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27 // ------------------------------------------- 27 // -----------------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class file 29 // GEANT4 Class file
30 // 30 //
31 // File name: G4NuclearStopping 31 // File name: G4NuclearStopping
32 // 32 //
33 // Author: Vladimir Ivanchenko 33 // Author: Vladimir Ivanchenko
34 // 34 //
35 // Creation date: 20 July 2009 35 // Creation date: 20 July 2009
36 // 36 //
37 // Modified: 37 // Modified:
38 // 38 //
39 // Warning: this class should be instantiated 39 // Warning: this class should be instantiated after G4ionIonisation
40 // 40 //
41 // ------------------------------------------- 41 // -----------------------------------------------------------------------------
42 // 42 //
43 //....oooOO0OOooo........oooOO0OOooo........oo 43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
44 //....oooOO0OOooo........oooOO0OOooo........oo 44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
45 45
46 #include "G4NuclearStopping.hh" 46 #include "G4NuclearStopping.hh"
47 #include "G4ICRU49NuclearStoppingModel.hh" 47 #include "G4ICRU49NuclearStoppingModel.hh"
48 #include "G4SystemOfUnits.hh" 48 #include "G4SystemOfUnits.hh"
49 #include "G4PhysicalConstants.hh" 49 #include "G4PhysicalConstants.hh"
50 50
51 //....oooOO0OOooo........oooOO0OOooo........oo 51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52 52
53 using namespace std; 53 using namespace std;
54 54
55 G4NuclearStopping::G4NuclearStopping(const G4S 55 G4NuclearStopping::G4NuclearStopping(const G4String& processName)
56 : G4VEmProcess(processName) 56 : G4VEmProcess(processName)
57 { 57 {
58 isInitialized = false; 58 isInitialized = false;
59 SetProcessSubType(fNuclearStopping); 59 SetProcessSubType(fNuclearStopping);
60 SetBuildTableFlag(false); 60 SetBuildTableFlag(false);
61 enableAlongStepDoIt = true; 61 enableAlongStepDoIt = true;
62 enablePostStepDoIt = false; 62 enablePostStepDoIt = false;
63 } 63 }
64 64
65 //....oooOO0OOooo........oooOO0OOooo........oo 65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
66 66
67 G4NuclearStopping::~G4NuclearStopping() = defa << 67 G4NuclearStopping::~G4NuclearStopping()
>> 68 {}
68 69
69 //....oooOO0OOooo........oooOO0OOooo........oo 70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
70 71
71 G4bool G4NuclearStopping::IsApplicable (const 72 G4bool G4NuclearStopping::IsApplicable (const G4ParticleDefinition& p)
72 { 73 {
73 return (p.GetPDGCharge() != 0.0); << 74 return (p.GetPDGCharge() != 0.0 && !p.IsShortLived());
74 } 75 }
75 76
76 //....oooOO0OOooo........oooOO0OOooo........oo 77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
77 78
78 void G4NuclearStopping::InitialiseProcess(cons 79 void G4NuclearStopping::InitialiseProcess(const G4ParticleDefinition*)
79 { 80 {
80 if(!isInitialized) { 81 if(!isInitialized) {
81 isInitialized = true; 82 isInitialized = true;
82 83
83 if(nullptr == EmModel(0)) { << 84 if(!EmModel(0)) { SetEmModel(new G4ICRU49NuclearStoppingModel()); }
84 SetEmModel(new G4ICRU49NuclearStoppingMo <<
85 } <<
86 AddEmModel(1, EmModel()); 85 AddEmModel(1, EmModel());
87 EmModel()->SetActivationHighEnergyLimit(10 86 EmModel()->SetActivationHighEnergyLimit(10*GeV);
88 EmModel()->SetParticleChange(&nParticleCha 87 EmModel()->SetParticleChange(&nParticleChange);
89 } 88 }
90 } 89 }
91 90
92 //....oooOO0OOooo........oooOO0OOooo........oo 91 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
93 92
94 G4double 93 G4double
95 G4NuclearStopping::AlongStepGetPhysicalInterac 94 G4NuclearStopping::AlongStepGetPhysicalInteractionLength(
96 const G4Track&, G4double, G4double, G4dou 95 const G4Track&, G4double, G4double, G4double&, G4GPILSelection* selection)
97 { 96 {
98 *selection = NotCandidateForSelection; 97 *selection = NotCandidateForSelection;
99 return DBL_MAX; 98 return DBL_MAX;
100 } 99 }
101 100
102 //....oooOO0OOooo........oooOO0OOooo........oo 101 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
103 102
104 G4VParticleChange* G4NuclearStopping::AlongSte 103 G4VParticleChange* G4NuclearStopping::AlongStepDoIt(const G4Track& track,
105 const G4Step& step) 104 const G4Step& step)
106 { 105 {
107 nParticleChange.InitializeForAlongStep(track 106 nParticleChange.InitializeForAlongStep(track);
108 107
109 // this line only valid if nuclear stopping 108 // this line only valid if nuclear stopping
110 // is computed after G4ionIonisation process 109 // is computed after G4ionIonisation process
111 nParticleChange.SetProposedCharge(step.GetPo 110 nParticleChange.SetProposedCharge(step.GetPostStepPoint()->GetCharge());
112 111
113 G4double T2 = step.GetPostStepPoint()->GetKi 112 G4double T2 = step.GetPostStepPoint()->GetKineticEnergy();
114 113
115 const G4ParticleDefinition* part = track.Get 114 const G4ParticleDefinition* part = track.GetParticleDefinition();
116 G4double Z = std::abs(part->GetPDGCharge()/e 115 G4double Z = std::abs(part->GetPDGCharge()/eplus);
117 G4double massR = proton_mass_c2/part->GetPDG 116 G4double massR = proton_mass_c2/part->GetPDGMass();
118 117
119 if(T2 > 0.0 && T2*massR < Z*Z*MeV) { 118 if(T2 > 0.0 && T2*massR < Z*Z*MeV) {
120 119
121 G4double length = step.GetStepLength(); 120 G4double length = step.GetStepLength();
122 if(length > 0.0) { 121 if(length > 0.0) {
123 122
124 // primary 123 // primary
125 G4double T1= step.GetPreStepPoint()->Get 124 G4double T1= step.GetPreStepPoint()->GetKineticEnergy();
126 G4double T = 0.5*(T1 + T2); 125 G4double T = 0.5*(T1 + T2);
127 const G4MaterialCutsCouple* couple = tra 126 const G4MaterialCutsCouple* couple = track.GetMaterialCutsCouple();
128 G4double Tscaled = T*massR; 127 G4double Tscaled = T*massR;
129 G4VEmModel* mod = SelectModel(Tscaled, c 128 G4VEmModel* mod = SelectModel(Tscaled, couple->GetIndex());
130 129
131 // sample stopping 130 // sample stopping
132 if(mod->IsActive(Tscaled)) { 131 if(mod->IsActive(Tscaled)) {
133 G4double nloss = 132 G4double nloss =
134 length*mod->ComputeDEDXPerVolume(couple->G 133 length*mod->ComputeDEDXPerVolume(couple->GetMaterial(), part, T);
135 nloss = std::min(nloss, T1); 134 nloss = std::min(nloss, T1);
136 nParticleChange.SetProposedKineticEnergy(T1 135 nParticleChange.SetProposedKineticEnergy(T1 - nloss);
137 nParticleChange.ProposeLocalEnergyDeposit(nl 136 nParticleChange.ProposeLocalEnergyDeposit(nloss);
138 nParticleChange.ProposeNonIonizingEnergyDepo 137 nParticleChange.ProposeNonIonizingEnergyDeposit(nloss);
139 } 138 }
140 } 139 }
141 } 140 }
142 return &nParticleChange; 141 return &nParticleChange;
143 } 142 }
>> 143
>> 144 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 145
>> 146 void G4NuclearStopping::PrintInfo()
>> 147 {}
144 148
145 //....oooOO0OOooo........oooOO0OOooo........oo 149 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
146 150
147 void G4NuclearStopping::ProcessDescription(std 151 void G4NuclearStopping::ProcessDescription(std::ostream& out) const
148 { 152 {
149 out << " Nuclear stopping"; 153 out << " Nuclear stopping";
150 G4VEmProcess::ProcessDescription(out); 154 G4VEmProcess::ProcessDescription(out);
151 } 155 }
152 156
153 //....oooOO0OOooo........oooOO0OOooo........oo 157 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
154 158