Geant4 10.7.0
Toolkit for the simulation of the passage of particles through matter
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Public Member Functions | Protected Attributes | List of all members
G4XrayRayleighModel Class Reference

#include <G4XrayRayleighModel.hh>

+ Inheritance diagram for G4XrayRayleighModel:

Public Member Functions

 G4XrayRayleighModel (const G4ParticleDefinition *p=0, const G4String &nam="XrayRayleigh")
 
virtual ~G4XrayRayleighModel ()
 
virtual void Initialise (const G4ParticleDefinition *, const G4DataVector &)
 
virtual G4double ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kinEnergy, G4double Z, G4double A=0, G4double cut=0, G4double emax=DBL_MAX)
 
virtual void SampleSecondaries (std::vector< G4DynamicParticle * > *, const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmin, G4double maxEnergy)
 
- Public Member Functions inherited from G4VEmModel
 G4VEmModel (const G4String &nam)
 
virtual ~G4VEmModel ()
 
virtual void Initialise (const G4ParticleDefinition *, const G4DataVector &)=0
 
virtual void SampleSecondaries (std::vector< G4DynamicParticle * > *, const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmin=0.0, G4double tmax=DBL_MAX)=0
 
virtual void InitialiseLocal (const G4ParticleDefinition *, G4VEmModel *masterModel)
 
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 ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kinEnergy, G4double Z, G4double A=0., G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
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 *, G4double &eloss, G4double &niel, G4double length)
 
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 ModelDescription (std::ostream &outFile) const
 
void InitialiseElementSelectors (const G4ParticleDefinition *, const G4DataVector &)
 
std::vector< G4EmElementSelector * > * GetElementSelectors ()
 
void SetElementSelectors (std::vector< G4EmElementSelector * > *)
 
virtual 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)
 
G4int SelectRandomAtomNumber (const G4Material *)
 
G4int SelectIsotopeNumber (const G4Element *)
 
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 LPMFlag () 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 SetLPMFlag (G4bool val)
 
void SetDeexcitationFlag (G4bool val)
 
void SetForceBuildTable (G4bool val)
 
void SetFluctuationFlag (G4bool val)
 
void SetMasterThread (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 *)
 
const G4Element * GetCurrentElement () const
 
const G4Isotope * GetCurrentIsotope () const
 
G4bool IsLocked () const
 
void SetLocked (G4bool)
 
G4VEmModel & operator= (const G4VEmModel &right)=delete
 
 G4VEmModel (const G4VEmModel &)=delete
 

Protected Attributes

G4ParticleChangeForGamma * fParticleChange
 
- Protected Attributes inherited from G4VEmModel
G4ElementData * fElementData
 
G4VParticleChange * pParticleChange
 
G4PhysicsTable * xSectionTable
 
const G4Material * pBaseMaterial
 
const std::vector< G4double > * theDensityFactor
 
const std::vector< G4int > * theDensityIdx
 
size_t idxTable
 
G4bool lossFlucFlag
 
G4double inveplus
 
G4double pFactor
 

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 *)
 

Detailed Description

Definition at line 42 of file G4XrayRayleighModel.hh.

Constructor & Destructor Documentation

◆ G4XrayRayleighModel()

G4XrayRayleighModel::G4XrayRayleighModel ( const G4ParticleDefinition *  p = 0,
const G4String &  nam = "XrayRayleigh" 
)
explicit

Definition at line 49 of file G4XrayRayleighModel.cc.

51 :G4VEmModel(nam),isInitialised(false)
52{
53 fParticleChange = 0;
54 lowEnergyLimit = 250*eV;
55 highEnergyLimit = 10.*MeV;
56 fFormFactor = 0.0;
57
58 // SetLowEnergyLimit(lowEnergyLimit);
59 SetHighEnergyLimit(highEnergyLimit);
60 //
61 verboseLevel= 0;
62 // Verbosity scale:
63 // 0 = nothing
64 // 1 = warning for energy non-conservation
65 // 2 = details of energy budget
66 // 3 = calculation of cross sections, file openings, sampling of atoms
67 // 4 = entering in methods
68
69 if(verboseLevel > 0)
70 {
71 G4cout << "Xray Rayleigh is constructed " << G4endl
72 << "Energy range: "
73 << lowEnergyLimit / eV << " eV - "
74 << highEnergyLimit / MeV << " MeV"
75 << G4endl;
76 }
77}
G4endl
#define G4endl
Definition: G4ios.hh:57
G4cout
G4GLOB_DLL std::ostream G4cout
G4VEmModel::SetHighEnergyLimit
void SetHighEnergyLimit(G4double)
Definition: G4VEmModel.hh:757
G4XrayRayleighModel::fParticleChange
G4ParticleChangeForGamma * fParticleChange
Definition: G4XrayRayleighModel.hh:70

