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25 // 25 //
26 // 26 //
27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class file 29 // GEANT4 Class file
30 // 30 //
31 // 31 //
32 // File name: G4DNARuddAngle 32 // File name: G4DNARuddAngle
33 // 33 //
34 // Author: Vladimir Ivantcheko 34 // Author: Vladimir Ivantcheko
35 // 35 //
36 // Creation date: 23 August 2013 36 // Creation date: 23 August 2013
37 // 37 //
38 // Modifications: 38 // Modifications:
39 // 39 //
40 // Class Description: 40 // Class Description:
41 // 41 //
42 // Delta-electron Angular Distribution Generat 42 // Delta-electron Angular Distribution Generation
43 // 43 //
44 // Class Description: End 44 // Class Description: End
45 // 45 //
46 // ------------------------------------------- 46 // -------------------------------------------------------------------
47 // 47 //
48 48
49 #include "G4DNARuddAngle.hh" 49 #include "G4DNARuddAngle.hh"
50 #include "G4PhysicalConstants.hh" 50 #include "G4PhysicalConstants.hh"
51 #include "Randomize.hh" 51 #include "Randomize.hh"
52 #include "G4ParticleDefinition.hh" 52 #include "G4ParticleDefinition.hh"
53 #include "G4Electron.hh" 53 #include "G4Electron.hh"
54 #include "G4SystemOfUnits.hh" 54 #include "G4SystemOfUnits.hh"
55 55
56 using namespace std; 56 using namespace std;
57 57
58 G4DNARuddAngle::G4DNARuddAngle(const G4String& 58 G4DNARuddAngle::G4DNARuddAngle(const G4String&)
59 : G4VEmAngularDistribution("deltaRudd") 59 : G4VEmAngularDistribution("deltaRudd")
60 { 60 {
61 fElectron = G4Electron::Electron(); 61 fElectron = G4Electron::Electron();
62 } 62 }
63 63
64 G4DNARuddAngle::~G4DNARuddAngle() 64 G4DNARuddAngle::~G4DNARuddAngle()
65 = default; << 65 {}
66 66
67 G4ThreeVector& 67 G4ThreeVector&
68 G4DNARuddAngle::SampleDirectionForShell(const 68 G4DNARuddAngle::SampleDirectionForShell(const G4DynamicParticle* dp,
69 G4double secKinetic, G4int, 69 G4double secKinetic, G4int,
70 G4int, 70 G4int,
71 const G4Material*) 71 const G4Material*)
72 { 72 {
73 G4double k = dp->GetKineticEnergy(); 73 G4double k = dp->GetKineticEnergy();
74 G4double cosTheta = 1.0; 74 G4double cosTheta = 1.0;
75 75
76 const G4ParticleDefinition* particle = dp->G 76 const G4ParticleDefinition* particle = dp->GetDefinition();
77 G4double mass = particle->GetPDGMass(); 77 G4double mass = particle->GetPDGMass();
78 78
79 G4double maximumEnergyTransfer = k; 79 G4double maximumEnergyTransfer = k;
80 if(particle == fElectron) { maximumEnergyTra 80 if(particle == fElectron) { maximumEnergyTransfer *= 0.5; }
81 else if(mass > MeV) { 81 else if(mass > MeV) {
82 G4double ratio = electron_mass_c2/mass; 82 G4double ratio = electron_mass_c2/mass;
83 G4double tau = k/mass; 83 G4double tau = k/mass;
84 maximumEnergyTransfer = 2.0*electron_mass_ 84 maximumEnergyTransfer = 2.0*electron_mass_c2*tau*(tau + 2.) /
85 (1. + 2.0*(tau + 1.)*ratio + ratio*ratio 85 (1. + 2.0*(tau + 1.)*ratio + ratio*ratio);
86 86
87 } 87 }
88 88
89 if (secKinetic>100*eV && secKinetic <= maxim 89 if (secKinetic>100*eV && secKinetic <= maximumEnergyTransfer) {
90 cosTheta = std::sqrt(secKinetic / maximumE 90 cosTheta = std::sqrt(secKinetic / maximumEnergyTransfer);
91 } else { 91 } else {
92 cosTheta = (2.*G4UniformRand())-1.; 92 cosTheta = (2.*G4UniformRand())-1.;
93 } 93 }
94 94
95 G4double sint = sqrt((1.0 - cosTheta)*(1.0 + 95 G4double sint = sqrt((1.0 - cosTheta)*(1.0 + cosTheta));
96 G4double phi = twopi*G4UniformRand(); 96 G4double phi = twopi*G4UniformRand();
97 97
98 fLocalDirection.set(sint*cos(phi), sint*sin( 98 fLocalDirection.set(sint*cos(phi), sint*sin(phi), cosTheta);
99 fLocalDirection.rotateUz(dp->GetMomentumDire 99 fLocalDirection.rotateUz(dp->GetMomentumDirection());
100 100
101 return fLocalDirection; 101 return fLocalDirection;
102 } 102 }
103 103
104 G4ThreeVector& 104 G4ThreeVector&
105 G4DNARuddAngle::SampleDirection(const G4Dynami 105 G4DNARuddAngle::SampleDirection(const G4DynamicParticle* dp,
106 G4double secEkin, G4int Z, 106 G4double secEkin, G4int Z,
107 const G4Material* mat) 107 const G4Material* mat)
108 { 108 {
109 return SampleDirectionForShell(dp, secEkin, 109 return SampleDirectionForShell(dp, secEkin, Z, 0, mat);
110 } 110 }
111 111
112 void G4DNARuddAngle::PrintGeneratorInformation 112 void G4DNARuddAngle::PrintGeneratorInformation() const
113 {} 113 {}
114 114