Geant4 11.3.0
Toolkit for the simulation of the passage of particles through matter
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Public Member Functions | List of all members
G4eSingleCoulombScatteringModel Class Reference

#include <G4eSingleCoulombScatteringModel.hh>

+ Inheritance diagram for G4eSingleCoulombScatteringModel:

Public Member Functions

 G4eSingleCoulombScatteringModel (const G4String &nam="eSingleCoulombScat")
 
 ~G4eSingleCoulombScatteringModel () override
 
void Initialise (const G4ParticleDefinition *, const G4DataVector &) final
 
void InitialiseLocal (const G4ParticleDefinition *, G4VEmModel *masterModel) final
 
G4double ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kinEnergy, G4double Z, G4double A, G4double cut, G4double emax) final
 
void SampleSecondaries (std::vector< G4DynamicParticle * > *, const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmin, G4double maxEnergy) final
 
void SetRecoilThreshold (G4double eth)
 
void SetXSectionModel (const G4String &model)
 
G4eSingleCoulombScatteringModel & operator= (const G4eSingleCoulombScatteringModel &right)=delete
 
 G4eSingleCoulombScatteringModel (const G4eSingleCoulombScatteringModel &)=delete
 
- Public Member Functions inherited from G4VEmModel
 G4VEmModel (const G4String &nam)
 
virtual ~G4VEmModel ()
 
virtual void InitialiseForMaterial (const G4ParticleDefinition *, const G4Material *)
 
virtual void InitialiseForElement (const G4ParticleDefinition *, G4int Z)
 
virtual G4double ComputeDEDXPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=DBL_MAX)
 
virtual G4double CrossSectionPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
virtual G4double GetPartialCrossSection (const G4Material *, G4int level, const G4ParticleDefinition *, G4double kineticEnergy)
 
virtual G4double ComputeCrossSectionPerShell (const G4ParticleDefinition *, G4int Z, G4int shellIdx, G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
virtual G4double ChargeSquareRatio (const G4Track &)
 
virtual G4double GetChargeSquareRatio (const G4ParticleDefinition *, const G4Material *, G4double kineticEnergy)
 
virtual G4double GetParticleCharge (const G4ParticleDefinition *, const G4Material *, G4double kineticEnergy)
 
virtual void StartTracking (G4Track *)
 
virtual void CorrectionsAlongStep (const G4MaterialCutsCouple *, const G4DynamicParticle *, const G4double &length, G4double &eloss)
 
virtual G4double Value (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy)
 
virtual G4double MinPrimaryEnergy (const G4Material *, const G4ParticleDefinition *, G4double cut=0.0)
 
virtual G4double MinEnergyCut (const G4ParticleDefinition *, const G4MaterialCutsCouple *)
 
virtual void SetupForMaterial (const G4ParticleDefinition *, const G4Material *, G4double kineticEnergy)
 
virtual void DefineForRegion (const G4Region *)
 
virtual void FillNumberOfSecondaries (G4int &numberOfTriplets, G4int &numberOfRecoil)
 
virtual void ModelDescription (std::ostream &outFile) const
 
void InitialiseElementSelectors (const G4ParticleDefinition *, const G4DataVector &)
 
std::vector< G4EmElementSelector * > * GetElementSelectors ()
 
void SetElementSelectors (std::vector< G4EmElementSelector * > *)
 
G4double ComputeDEDX (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=DBL_MAX)
 
G4double CrossSection (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
G4double ComputeMeanFreePath (const G4ParticleDefinition *, G4double kineticEnergy, const G4Material *, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
G4double ComputeCrossSectionPerAtom (const G4ParticleDefinition *, const G4Element *, G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
const G4Element * SelectRandomAtom (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
const G4Element * SelectTargetAtom (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double logKineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
const G4Element * SelectRandomAtom (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
const G4Element * GetCurrentElement (const G4Material *mat=nullptr) const
 
G4int SelectRandomAtomNumber (const G4Material *) const
 
const G4Isotope * GetCurrentIsotope (const G4Element *elm=nullptr) const
 
G4int SelectIsotopeNumber (const G4Element *) const
 
void SetParticleChange (G4VParticleChange *, G4VEmFluctuationModel *f=nullptr)
 
void SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)
 
G4ElementData * GetElementData ()
 
G4PhysicsTable * GetCrossSectionTable ()
 
G4VEmFluctuationModel * GetModelOfFluctuations ()
 
G4VEmAngularDistribution * GetAngularDistribution ()
 
G4VEmModel * GetTripletModel ()
 
void SetTripletModel (G4VEmModel *)
 
void SetAngularDistribution (G4VEmAngularDistribution *)
 
G4double HighEnergyLimit () const
 
G4double LowEnergyLimit () const
 
G4double HighEnergyActivationLimit () const
 
G4double LowEnergyActivationLimit () const
 
G4double PolarAngleLimit () const
 
G4double SecondaryThreshold () const
 
G4bool DeexcitationFlag () const
 
G4bool ForceBuildTableFlag () const
 
G4bool UseAngularGeneratorFlag () const
 
void SetAngularGeneratorFlag (G4bool)
 
void SetHighEnergyLimit (G4double)
 
void SetLowEnergyLimit (G4double)
 
void SetActivationHighEnergyLimit (G4double)
 
void SetActivationLowEnergyLimit (G4double)
 
G4bool IsActive (G4double kinEnergy) const
 
void SetPolarAngleLimit (G4double)
 
void SetSecondaryThreshold (G4double)
 
void SetDeexcitationFlag (G4bool val)
 
void SetForceBuildTable (G4bool val)
 
void SetFluctuationFlag (G4bool val)
 
G4bool IsMaster () const
 
void SetUseBaseMaterials (G4bool val)
 
G4bool UseBaseMaterials () const
 
G4double MaxSecondaryKinEnergy (const G4DynamicParticle *dynParticle)
 
const G4String & GetName () const
 
void SetCurrentCouple (const G4MaterialCutsCouple *)
 
G4bool IsLocked () const
 
void SetLocked (G4bool)
 
void SetLPMFlag (G4bool)
 
void SetMasterThread (G4bool)
 
G4VEmModel & operator= (const G4VEmModel &right)=delete
 
 G4VEmModel (const G4VEmModel &)=delete
 

Additional Inherited Members

- Protected Member Functions inherited from G4VEmModel
G4ParticleChangeForLoss * GetParticleChangeForLoss ()
 
G4ParticleChangeForGamma * GetParticleChangeForGamma ()
 
virtual G4double MaxSecondaryEnergy (const G4ParticleDefinition *, G4double kineticEnergy)
 
const G4MaterialCutsCouple * CurrentCouple () const
 
void SetCurrentElement (const G4Element *)
 
- Protected Attributes inherited from G4VEmModel
G4ElementData * fElementData = nullptr
 
G4VParticleChange * pParticleChange = nullptr
 
G4PhysicsTable * xSectionTable = nullptr
 
const G4Material * pBaseMaterial = nullptr
 
const std::vector< G4double > * theDensityFactor = nullptr
 
const std::vector< G4int > * theDensityIdx = nullptr
 
G4double inveplus
 
G4double pFactor = 1.0
 
std::size_t currentCoupleIndex = 0
 
std::size_t basedCoupleIndex = 0
 
G4bool lossFlucFlag = true
 

Detailed Description

Definition at line 66 of file G4eSingleCoulombScatteringModel.hh.

Constructor & Destructor Documentation

◆ G4eSingleCoulombScatteringModel() [1/2]

G4eSingleCoulombScatteringModel::G4eSingleCoulombScatteringModel ( const G4String & nam = "eSingleCoulombScat")
explicit

Definition at line 75 of file G4eSingleCoulombScatteringModel.cc.

76 : G4VEmModel(nam),
77 cosThetaMin(1.0)
78{
79 fNistManager = G4NistManager::Instance();
80 theIonTable = G4ParticleTable::GetParticleTable()->GetIonTable();
81 fParticleChange = nullptr;
82
83 pCuts=nullptr;
84 currentMaterial = nullptr;
85 currentElement = nullptr;
86 currentCouple = nullptr;
87
88 lowEnergyLimit = 0*keV;
89 recoilThreshold = 0.*eV;
90 XSectionModel = 1;
91 FormFactor = 0;
92 particle = nullptr;
93 mass=0.0;
94 currentMaterialIndex = -1;
95
96 Mottcross = new G4ScreeningMottCrossSection();
97 //G4cout <<"## G4eSingleCoulombScatteringModel: " << this << " " << Mottcross << G4endl;
98}
G4NistManager::Instance
static G4NistManager * Instance()
Definition G4NistManager.cc:57
G4ParticleTable::GetIonTable
G4IonTable * GetIonTable() const
Definition G4ParticleTable.cc:588
G4ParticleTable::GetParticleTable
static G4ParticleTable * GetParticleTable()
Definition G4ParticleTable.cc:82
G4VEmModel::G4VEmModel
G4VEmModel(const G4String &nam)
Definition G4VEmModel.cc:67

Referenced by G4eSingleCoulombScatteringModel(), and operator=().

◆ ~G4eSingleCoulombScatteringModel()

G4eSingleCoulombScatteringModel::~G4eSingleCoulombScatteringModel ( )
override

Definition at line 102 of file G4eSingleCoulombScatteringModel.cc.

103{
104 //G4cout <<"## G4eSingleCoulombScatteringModel: delete " << this << " " << Mottcross << G4endl;
105 delete Mottcross;
106}

◆ G4eSingleCoulombScatteringModel() [2/2]

G4eSingleCoulombScatteringModel::G4eSingleCoulombScatteringModel ( const G4eSingleCoulombScatteringModel & )
delete

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

G4double G4eSingleCoulombScatteringModel::ComputeCrossSectionPerAtom ( const G4ParticleDefinition * p,
G4double kinEnergy,
G4double Z,
G4double A,
G4double cut,
G4double emax )
finalvirtual

Reimplemented from G4VEmModel.

Definition at line 167 of file G4eSingleCoulombScatteringModel.cc.

174{
175 SetupParticle(p);
176
177 G4double cross =0.0;
178 if(kinEnergy < lowEnergyLimit) return cross;
179
180 DefineMaterial(CurrentCouple());
181
182 //Total Cross section
183 Mottcross->SetupKinematic(kinEnergy, Z);
184 cross = Mottcross->NuclearCrossSection(FormFactor,XSectionModel);
185
186 //cout<< "Compute Cross Section....cross "<<G4BestUnit(cross,"Surface") << " cm2 "<< cross/cm2 <<" Z: "<<Z<<" kinEnergy: "<<kinEnergy<<endl;
187
188 //G4cout<<"Energy: "<<kinEnergy/MeV<<" Total Cross: "<<cross<<G4endl;
189 return cross;
190}
G4double
double G4double
Definition G4Types.hh:83
G4VEmModel::CurrentCouple
const G4MaterialCutsCouple * CurrentCouple() const
Definition G4VEmModel.hh:485

◆ Initialise()

void G4eSingleCoulombScatteringModel::Initialise ( const G4ParticleDefinition * p,
const G4DataVector & cuts )
finalvirtual

Implements G4VEmModel.

Definition at line 110 of file G4eSingleCoulombScatteringModel.cc.

112{
113 G4EmParameters* param = G4EmParameters::Instance();
114
115 SetupParticle(p);
116 currentCouple = nullptr;
117 currentMaterialIndex = -1;
118 //cosThetaMin = cos(PolarAngleLimit());
119 Mottcross->Initialise(p,cosThetaMin);
120
121 pCuts = &cuts;
122 //G4ProductionCutsTable::GetProductionCutsTable()->GetEnergyCutsVector(3);
123
124 /*
125 G4cout << "!!! G4eSingleCoulombScatteringModel::Initialise for "
126 << part->GetParticleName() << " cos(TetMin)= " << cosThetaMin
127 << " cos(TetMax)= " << cosThetaMax <<G4endl;
128 G4cout << "cut= " << (*pCuts)[0] << " cut1= " << (*pCuts)[1] << G4endl;
129 */
130
131 if(!fParticleChange) {
132 fParticleChange = GetParticleChangeForGamma();
133 }
134
135 if(IsMaster()) {
136 InitialiseElementSelectors(p,cuts);
137 }
138
139 FormFactor=param->NuclearFormfactorType();
140
141 //G4cout<<"NUCLEAR FORM FACTOR: "<<FormFactor<<G4endl;
142}
G4EmParameters::Instance
static G4EmParameters * Instance()
Definition G4EmParameters.cc:70
G4EmParameters::NuclearFormfactorType
G4NuclearFormfactorType NuclearFormfactorType() const
Definition G4EmParameters.cc:1130
G4VEmModel::GetParticleChangeForGamma
G4ParticleChangeForGamma * GetParticleChangeForGamma()
Definition G4VEmModel.cc:121
G4VEmModel::IsMaster
G4bool IsMaster() const
Definition G4VEmModel.hh:710
G4VEmModel::InitialiseElementSelectors
void InitialiseElementSelectors(const G4ParticleDefinition *, const G4DataVector &)
Definition G4VEmModel.cc:136

◆ InitialiseLocal()

void G4eSingleCoulombScatteringModel::InitialiseLocal ( const G4ParticleDefinition * ,
G4VEmModel * masterModel )
finalvirtual

Reimplemented from G4VEmModel.

Definition at line 147 of file G4eSingleCoulombScatteringModel.cc.

149{
150 SetElementSelectors(masterModel->GetElementSelectors());
151}
G4VEmModel::SetElementSelectors
void SetElementSelectors(std::vector< G4EmElementSelector * > *)
Definition G4VEmModel.hh:809
G4VEmModel::GetElementSelectors
std::vector< G4EmElementSelector * > * GetElementSelectors()
Definition G4VEmModel.hh:801

◆ operator=()

G4eSingleCoulombScatteringModel & G4eSingleCoulombScatteringModel::operator= ( const G4eSingleCoulombScatteringModel & right)
delete

◆ SampleSecondaries()

void G4eSingleCoulombScatteringModel::SampleSecondaries ( std::vector< G4DynamicParticle * > * fvect,
const G4MaterialCutsCouple * couple,
const G4DynamicParticle * dp,
G4double tmin,
G4double maxEnergy )
finalvirtual

Implements G4VEmModel.

Definition at line 194 of file G4eSingleCoulombScatteringModel.cc.

200{
201 G4double kinEnergy = dp->GetKineticEnergy();
202 //cout<<"--- kinEnergy "<<kinEnergy<<endl;
203
204 if(kinEnergy < lowEnergyLimit) return;
205
206 DefineMaterial(couple);
207 SetupParticle(dp->GetDefinition());
208
209 // Choose nucleus
210 //last two :cutEnergy= min e kinEnergy=max
211 currentElement = SelectTargetAtom(couple, particle, kinEnergy,
212 dp->GetLogKineticEnergy(), cutEnergy, kinEnergy);
213 G4int iz = currentElement->GetZasInt();
214 G4int ia = SelectIsotopeNumber(currentElement);
215 G4double mass2 = G4NucleiProperties::GetNuclearMass(ia, iz);
216
217 //G4cout<<"..Z: "<<Z<<" ..iz: "<<iz<<" ..ia: "<<ia<<" ..mass2: "<<mass2<<G4endl;
218
219 Mottcross->SetupKinematic(kinEnergy, iz);
220 G4double cross= Mottcross->NuclearCrossSection(FormFactor,XSectionModel);
221 if(cross == 0.0) { return; }
222 //cout<< "Energy: "<<kinEnergy/MeV<<" Z: "<<Z<<"....cross "<<G4BestUnit(cross,"Surface") << " cm2 "<< cross/cm2 <<endl;
223
224 G4double z1 = Mottcross->GetScatteringAngle(FormFactor,XSectionModel);
225 G4double sint = sin(z1);
226 G4double cost = cos(z1);
227 G4double phi = twopi* G4UniformRand();
228
229 // kinematics in the Lab system
230 G4double ptot = sqrt(kinEnergy*(kinEnergy + 2.0*mass));
231 G4double e1 = mass + kinEnergy;
232
233 // Lab. system kinematics along projectile direction
234 G4LorentzVector v0 = G4LorentzVector(0, 0, ptot, e1+mass2);
235 G4LorentzVector v1 = G4LorentzVector(0, 0, ptot, e1);
236 G4ThreeVector bst = v0.boostVector();
237 v1.boost(-bst);
238 // CM projectile
239 G4double momCM = v1.pz();
240
241 // Momentum after scattering of incident particle
242 v1.setX(momCM*sint*cos(phi));
243 v1.setY(momCM*sint*sin(phi));
244 v1.setZ(momCM*cost);
245
246 // CM--->Lab
247 v1.boost(bst);
248
249 // Rotate to global system
250 G4ThreeVector dir = dp->GetMomentumDirection();
251 G4ThreeVector newDirection = v1.vect().unit();
252 newDirection.rotateUz(dir);
253
254 fParticleChange->ProposeMomentumDirection(newDirection);
255
256 // recoil
257 v0 -= v1;
258 G4double trec = std::max(v0.e() - mass2, 0.0);
259 G4double edep = 0.0;
260
261 G4double tcut = recoilThreshold;
262
263 //G4cout<<" Energy Transfered: "<<trec/eV<<G4endl;
264
265 if(pCuts) {
266 tcut= std::max(tcut,(*pCuts)[currentMaterialIndex]);
267 //G4cout<<"Cuts: "<<(*pCuts)[currentMaterialIndex]/eV<<" eV"<<G4endl;
268 //G4cout<<"Threshold: "<<tcut/eV<<" eV"<<G4endl;
269 }
270
271 if(trec > tcut) {
272 G4ParticleDefinition* ion = theIonTable->GetIon(iz, ia, 0);
273 newDirection = v0.vect().unit();
274 newDirection.rotateUz(dir);
275 auto newdp = new G4DynamicParticle(ion, newDirection, trec);
276 fvect->push_back(newdp);
277 } else if(trec > 0.0) {
278 edep = trec;
279 fParticleChange->ProposeNonIonizingEnergyDeposit(edep);
280 }
281
282 // finelize primary energy and energy balance
283 G4double finalT = v1.e() - mass;
284 //G4cout<<"Final Energy: "<<finalT/eV<<G4endl;
285 if(finalT <= lowEnergyLimit) {
286 edep += finalT;
287 finalT = 0.0;
288 }
289 edep = std::max(edep, 0.0);
290 fParticleChange->SetProposedKineticEnergy(finalT);
291 fParticleChange->ProposeLocalEnergyDeposit(edep);
292
293}
G4LorentzVector
CLHEP::HepLorentzVector G4LorentzVector
Definition G4LorentzVector.hh:33
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition G4ThreeVector.hh:36
G4int
int G4int
Definition G4Types.hh:85
G4UniformRand
#define G4UniformRand()
Definition Randomize.hh:52
CLHEP::Hep3Vector::unit
Hep3Vector unit() const
CLHEP::Hep3Vector::rotateUz
Hep3Vector & rotateUz(const Hep3Vector &)
Definition ThreeVector.cc:33
CLHEP::HepLorentzVector::boostVector
Hep3Vector boostVector() const
Definition LorentzVector.cc:173
CLHEP::HepLorentzVector::boost
HepLorentzVector & boost(double, double, double)
Definition LorentzVector.cc:55
CLHEP::HepLorentzVector::vect
Hep3Vector vect() const
G4DynamicParticle::GetMomentumDirection
const G4ThreeVector & GetMomentumDirection() const
G4DynamicParticle::GetLogKineticEnergy
G4double GetLogKineticEnergy() const
G4DynamicParticle::GetDefinition
G4ParticleDefinition * GetDefinition() const
G4DynamicParticle::GetKineticEnergy
G4double GetKineticEnergy() const
G4NucleiProperties::GetNuclearMass
static G4double GetNuclearMass(const G4double A, const G4double Z)
Definition G4NucleiProperties.cc:49
G4VEmModel::SelectIsotopeNumber
G4int SelectIsotopeNumber(const G4Element *) const
Definition G4VEmModel.cc:274
G4VEmModel::SelectTargetAtom
const G4Element * SelectTargetAtom(const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double logKineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
Definition G4VEmModel.hh:576

◆ SetRecoilThreshold()

void G4eSingleCoulombScatteringModel::SetRecoilThreshold ( G4double eth)
inline

Definition at line 155 of file G4eSingleCoulombScatteringModel.hh.

156{
157 recoilThreshold = eth;
158}

◆ SetXSectionModel()

void G4eSingleCoulombScatteringModel::SetXSectionModel ( const G4String & model)

Definition at line 155 of file G4eSingleCoulombScatteringModel.cc.

156{
157 if(model == "Fast" || model == "fast") { XSectionModel=1; }
158 else if(model == "Precise" || model == "precise") { XSectionModel=0; }
159 else {
160 G4cout<<"G4eSingleCoulombScatteringModel WARNING: "<<model
161 <<" is not a valid model name"<<G4endl;
162 }
163}
G4endl
#define G4endl
Definition G4ios.hh:67
G4cout
G4GLOB_DLL std::ostream G4cout
The documentation for this class was generated from the following files: