Geant4 11.3.0
Toolkit for the simulation of the passage of particles through matter
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Public Member Functions | Protected Member Functions | List of all members
G4AtimaEnergyLossModel Class Reference

#include <G4AtimaEnergyLossModel.hh>

+ Inheritance diagram for G4AtimaEnergyLossModel:

Public Member Functions

 G4AtimaEnergyLossModel (const G4ParticleDefinition *p=nullptr, const G4String &nam="Atima")
 
 ~G4AtimaEnergyLossModel () override
 
void Initialise (const G4ParticleDefinition *, const G4DataVector &) override
 
G4double MinEnergyCut (const G4ParticleDefinition *, const G4MaterialCutsCouple *couple) override
 
G4double ComputeCrossSectionPerElectron (const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy, G4double maxEnergy)
 
G4double ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kineticEnergy, G4double Z, G4double A, G4double cutEnergy, G4double maxEnergy) override
 
G4double CrossSectionPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy, G4double maxEnergy) override
 
G4double ComputeDEDXPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double) override
 
G4double GetChargeSquareRatio (const G4ParticleDefinition *p, const G4Material *mat, G4double kineticEnergy) override
 
G4double GetParticleCharge (const G4ParticleDefinition *p, const G4Material *mat, G4double kineticEnergy) override
 
void CorrectionsAlongStep (const G4MaterialCutsCouple *, const G4DynamicParticle *, const G4double &, G4double &) override
 
void SampleSecondaries (std::vector< G4DynamicParticle * > *, const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmin, G4double maxEnergy) override
 
- Public Member Functions inherited from G4VEmModel
 G4VEmModel (const G4String &nam)
 
virtual ~G4VEmModel ()
 
virtual void InitialiseLocal (const G4ParticleDefinition *, G4VEmModel *masterModel)
 
virtual void InitialiseForMaterial (const G4ParticleDefinition *, const G4Material *)
 
virtual void InitialiseForElement (const G4ParticleDefinition *, G4int Z)
 
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 void StartTracking (G4Track *)
 
virtual G4double Value (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy)
 
virtual G4double MinPrimaryEnergy (const G4Material *, const G4ParticleDefinition *, G4double cut=0.0)
 
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
 

Protected Member Functions

G4double MaxSecondaryEnergy (const G4ParticleDefinition *, G4double kinEnergy) override
 
G4double GetChargeSquareRatio () const
 
void SetChargeSquareRatio (G4double val)
 
- Protected Member Functions inherited from G4VEmModel
G4ParticleChangeForLoss * GetParticleChangeForLoss ()
 
G4ParticleChangeForGamma * GetParticleChangeForGamma ()
 
const G4MaterialCutsCouple * CurrentCouple () const
 
void SetCurrentElement (const G4Element *)
 

Additional Inherited Members

- 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 57 of file G4AtimaEnergyLossModel.hh.

Constructor & Destructor Documentation

◆ G4AtimaEnergyLossModel()

G4AtimaEnergyLossModel::G4AtimaEnergyLossModel ( const G4ParticleDefinition * p = nullptr,
const G4String & nam = "Atima" )
explicit

Definition at line 74 of file G4AtimaEnergyLossModel.cc.

76 : G4VEmModel(nam),
77 particle(nullptr)
78{
79 g4calc = G4Pow::GetInstance();
80 fParticleChange = nullptr;
81 theElectron = G4Electron::Electron();
82 corr = G4LossTableManager::Instance()->EmCorrections();
83 nist = G4NistManager::Instance();
84 SetLowEnergyLimit(2.0*MeV);
85 MLN10 = 2.30258509299;
86 atomic_mass_unit = 931.4940954; // MeV/c^2
87 dedx_constant = 0.3070749187; //4*pi*Na*me*c^2*r_e^2 //MeV cm^2
88 electron_mass = 0.510998928; // MeV/c^2
89 fine_structure = 1.0/137.035999139;
90 domega2dx_constant = dedx_constant*electron_mass; //4*pi*Na*me*c^2*r_e^2 //MeV^2 cm^2
91 if(tableE[0] == 0.0) {
92 G4double logmin = 0.;
93 G4double logmax = 5.;
94 stepE = (logmax-logmin)/199.;
95 for(G4int i=0; i<200; ++i){
96 tableE[i] = G4Exp(MLN10*(logmin + ((G4double)i)*stepE));
97 }
98 }
99}
G4Exp
G4double G4Exp(G4double initial_x)
Exponential Function double precision.
Definition G4Exp.hh:180
G4double
double G4double
Definition G4Types.hh:83
G4int
int G4int
Definition G4Types.hh:85
G4Electron::Electron
static G4Electron * Electron()
Definition G4Electron.cc:91
G4LossTableManager::Instance
static G4LossTableManager * Instance()
Definition G4LossTableManager.cc:88
G4LossTableManager::EmCorrections
G4EmCorrections * EmCorrections()
Definition G4LossTableManager.hh:383
G4NistManager::Instance
static G4NistManager * Instance()
Definition G4NistManager.cc:57
G4Pow::GetInstance
static G4Pow * GetInstance()
Definition G4Pow.cc:41
G4VEmModel::SetLowEnergyLimit
void SetLowEnergyLimit(G4double)
Definition G4VEmModel.hh:738
G4VEmModel::G4VEmModel
G4VEmModel(const G4String &nam)
Definition G4VEmModel.cc:67

Referenced by ~G4AtimaEnergyLossModel().

◆ ~G4AtimaEnergyLossModel()

G4AtimaEnergyLossModel::~G4AtimaEnergyLossModel ( )
overridedefault

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

G4double G4AtimaEnergyLossModel::ComputeCrossSectionPerAtom ( const G4ParticleDefinition * p,
G4double kineticEnergy,
G4double Z,
G4double A,
G4double cutEnergy,
G4double maxEnergy )
overridevirtual

Reimplemented from G4VEmModel.

Definition at line 222 of file G4AtimaEnergyLossModel.cc.

228{
229 G4double cross = Z*ComputeCrossSectionPerElectron
230 (p,kineticEnergy,cutEnergy,maxEnergy);
231 return cross;
232}
G4AtimaEnergyLossModel::ComputeCrossSectionPerElectron
G4double ComputeCrossSectionPerElectron(const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy, G4double maxEnergy)
Definition G4AtimaEnergyLossModel.cc:191

◆ ComputeCrossSectionPerElectron()

G4double G4AtimaEnergyLossModel::ComputeCrossSectionPerElectron ( const G4ParticleDefinition * p,
G4double kineticEnergy,
G4double cutEnergy,
G4double maxEnergy )

Definition at line 191 of file G4AtimaEnergyLossModel.cc.

195{
196 G4double cross = 0.0;
197 G4double tmax = MaxSecondaryEnergy(p, kineticEnergy);
198 G4double maxEnergy = std::min(tmax,maxKinEnergy);
199 if(cutEnergy < maxEnergy) {
200
201 G4double totEnergy = kineticEnergy + mass;
202 G4double energy2 = totEnergy*totEnergy;
203 G4double beta2 = kineticEnergy*(kineticEnergy + 2.0*mass)/energy2;
204
205 cross = (maxEnergy - cutEnergy)/(cutEnergy*maxEnergy)
206 - beta2*G4Log(maxEnergy/cutEnergy)/tmax;
207
208 // +term for spin=1/2 particle
209 if( 0.0 < spin ) { cross += 0.5*(maxEnergy - cutEnergy)/energy2; }
210
211 cross *= twopi_mc2_rcl2*chargeSquare/beta2;
212 }
213
214 // G4cout << "BB: e= " << kineticEnergy << " tmin= " << cutEnergy
215 // << " tmax= " << tmax << " cross= " << cross << G4endl;
216
217 return cross;
218}
G4Log
G4double G4Log(G4double x)
Definition G4Log.hh:227
G4AtimaEnergyLossModel::MaxSecondaryEnergy
G4double MaxSecondaryEnergy(const G4ParticleDefinition *, G4double kinEnergy) override
Definition G4AtimaEnergyLossModel.cc:402

Referenced by ComputeCrossSectionPerAtom(), and CrossSectionPerVolume().

◆ ComputeDEDXPerVolume()

G4double G4AtimaEnergyLossModel::ComputeDEDXPerVolume ( const G4Material * material,
const G4ParticleDefinition * p,
G4double kineticEnergy,
G4double  )
overridevirtual

Reimplemented from G4VEmModel.

Definition at line 251 of file G4AtimaEnergyLossModel.cc.

255{
256 //Call to ATIMA Stopping Power function
257 G4double zt = material->GetIonisation()->GetZeffective();
258 zt = std::min(zt,93.);
259 G4double at = nist->GetAtomicMassAmu(G4lrint(zt));
260 G4double dedx = StoppingPower(p->GetPDGMass(), p->GetPDGCharge(),
261 kineticEnergy/(MeV), at, zt) *material->GetDensity()/(g/cm3);
262 dedx = std::max(dedx, 0.0);
263
264 // G4cout << "E(MeV)= " << kineticEnergy/MeV << " dedx= " << dedx
265 // << " " << material->GetName() << G4endl;
266 return dedx;
267}
G4IonisParamMat::GetZeffective
G4double GetZeffective() const
Definition G4IonisParamMat.hh:114
G4Material::GetDensity
G4double GetDensity() const
Definition G4Material.hh:174
G4Material::GetIonisation
G4IonisParamMat * GetIonisation() const
Definition G4Material.hh:212
G4lrint
int G4lrint(double ad)
Definition templates.hh:134

Referenced by CorrectionsAlongStep().

◆ CorrectionsAlongStep()

void G4AtimaEnergyLossModel::CorrectionsAlongStep ( const G4MaterialCutsCouple * couple,
const G4DynamicParticle * dp,
const G4double & length,
G4double & eloss )
overridevirtual

Reimplemented from G4VEmModel.

Definition at line 271 of file G4AtimaEnergyLossModel.cc.

275{
276 if(isIon) {
277 const G4ParticleDefinition* p = dp->GetDefinition();
278 const G4Material* mat = couple->GetMaterial();
279 G4double cutEnergy = DBL_MAX;
280 G4double kineticEnergy = dp->GetKineticEnergy();
281 eloss = ComputeDEDXPerVolume(mat, p, kineticEnergy, cutEnergy)*length/(cm);
282 }
283}
G4AtimaEnergyLossModel::ComputeDEDXPerVolume
G4double ComputeDEDXPerVolume(const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double) override
Definition G4AtimaEnergyLossModel.cc:251
G4DynamicParticle::GetDefinition
G4ParticleDefinition * GetDefinition() const
G4DynamicParticle::GetKineticEnergy
G4double GetKineticEnergy() const
G4MaterialCutsCouple::GetMaterial
const G4Material * GetMaterial() const
Definition G4MaterialCutsCouple.hh:166
DBL_MAX
#define DBL_MAX
Definition templates.hh:62

◆ CrossSectionPerVolume()

G4double G4AtimaEnergyLossModel::CrossSectionPerVolume ( const G4Material * material,
const G4ParticleDefinition * p,
G4double kineticEnergy,
G4double cutEnergy,
G4double maxEnergy )
overridevirtual

Reimplemented from G4VEmModel.

Definition at line 236 of file G4AtimaEnergyLossModel.cc.

242{
243 G4double eDensity = material->GetElectronDensity();
244 G4double cross = eDensity*ComputeCrossSectionPerElectron
245 (p,kineticEnergy,cutEnergy,maxEnergy);
246 return cross;
247}
G4Material::GetElectronDensity
G4double GetElectronDensity() const
Definition G4Material.hh:203

◆ GetChargeSquareRatio() [1/2]

G4double G4AtimaEnergyLossModel::GetChargeSquareRatio ( ) const
inlineprotected

Definition at line 207 of file G4AtimaEnergyLossModel.hh.

208{
209 return chargeSquare;
210}

◆ GetChargeSquareRatio() [2/2]

G4double G4AtimaEnergyLossModel::GetChargeSquareRatio ( const G4ParticleDefinition * p,
const G4Material * mat,
G4double kineticEnergy )
overridevirtual

Reimplemented from G4VEmModel.

Definition at line 130 of file G4AtimaEnergyLossModel.cc.

133{
134 // this method is called only for ions
135 G4double q2 = corr->EffectiveChargeSquareRatio(p,mat,kineticEnergy);
136 corrFactor = q2*corr->EffectiveChargeCorrection(p,mat,kineticEnergy);
137 return corrFactor;
138}

◆ GetParticleCharge()

G4double G4AtimaEnergyLossModel::GetParticleCharge ( const G4ParticleDefinition * p,
const G4Material * mat,
G4double kineticEnergy )
overridevirtual

Reimplemented from G4VEmModel.

Definition at line 142 of file G4AtimaEnergyLossModel.cc.

145{
146 //G4cout<<"G4AtimaEnergyLossModel::GetParticleCharge e= "<<kineticEnergy <<
147 // " q= " << corr->GetParticleCharge(p,mat,kineticEnergy) <<G4endl;
148 // this method is called only for ions, so no check if it is an ion
149 return corr->GetParticleCharge(p,mat,kineticEnergy);
150}

◆ Initialise()

void G4AtimaEnergyLossModel::Initialise ( const G4ParticleDefinition * p,
const G4DataVector &  )
overridevirtual

Implements G4VEmModel.

Definition at line 107 of file G4AtimaEnergyLossModel.cc.

109{
110 SetGenericIon(p);
111 SetParticle(p);
112
113 //G4cout << "G4AtimaEnergyLossModel::Initialise for " << p->GetParticleName()
114 // << " isIon= " << isIon
115 // << G4endl;
116
117 // always false before the run
118 SetDeexcitationFlag(false);
119
120 if(nullptr == fParticleChange) {
121 fParticleChange = GetParticleChangeForLoss();
122 if(UseAngularGeneratorFlag() && !GetAngularDistribution()) {
123 SetAngularDistribution(new G4DeltaAngle());
124 }
125 }
126}
G4VEmModel::GetAngularDistribution
G4VEmAngularDistribution * GetAngularDistribution()
Definition G4VEmModel.hh:599
G4VEmModel::SetDeexcitationFlag
void SetDeexcitationFlag(G4bool val)
Definition G4VEmModel.hh:780
G4VEmModel::SetAngularDistribution
void SetAngularDistribution(G4VEmAngularDistribution *)
Definition G4VEmModel.hh:606
G4VEmModel::UseAngularGeneratorFlag
G4bool UseAngularGeneratorFlag() const
Definition G4VEmModel.hh:689
G4VEmModel::GetParticleChangeForLoss
G4ParticleChangeForLoss * GetParticleChangeForLoss()
Definition G4VEmModel.cc:106

◆ MaxSecondaryEnergy()

G4double G4AtimaEnergyLossModel::MaxSecondaryEnergy ( const G4ParticleDefinition * pd,
G4double kinEnergy )
overrideprotectedvirtual

Reimplemented from G4VEmModel.

Definition at line 402 of file G4AtimaEnergyLossModel.cc.

404{
405 // here particle type is checked for any method
406 SetParticle(pd);
407 G4double tau = kinEnergy/mass;
408 G4double tmax = 2.0*electron_mass_c2*tau*(tau + 2.) /
409 (1. + 2.0*(tau + 1.)*ratio + ratio*ratio);
410 return std::min(tmax,tlimit);
411}

Referenced by ComputeCrossSectionPerElectron(), and SampleSecondaries().

◆ MinEnergyCut()

G4double G4AtimaEnergyLossModel::MinEnergyCut ( const G4ParticleDefinition * ,
const G4MaterialCutsCouple * couple )
overridevirtual

Reimplemented from G4VEmModel.

Definition at line 182 of file G4AtimaEnergyLossModel.cc.

184{
185 return couple->GetMaterial()->GetIonisation()->GetMeanExcitationEnergy();
186}
G4IonisParamMat::GetMeanExcitationEnergy
G4double GetMeanExcitationEnergy() const
Definition G4IonisParamMat.hh:57

◆ SampleSecondaries()

void G4AtimaEnergyLossModel::SampleSecondaries ( std::vector< G4DynamicParticle * > * vdp,
const G4MaterialCutsCouple * couple,
const G4DynamicParticle * dp,
G4double tmin,
G4double maxEnergy )
overridevirtual

Implements G4VEmModel.

Definition at line 287 of file G4AtimaEnergyLossModel.cc.

292{
293 G4double kineticEnergy = dp->GetKineticEnergy();
294 G4double tmax = MaxSecondaryEnergy(dp->GetDefinition(),kineticEnergy);
295
296 G4double maxKinEnergy = std::min(maxEnergy,tmax);
297 if(minKinEnergy >= maxKinEnergy) { return; }
298
299 //G4cout << "G4AtimaEnergyLossModel::SampleSecondaries Emin= " << minKinEnergy
300 // << " Emax= " << maxKinEnergy << G4endl;
301
302 G4double totEnergy = kineticEnergy + mass;
303 G4double etot2 = totEnergy*totEnergy;
304 G4double beta2 = kineticEnergy*(kineticEnergy + 2.0*mass)/etot2;
305
306 G4double deltaKinEnergy, f;
307 G4double f1 = 0.0;
308 G4double fmax = 1.0;
309 if( 0.0 < spin ) { fmax += 0.5*maxKinEnergy*maxKinEnergy/etot2; }
310
311 CLHEP::HepRandomEngine* rndmEngineMod = G4Random::getTheEngine();
312 G4double rndm[2];
313
314 // sampling without nuclear size effect
315 do {
316 rndmEngineMod->flatArray(2, rndm);
317 deltaKinEnergy = minKinEnergy*maxKinEnergy
318 /(minKinEnergy*(1.0 - rndm[0]) + maxKinEnergy*rndm[0]);
319
320 f = 1.0 - beta2*deltaKinEnergy/tmax;
321 if( 0.0 < spin ) {
322 f1 = 0.5*deltaKinEnergy*deltaKinEnergy/etot2;
323 f += f1;
324 }
325
326 // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
327 } while( fmax*rndm[1] > f);
328
329 // projectile formfactor - suppresion of high energy
330 // delta-electron production at high energy
331
332 G4double x = formfact*deltaKinEnergy*(deltaKinEnergy + 2*electron_mass_c2);
333 if(x > 1.e-6) {
334
335 G4double x10 = 1.0 + x;
336 G4double grej = 1.0/(x10*x10);
337 if( 0.0 < spin ) {
338 G4double x2 = 0.5*electron_mass_c2*deltaKinEnergy/(mass*mass);
339 grej *= (1.0 + magMoment2*(x2 - f1/f)/(1.0 + x2));
340 }
341 if(grej > 1.1) {
342 G4cout << "### G4AtimaEnergyLossModel WARNING: grej= " << grej
343 << " " << dp->GetDefinition()->GetParticleName()
344 << " Ekin(MeV)= " << kineticEnergy
345 << " delEkin(MeV)= " << deltaKinEnergy
346 << G4endl;
347 }
348 if(rndmEngineMod->flat() > grej) { return; }
349 }
350
351 G4ThreeVector deltaDirection;
352
353 if(UseAngularGeneratorFlag()) {
354
355 const G4Material* mat = couple->GetMaterial();
356 G4int Z = SelectRandomAtomNumber(mat);
357
358 deltaDirection =
359 GetAngularDistribution()->SampleDirection(dp, deltaKinEnergy, Z, mat);
360
361 } else {
362
363 G4double deltaMomentum =
364 std::sqrt(deltaKinEnergy * (deltaKinEnergy + 2.0*electron_mass_c2));
365 G4double cost = deltaKinEnergy * (totEnergy + electron_mass_c2) /
366 (deltaMomentum * dp->GetTotalMomentum());
367 if(cost > 1.0) { cost = 1.0; }
368 G4double sint = std::sqrt((1.0 - cost)*(1.0 + cost));
369
370 G4double phi = twopi*rndmEngineMod->flat();
371
372 deltaDirection.set(sint*cos(phi),sint*sin(phi), cost) ;
373 deltaDirection.rotateUz(dp->GetMomentumDirection());
374 }
375 /*
376 G4cout << "### G4AtimaEnergyLossModel "
377 << dp->GetDefinition()->GetParticleName()
378 << " Ekin(MeV)= " << kineticEnergy
379 << " delEkin(MeV)= " << deltaKinEnergy
380 << " tmin(MeV)= " << minKinEnergy
381 << " tmax(MeV)= " << maxKinEnergy
382 << " dir= " << dp->GetMomentumDirection()
383 << " dirDelta= " << deltaDirection
384 << G4endl;
385 */
386 // create G4DynamicParticle object for delta ray
387 auto delta = new G4DynamicParticle(theElectron,deltaDirection,deltaKinEnergy);
388
389 vdp->push_back(delta);
390
391 // Change kinematics of primary particle
392 kineticEnergy -= deltaKinEnergy;
393 G4ThreeVector finalP = dp->GetMomentum() - delta->GetMomentum();
394 finalP = finalP.unit();
395
396 fParticleChange->SetProposedKineticEnergy(kineticEnergy);
397 fParticleChange->SetProposedMomentumDirection(finalP);
398}
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition G4ThreeVector.hh:36
G4endl
#define G4endl
Definition G4ios.hh:67
G4cout
G4GLOB_DLL std::ostream G4cout
CLHEP::Hep3Vector::unit
Hep3Vector unit() const
CLHEP::Hep3Vector::set
void set(double x, double y, double z)
CLHEP::Hep3Vector::rotateUz
Hep3Vector & rotateUz(const Hep3Vector &)
Definition ThreeVector.cc:33
CLHEP::HepRandomEngine::flat
virtual double flat()=0
CLHEP::HepRandomEngine::flatArray
virtual void flatArray(const int size, double *vect)=0
G4DynamicParticle::GetMomentumDirection
const G4ThreeVector & GetMomentumDirection() const
G4DynamicParticle::GetMomentum
G4ThreeVector GetMomentum() const
G4DynamicParticle::GetTotalMomentum
G4double GetTotalMomentum() const
G4ParticleDefinition::GetParticleName
const G4String & GetParticleName() const
Definition G4ParticleDefinition.hh:96
G4VEmAngularDistribution::SampleDirection
virtual G4ThreeVector & SampleDirection(const G4DynamicParticle *dp, G4double finalTotalEnergy, G4int Z, const G4Material *)=0
G4VEmModel::SelectRandomAtomNumber
G4int SelectRandomAtomNumber(const G4Material *) const
Definition G4VEmModel.cc:251

◆ SetChargeSquareRatio()

void G4AtimaEnergyLossModel::SetChargeSquareRatio ( G4double val)
inlineprotected

Definition at line 214 of file G4AtimaEnergyLossModel.hh.

215{
216 chargeSquare = val;
217}
The documentation for this class was generated from the following files: