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>> 26 // $Id: G4DeltaAngleFreeScat.cc 68380 2013-03-22 18:39:29Z vnivanch $
26 // 27 //
27 // ------------------------------------------- 28 // -------------------------------------------------------------------
28 // 29 //
29 // GEANT4 Class file 30 // GEANT4 Class file
30 // 31 //
31 // 32 //
32 // File name: G4DeltaAngleFreeScat 33 // File name: G4DeltaAngleFreeScat
33 // 34 //
34 // Author: Vladimir Ivantcheko 35 // Author: Vladimir Ivantcheko
35 // 36 //
36 // Creation date: 23 August 2013 37 // Creation date: 23 August 2013
37 // 38 //
38 // Modifications: 39 // Modifications:
39 // 40 //
40 // Class Description: 41 // Class Description:
41 // 42 //
42 // Delta-electron Angular Distribution Generat 43 // Delta-electron Angular Distribution Generation
43 // 44 //
44 // Class Description: End 45 // Class Description: End
45 // 46 //
46 // ------------------------------------------- 47 // -------------------------------------------------------------------
47 // 48 //
48 49
49 #include "G4DeltaAngleFreeScat.hh" 50 #include "G4DeltaAngleFreeScat.hh"
50 #include "G4PhysicalConstants.hh" 51 #include "G4PhysicalConstants.hh"
51 #include "Randomize.hh" 52 #include "Randomize.hh"
52 53
53 using namespace std; 54 using namespace std;
54 55
55 G4DeltaAngleFreeScat::G4DeltaAngleFreeScat(con 56 G4DeltaAngleFreeScat::G4DeltaAngleFreeScat(const G4String&)
56 : G4VEmAngularDistribution("deltaFree") 57 : G4VEmAngularDistribution("deltaFree")
57 {} 58 {}
58 59
59 G4DeltaAngleFreeScat::~G4DeltaAngleFreeScat() << 60 G4DeltaAngleFreeScat::~G4DeltaAngleFreeScat()
>> 61 {}
60 62
61 G4ThreeVector& 63 G4ThreeVector&
62 G4DeltaAngleFreeScat::SampleDirection(const G4 64 G4DeltaAngleFreeScat::SampleDirection(const G4DynamicParticle* dp,
63 G4double kinEnergyFinal, G4int, 65 G4double kinEnergyFinal, G4int,
64 const G4Material*) 66 const G4Material*)
65 { 67 {
66 G4double deltaMomentum = 68 G4double deltaMomentum =
67 sqrt(kinEnergyFinal*(kinEnergyFinal + 2*el 69 sqrt(kinEnergyFinal*(kinEnergyFinal + 2*electron_mass_c2));
68 70
69 G4double costet = kinEnergyFinal*(dp->GetTot 71 G4double costet = kinEnergyFinal*(dp->GetTotalEnergy() + electron_mass_c2) /
70 (deltaMomentum * dp->GetTotalMomentum()); 72 (deltaMomentum * dp->GetTotalMomentum());
71 73
72 G4double phi = G4UniformRand()*twopi; 74 G4double phi = G4UniformRand()*twopi;
73 G4double sintet = sqrt((1 - costet)*(1 + cos 75 G4double sintet = sqrt((1 - costet)*(1 + costet));
74 76
75 fLocalDirection.set(sintet*cos(phi), sintet* 77 fLocalDirection.set(sintet*cos(phi), sintet*sin(phi), costet);
76 fLocalDirection.rotateUz(dp->GetMomentumDire 78 fLocalDirection.rotateUz(dp->GetMomentumDirection());
77 79
78 return fLocalDirection; 80 return fLocalDirection;
79 } 81 }
80 82
81 void G4DeltaAngleFreeScat::PrintGeneratorInfor 83 void G4DeltaAngleFreeScat::PrintGeneratorInformation() const
82 {} 84 {}
83 85