◆ ~G4XrayRayleighModel()

G4XrayRayleighModel::~G4XrayRayleighModel ( )
virtual

Definition at line 81 of file G4XrayRayleighModel.cc.

82{
83
84}

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

G4double G4XrayRayleighModel::ComputeCrossSectionPerAtom ( const G4ParticleDefinition *  ,
G4double  kinEnergy,
G4double  Z,
G4double  A = 0,
G4double  cut = 0,
G4double  emax = DBL_MAX 
)
virtual

Reimplemented from G4VEmModel.

Definition at line 107 of file G4XrayRayleighModel.cc.

112{
113 if (verboseLevel > 3)
114 {
115 G4cout << "Calling CrossSectionPerAtom() of G4XrayRayleighModel" << G4endl;
116 }
117 if (gammaEnergy < lowEnergyLimit || gammaEnergy > highEnergyLimit)
118 {
119 return 0.0;
120 }
121 G4double k = gammaEnergy/hbarc;
122 k *= Bohr_radius;
123 G4double p0 = 0.680654;
124 G4double p1 = -0.0224188;
125 G4double lnZ = std::log(Z);
126
127 G4double lna = p0 + p1*lnZ;
128
129 G4double alpha = std::exp(lna);
130
131 G4double fo = std::pow(k, alpha);
132
133 p0 = 3.68455;
134 p1 = -0.464806;
135 lna = p0 + p1*lnZ;
136
137 fo *= 0.01*std::exp(lna);
138
139 fFormFactor = fo;
140
141 G4double b = 1. + 2.*fo;
142 G4double b2 = b*b;
143 G4double b3 = b*b2;
144
145 G4double xsc = fCofR*Z*Z/b3;
146 xsc *= fo*fo + (1. + fo)*(1. + fo);
147
148
149 return xsc;
150
151}
G4double
double G4double
Definition: G4Types.hh:83

◆ Initialise()

void G4XrayRayleighModel::Initialise ( const G4ParticleDefinition *  particle,
const G4DataVector &  cuts 
)
virtual

Implements G4VEmModel.

Definition at line 88 of file G4XrayRayleighModel.cc.

90{
91 if (verboseLevel > 3)
92 {
93 G4cout << "Calling G4XrayRayleighModel::Initialise()" << G4endl;
94 }
95
96 InitialiseElementSelectors(particle,cuts);
97
98
99 if(isInitialised) return;
100 fParticleChange = GetParticleChangeForGamma();
101 isInitialised = true;
102
103}
G4VEmModel::GetParticleChangeForGamma
G4ParticleChangeForGamma * GetParticleChangeForGamma()
Definition: G4VEmModel.cc:133
G4VEmModel::InitialiseElementSelectors
void InitialiseElementSelectors(const G4ParticleDefinition *, const G4DataVector &)
Definition: G4VEmModel.cc:148

◆ SampleSecondaries()

void G4XrayRayleighModel::SampleSecondaries ( std::vector< G4DynamicParticle * > *  ,
const G4MaterialCutsCouple *  couple,
const G4DynamicParticle *  aDPGamma,
G4double  tmin,
G4double  maxEnergy 
)
virtual

Implements G4VEmModel.

Definition at line 155 of file G4XrayRayleighModel.cc.

160{
161 if ( verboseLevel > 3)
162 {
163 G4cout << "Calling SampleSecondaries() of G4XrayRayleighModel" << G4endl;
164 }
165 G4double photonEnergy0 = aDPGamma->GetKineticEnergy();
166
167 G4ParticleMomentum photonDirection0 = aDPGamma->GetMomentumDirection();
168
169
170 // Sample the angle of the scattered photon
171 // according to 1 + cosTheta*cosTheta distribution
172
173 G4double cosDipole, cosTheta, sinTheta;
174 G4double c, delta, cofA, signc = 1., a, power = 1./3.;
175
176 c = 4. - 8.*G4UniformRand();
177 a = c;
178
179 if( c < 0. )
180 {
181 signc = -1.;
182 a = -c;
183 }
184 delta = std::sqrt(a*a+4.);
185 delta += a;
186 delta *= 0.5;
187 cofA = -signc*std::pow(delta, power);
188 cosDipole = cofA - 1./cofA;
189
190 // select atom
191 const G4Element* elm = SelectTargetAtom(couple, aDPGamma->GetParticleDefinition(),
192 photonEnergy0,aDPGamma->GetLogKineticEnergy());
193 G4double Z = elm->GetZ();
194
195 G4double k = photonEnergy0/hbarc;
196 k *= Bohr_radius;
197 G4double p0 = 0.680654;
198 G4double p1 = -0.0224188;
199 G4double lnZ = std::log(Z);
200
201 G4double lna = p0 + p1*lnZ;
202
203 G4double alpha = std::exp(lna);
204
205 G4double fo = std::pow(k, alpha);
206
207 p0 = 3.68455;
208 p1 = -0.464806;
209 lna = p0 + p1*lnZ;
210
211 fo *= 0.01*pi*std::exp(lna);
212
213
214 G4double beta = fo/(1 + fo);
215
216 cosTheta = (cosDipole + beta)/(1. + cosDipole*beta);
217
218
219 if( cosTheta > 1.) cosTheta = 1.;
220 if( cosTheta < -1.) cosTheta = -1.;
221
222 sinTheta = std::sqrt( (1. - cosTheta)*(1. + cosTheta) );
223
224 // Scattered photon angles. ( Z - axis along the parent photon)
225
226 G4double phi = twopi * G4UniformRand() ;
227 G4double dirX = sinTheta*std::cos(phi);
228 G4double dirY = sinTheta*std::sin(phi);
229 G4double dirZ = cosTheta;
230
231 // Update G4VParticleChange for the scattered photon
232
233 G4ThreeVector photonDirection1(dirX, dirY, dirZ);
234 photonDirection1.rotateUz(photonDirection0);
235 fParticleChange->ProposeMomentumDirection(photonDirection1);
236
237 fParticleChange->SetProposedKineticEnergy(photonEnergy0);
238}
G4UniformRand
#define G4UniformRand()
Definition: Randomize.hh:52
G4DynamicParticle::GetMomentumDirection
const G4ThreeVector & GetMomentumDirection() const
G4DynamicParticle::GetLogKineticEnergy
G4double GetLogKineticEnergy() const
G4DynamicParticle::GetParticleDefinition
const G4ParticleDefinition * GetParticleDefinition() const
G4DynamicParticle::GetKineticEnergy
G4double GetKineticEnergy() const
G4Element::GetZ
G4double GetZ() const
Definition: G4Element.hh:130
G4ParticleChangeForGamma::SetProposedKineticEnergy
void SetProposedKineticEnergy(G4double proposedKinEnergy)
Definition: G4ParticleChangeForGamma.hh:119
G4ParticleChangeForGamma::ProposeMomentumDirection
void ProposeMomentumDirection(G4double Px, G4double Py, G4double Pz)
Definition: G4ParticleChangeForGamma.hh:139
G4VEmModel::SelectTargetAtom
const G4Element * SelectTargetAtom(const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double logKineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
Definition: G4VEmModel.hh:587
G4INCL::Math::pi
const G4double pi
Definition: G4INCLGlobals.hh:68

Member Data Documentation

◆ fParticleChange

G4ParticleChangeForGamma* G4XrayRayleighModel::fParticleChange
protected

Definition at line 70 of file G4XrayRayleighModel.hh.

Referenced by G4XrayRayleighModel(), Initialise(), and SampleSecondaries().

The documentation for this class was generated from the following files: