Geant4  10.01
G4NuclearStopping.cc
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26 // $Id: G4NuclearStopping.cc 78837 2014-01-28 08:44:36Z gcosmo $
27 //
28 // -----------------------------------------------------------------------------
29 //
30 // GEANT4 Class file
31 //
32 // File name: G4NuclearStopping
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 20 July 2009
37 //
38 // Modified:
39 //
40 // Warning: this class should be instantiated after G4ionIonisation
41 //
42 // -----------------------------------------------------------------------------
43 //
44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
46 
47 #include "G4NuclearStopping.hh"
49 #include "G4SystemOfUnits.hh"
50 #include "G4PhysicalConstants.hh"
51 
52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
53 
54 using namespace std;
55 
57  : G4VEmProcess(processName)
58 {
59  isInitialized = false;
61  SetBuildTableFlag(false);
62  enableAlongStepDoIt = true;
63  enablePostStepDoIt = false;
64  modelICRU49 = 0;
65 }
66 
67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68 
70 {}
71 
72 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
73 
75 {
76  return (p.GetPDGCharge() != 0.0 && !p.IsShortLived());
77 }
78 
79 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
80 
82 {
83  if(!isInitialized) {
84  isInitialized = true;
85 
86  if(!EmModel(1)) {
89  }
90  AddEmModel(1, EmModel());
92  }
93 }
94 
95 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
96 
97 G4double
99  const G4Track&, G4double, G4double, G4double&, G4GPILSelection* selection)
100 {
101  *selection = NotCandidateForSelection;
102  return DBL_MAX;
103 }
104 
105 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
106 
108  const G4Step& step)
109 {
111 
112  // this line only valid if nuclear stopping
113  // is computed after G4ionIonisation process
115 
117 
118  const G4ParticleDefinition* part = track.GetParticleDefinition();
119  G4double Z = std::fabs(part->GetPDGCharge()/eplus);
120 
121  if(T2 > 0.0 && T2*proton_mass_c2 < Z*Z*MeV*part->GetPDGMass()) {
122 
123  G4double length = step.GetStepLength();
124  if(length > 0.0) {
125 
126  // primary
128  G4double T = 0.5*(T1 + T2);
129  const G4MaterialCutsCouple* couple = track.GetMaterialCutsCouple();
130  G4VEmModel* mod = SelectModel(T, couple->GetIndex());
131 
132  // sample stopping
134  G4double nloss =
135  length*mod->ComputeDEDXPerVolume(couple->GetMaterial(), part, T);
136  if(nloss > T1) { nloss = T1; }
141  }
142  }
143  return &nParticleChange;
144 }
145 
146 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
147 
149 {}
150 
151 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
152 
G4NuclearStopping(const G4String &processName="nuclearStopping")
G4VEmModel * SelectModel(G4double &kinEnergy, size_t index)
G4double GetStepLength() const
void InitialiseProcess(const G4ParticleDefinition *)
void SetBuildTableFlag(G4bool val)
G4VEmModel * EmModel(G4int index=1) const
G4bool IsApplicable(const G4ParticleDefinition &p)
const G4MaterialCutsCouple * GetMaterialCutsCouple() const
void InitializeForAlongStep(const G4Track &)
void ProposeLocalEnergyDeposit(G4double anEnergyPart)
G4StepPoint * GetPreStepPoint() const
void SetEmModel(G4VEmModel *, G4int index=1)
void ProposeNonIonizingEnergyDeposit(G4double anEnergyPart)
void SetParticleChange(G4VParticleChange *, G4VEmFluctuationModel *f=0)
Definition: G4VEmModel.cc:413
bool G4bool
Definition: G4Types.hh:79
G4double GetCharge() const
void SetProposedKineticEnergy(G4double proposedKinEnergy)
const G4ParticleDefinition * GetParticleDefinition() const
void SetProcessSubType(G4int)
Definition: G4VProcess.hh:432
Definition: G4Step.hh:76
G4bool enablePostStepDoIt
Definition: G4VProcess.hh:352
G4VParticleChange * AlongStepDoIt(const G4Track &track, const G4Step &step)
G4double AlongStepGetPhysicalInteractionLength(const G4Track &track, G4double previousStepSize, G4double currentMinimumStep, G4double &proposedSafety, G4GPILSelection *selection)
virtual G4double ComputeDEDXPerVolume(const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=DBL_MAX)
Definition: G4VEmModel.cc:262
void AddEmModel(G4int, G4VEmModel *, const G4Region *region=0)
G4StepPoint * GetPostStepPoint() const
G4ICRU49NuclearStoppingModel * modelICRU49
void SetProposedCharge(G4double theCharge)
G4bool enableAlongStepDoIt
Definition: G4VProcess.hh:351
G4double GetKineticEnergy() const
double G4double
Definition: G4Types.hh:76
static const double eplus
Definition: G4SIunits.hh:178
G4double GetPDGCharge() const
#define DBL_MAX
Definition: templates.hh:83
G4ParticleChangeForLoss nParticleChange
G4GPILSelection
const G4Material * GetMaterial() const
virtual ~G4NuclearStopping()