // 13-09-96, small changes in DoIt for better efficiency. Thanks to P.Urban
>> 34 // 06-01-97, crossection table + meanfreepath table, M.Maire
>> 35 // 05-03-97, new Physics scheme, M.Maire
>> 36 // 28-03-97, protection in BuildPhysicsTable, M.Maire
>> 37 // 07-04-98, remove 'tracking cut' of the scattered gamma, MMa
>> 38 // 04-06-98, in DoIt, secondary production condition:
>> 39 // range>std::min(threshold,safety)
>> 40 // 13-08-98, new methods SetBining() PrintInfo()
>> 41 // 15-12-98, cross section=0 below 10 keV
>> 42 // 28-05-01, V.Ivanchenko minor changes to provide ANSI -wall compilation
>> 43 // 13-07-01, DoIt: suppression of production cut for the electron (mma)
>> 44 // 03-08-01, new methods Store/Retrieve PhysicsTable (mma)
>> 45 // 06-08-01, BuildThePhysicsTable() called from constructor (mma)
>> 46 // 17-09-01, migration of Materials to pure STL (mma)
>> 47 // 20-09-01, DoIt: fminimalEnergy = 1*eV (mma)
>> 48 // 01-10-01, come back to BuildPhysicsTable(const G4ParticleDefinition&)
>> 49 // 17-04-02, LowestEnergyLimit = 1*keV
>> 50 // 26-05-04, cross section parametrization improved for low energy :
>> 51 // Egamma <~ 15 keV (Laszlo)
>> 52 // 08-11-04, Remove Store/Retrieve tables (V.Ivanchenko)
>> 53 // 09-03-05 Migrate to model interface and inherit from G4VEmProcess (V.Ivanchenko)
>> 54 // 04-05-05, Make class to be default (V.Ivanchenko)
33 // ------------------------------------------- 55 // -----------------------------------------------------------------------------
34 56
35 #include "G4ComptonScattering.hh" 57 #include "G4ComptonScattering.hh"
36 #include "G4SystemOfUnits.hh" <<
37 #include "G4KleinNishinaModel.hh" <<
38 #include "G4KleinNishinaCompton.hh" 58 #include "G4KleinNishinaCompton.hh"
39 #include "G4Electron.hh" 59 #include "G4Electron.hh"
40 #include "G4EmParameters.hh" <<
41 60
42 //....oooOO0OOooo........oooOO0OOooo........oo 61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
43 62
44 using namespace std; 63 using namespace std;
45 64
46 G4ComptonScattering::G4ComptonScattering(const 65 G4ComptonScattering::G4ComptonScattering(const G4String& processName,
47 G4ProcessType type):G4VEmProcess (processNam << 66 G4ProcessType type):G4VEmProcess (processName, type),
>> 67 isInitialised(false),
>> 68 selectedModel(0),
>> 69 mType(0)
48 { 70 {
49 SetStartFromNullFlag(true); << 71 SetLambdaBinning(90);
50 SetBuildTableFlag(true); << 72 SetMinKinEnergy(0.1*keV);
51 SetSecondaryParticle(G4Electron::Electron()) << 73 SetMaxKinEnergy(100.0*GeV);
52 SetProcessSubType(fComptonScattering); <<
53 SetMinKinEnergyPrim(1*CLHEP::MeV); <<
54 SetSplineFlag(true); <<
55 } 74 }
56 75
57 //....oooOO0OOooo........oooOO0OOooo........oo 76 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58 77
59 G4ComptonScattering::~G4ComptonScattering() = << 78 G4ComptonScattering::~G4ComptonScattering()
60 << 79 {}
61 //....oooOO0OOooo........oooOO0OOooo........oo <<
62 <<
63 G4bool G4ComptonScattering::IsApplicable(const <<
64 { <<
65 return (&p == G4Gamma::Gamma()); <<
66 } <<
67 80
68 //....oooOO0OOooo........oooOO0OOooo........oo 81 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
69 82
70 void G4ComptonScattering::InitialiseProcess(co 83 void G4ComptonScattering::InitialiseProcess(const G4ParticleDefinition*)
71 { 84 {
72 if(!isInitialised) { 85 if(!isInitialised) {
73 isInitialised = true; 86 isInitialised = true;
74 if(nullptr == EmModel(0)) { SetEmModel(new << 87 SetBuildTableFlag(true);
75 G4EmParameters* param = G4EmParameters::In << 88 SetSecondaryParticle(G4Electron::Electron());
76 EmModel(0)->SetLowEnergyLimit(param->MinKi << 89 G4double emin = MinKinEnergy();
77 EmModel(0)->SetHighEnergyLimit(param->MaxK << 90 G4double emax = MaxKinEnergy();
78 AddEmModel(1, EmModel(0)); << 91 if(0 == mType) selectedModel = new G4KleinNishinaCompton();
>> 92 selectedModel->SetLowEnergyLimit(emin);
>> 93 selectedModel->SetHighEnergyLimit(emax);
>> 94 AddEmModel(1, selectedModel);
79 } 95 }
80 } 96 }
81 97
82 //....oooOO0OOooo........oooOO0OOooo........oo 98 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
83 99
84 void G4ComptonScattering::ProcessDescription(s << 100 void G4ComptonScattering::PrintInfo()
85 { 101 {
86 out << " Compton scattering"; << 102 G4cout << " Total cross sections has a good parametrisation"
87 G4VEmProcess::ProcessDescription(out); << 103 << " from 10 KeV to (100/Z) GeV"
>> 104 << "\n Sampling according " << selectedModel->GetName() << " model"
>> 105 << G4endl;
>> 106 }
>> 107
>> 108 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 109
>> 110 void G4ComptonScattering::SetModel(const G4String& s)
>> 111 {
>> 112 if(s == "Klein-Nishina") mType = 0;
88 } 113 }
89 114
90 //....oooOO0OOooo........oooOO0OOooo........oo << 115 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
91 116