Geant4  10.02.p03
G4mplIonisationWithDeltaModel Class Reference

#include <G4mplIonisationWithDeltaModel.hh>

Inheritance diagram for G4mplIonisationWithDeltaModel:
Collaboration diagram for G4mplIonisationWithDeltaModel:

Public Member Functions

 G4mplIonisationWithDeltaModel (G4double mCharge, const G4String &nam="mplIonisationWithDelta")
 
virtual ~G4mplIonisationWithDeltaModel ()
 
virtual void Initialise (const G4ParticleDefinition *, const G4DataVector &)
 
virtual G4double ComputeDEDXPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy)
 
virtual G4double ComputeCrossSectionPerElectron (const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy, G4double maxEnergy)
 
virtual G4double ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kineticEnergy, G4double Z, G4double A, G4double cutEnergy, G4double maxEnergy)
 
virtual void SampleSecondaries (std::vector< G4DynamicParticle *> *, const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmin, G4double maxEnergy)
 
virtual G4double SampleFluctuations (const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmax, G4double length, G4double meanLoss)
 
virtual G4double Dispersion (const G4Material *, const G4DynamicParticle *, G4double tmax, G4double length)
 
void SetParticle (const G4ParticleDefinition *p)
 
- 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 CrossSectionPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
virtual G4double GetPartialCrossSection (const G4Material *, G4int, const G4ParticleDefinition *, G4double)
 
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 *> *)
 
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)
 
G4int SelectIsotopeNumber (const G4Element *)
 
const G4ElementSelectRandomAtom (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
const G4ElementSelectRandomAtom (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
 
G4int SelectRandomAtomNumber (const G4Material *)
 
void SetParticleChange (G4VParticleChange *, G4VEmFluctuationModel *f=0)
 
void SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)
 
G4ElementDataGetElementData ()
 
G4PhysicsTableGetCrossSectionTable ()
 
G4VEmFluctuationModelGetModelOfFluctuations ()
 
G4VEmAngularDistributionGetAngularDistribution ()
 
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)
 
void SetPolarAngleLimit (G4double)
 
void SetSecondaryThreshold (G4double)
 
void SetLPMFlag (G4bool val)
 
void SetDeexcitationFlag (G4bool val)
 
void SetForceBuildTable (G4bool val)
 
void SetMasterThread (G4bool val)
 
G4bool IsMaster () const
 
G4double MaxSecondaryKinEnergy (const G4DynamicParticle *dynParticle)
 
const G4StringGetName () const
 
void SetCurrentCouple (const G4MaterialCutsCouple *)
 
const G4ElementGetCurrentElement () const
 
const G4IsotopeGetCurrentIsotope () const
 
G4bool IsLocked () const
 
void SetLocked (G4bool)
 
- Public Member Functions inherited from G4VEmFluctuationModel
 G4VEmFluctuationModel (const G4String &nam)
 
virtual ~G4VEmFluctuationModel ()
 
virtual void InitialiseMe (const G4ParticleDefinition *)
 
virtual void SetParticleAndCharge (const G4ParticleDefinition *, G4double q2)
 
const G4StringGetName () const
 

Protected Member Functions

virtual G4double MaxSecondaryEnergy (const G4ParticleDefinition *, G4double kinEnergy)
 
- Protected Member Functions inherited from G4VEmModel
G4ParticleChangeForLoss * GetParticleChangeForLoss ()
 
G4ParticleChangeForGamma * GetParticleChangeForGamma ()
 
const G4MaterialCutsCoupleCurrentCouple () const
 
void SetCurrentElement (const G4Element *)
 

Private Member Functions

G4double ComputeDEDXAhlen (const G4Material *material, G4double bg2, G4double cut)
 
G4mplIonisationWithDeltaModeloperator= (const G4mplIonisationWithDeltaModel &right)
 
 G4mplIonisationWithDeltaModel (const G4mplIonisationWithDeltaModel &)
 

Private Attributes

const G4ParticleDefinitionmonopole
 
G4ParticleDefinitiontheElectron
 
G4ParticleChangeForLoss * fParticleChange
 
G4double mass
 
G4double magCharge
 
G4double twoln10
 
G4double betalow
 
G4double betalim
 
G4double beta2lim
 
G4double bg2lim
 
G4double chargeSquare
 
G4double dedxlim
 
G4int nmpl
 
G4double pi_hbarc2_over_mc2
 

Static Private Attributes

static std::vector< G4double > * dedx0 = 0
 

Additional Inherited Members

- Protected Attributes inherited from G4VEmModel
G4ElementDatafElementData
 
G4VParticleChange * pParticleChange
 
G4PhysicsTablexSectionTable
 
const std::vector< G4double > * theDensityFactor
 
const std::vector< G4int > * theDensityIdx
 
size_t idxTable
 
- Static Protected Attributes inherited from G4VEmModel
static const G4double inveplus = 1.0/CLHEP::eplus
 

Detailed Description

Definition at line 58 of file G4mplIonisationWithDeltaModel.hh.

Constructor & Destructor Documentation

◆ G4mplIonisationWithDeltaModel() [1/2]

G4mplIonisationWithDeltaModel::G4mplIonisationWithDeltaModel ( G4double  mCharge,
const G4String nam = "mplIonisationWithDelta" 
)

Definition at line 73 of file G4mplIonisationWithDeltaModel.cc.

76  magCharge(mCharge),
77  twoln10(log(100.0)),
78  betalow(0.01),
79  betalim(0.1),
81  bg2lim(beta2lim*(1.0 + beta2lim))
82 {
83  nmpl = G4lrint(std::fabs(magCharge) * 2 * fine_structure_const);
84  if(nmpl > 6) { nmpl = 6; }
85  else if(nmpl < 1) { nmpl = 1; }
88  dedxlim = 45.*nmpl*nmpl*GeV*cm2/g;
89  fParticleChange = 0;
91  G4cout << "### Monopole ionisation model with d-electron production, Gmag= "
92  << magCharge/eplus << G4endl;
93  monopole = 0;
94  mass = 0.0;
95 }
static const double cm2
Definition: G4SIunits.hh:119
G4VEmModel(const G4String &nam)
Definition: G4VEmModel.cc:69
function g(Y1, Y2, PT2)
Definition: hijing1.383.f:5206
int fine_structure_const
Definition: hepunit.py:287
G4GLOB_DLL std::ostream G4cout
float hbarc
Definition: hepunit.py:265
static const double GeV
Definition: G4SIunits.hh:214
float electron_mass_c2
Definition: hepunit.py:274
static const double pi
Definition: G4SIunits.hh:74
int G4lrint(double ad)
Definition: templates.hh:163
static G4Electron * Electron()
Definition: G4Electron.cc:94
#define G4endl
Definition: G4ios.hh:61
G4VEmFluctuationModel(const G4String &nam)
static const double eplus
Definition: G4SIunits.hh:196
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◆ ~G4mplIonisationWithDeltaModel()

G4mplIonisationWithDeltaModel::~G4mplIonisationWithDeltaModel ( )
virtual

Definition at line 99 of file G4mplIonisationWithDeltaModel.cc.

100 {
101  if(IsMaster()) { delete dedx0; }
102 }
G4bool IsMaster() const
Definition: G4VEmModel.hh:718
static std::vector< G4double > * dedx0
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◆ G4mplIonisationWithDeltaModel() [2/2]

G4mplIonisationWithDeltaModel::G4mplIonisationWithDeltaModel ( const G4mplIonisationWithDeltaModel )
private

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

G4double G4mplIonisationWithDeltaModel::ComputeCrossSectionPerAtom ( const G4ParticleDefinition p,
G4double  kineticEnergy,
G4double  Z,
G4double  A,
G4double  cutEnergy,
G4double  maxEnergy 
)
virtual

Reimplemented from G4VEmModel.

Definition at line 248 of file G4mplIonisationWithDeltaModel.cc.

254 {
255  G4double cross =
256  Z*ComputeCrossSectionPerElectron(p,kineticEnergy,cutEnergy,maxEnergy);
257  return cross;
258 }
virtual G4double ComputeCrossSectionPerElectron(const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy, G4double maxEnergy)
Float_t Z
double G4double
Definition: G4Types.hh:76
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◆ ComputeCrossSectionPerElectron()

G4double G4mplIonisationWithDeltaModel::ComputeCrossSectionPerElectron ( const G4ParticleDefinition p,
G4double  kineticEnergy,
G4double  cutEnergy,
G4double  maxEnergy 
)
virtual

Definition at line 228 of file G4mplIonisationWithDeltaModel.cc.

233 {
234  if(!monopole) { SetParticle(p); }
235  G4double cross = 0.0;
236  G4double tmax = MaxSecondaryEnergy(p, kineticEnergy);
237  G4double maxEnergy = std::min(tmax,maxKinEnergy);
238  G4double cutEnergy = std::max(LowEnergyLimit(), cut);
239  if(cutEnergy < maxEnergy) {
240  cross = (0.5/cutEnergy - 0.5/maxEnergy)*pi_hbarc2_over_mc2 * nmpl * nmpl;
241  }
242  return cross;
243 }
G4double LowEnergyLimit() const
Definition: G4VEmModel.hh:641
void SetParticle(const G4ParticleDefinition *p)
virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition *, G4double kinEnergy)
double G4double
Definition: G4Types.hh:76
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◆ ComputeDEDXAhlen()

G4double G4mplIonisationWithDeltaModel::ComputeDEDXAhlen ( const G4Material material,
G4double  bg2,
G4double  cut 
)
private

Definition at line 194 of file G4mplIonisationWithDeltaModel.cc.

197 {
198  G4double eDensity = material->GetElectronDensity();
199  G4double eexc = material->GetIonisation()->GetMeanExcitationEnergy();
200 
201  // Ahlen's formula for nonconductors, [1]p157, f(5.7)
202  G4double dedx =
203  0.5*(log(2.0 * electron_mass_c2 * bg2*cutEnergy / (eexc*eexc)) - 1.0);
204 
205  // Kazama et al. cross-section correction
206  G4double k = 0.406;
207  if(nmpl > 1) { k = 0.346; }
208 
209  // Bloch correction
210  const G4double B[7] = { 0.0, 0.248, 0.672, 1.022, 1.243, 1.464, 1.685};
211 
212  dedx += 0.5 * k - B[nmpl];
213 
214  // density effect correction
215  G4double x = G4Log(bg2)/twoln10;
216  dedx -= material->GetIonisation()->DensityCorrection(x);
217 
218  // now compute the total ionization loss
219  dedx *= pi_hbarc2_over_mc2 * eDensity * nmpl * nmpl;
220 
221  if (dedx < 0.0) { dedx = 0; }
222  return dedx;
223 }
G4IonisParamMat * GetIonisation() const
Definition: G4Material.hh:226
G4double GetMeanExcitationEnergy() const
float electron_mass_c2
Definition: hepunit.py:274
G4double G4Log(G4double x)
Definition: G4Log.hh:230
G4double DensityCorrection(G4double x)
G4double GetElectronDensity() const
Definition: G4Material.hh:217
double G4double
Definition: G4Types.hh:76
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◆ ComputeDEDXPerVolume()

G4double G4mplIonisationWithDeltaModel::ComputeDEDXPerVolume ( const G4Material material,
const G4ParticleDefinition p,
G4double  kineticEnergy,
G4double  cutEnergy 
)
virtual

Reimplemented from G4VEmModel.

Definition at line 150 of file G4mplIonisationWithDeltaModel.cc.

154 {
155  if(!monopole) { SetParticle(p); }
156  G4double tmax = MaxSecondaryEnergy(p,kineticEnergy);
157  G4double cutEnergy = std::min(tmax, maxEnergy);
158  cutEnergy = std::max(LowEnergyLimit(), cutEnergy);
159  G4double tau = kineticEnergy / mass;
160  G4double gam = tau + 1.0;
161  G4double bg2 = tau * (tau + 2.0);
162  G4double beta2 = bg2 / (gam * gam);
163  G4double beta = sqrt(beta2);
164 
165  // low-energy asymptotic formula
166  //G4double dedx = dedxlim*beta*material->GetDensity();
167  G4double dedx = (*dedx0)[CurrentCouple()->GetIndex()]*beta;
168 
169  // above asymptotic
170  if(beta > betalow) {
171 
172  // high energy
173  if(beta >= betalim) {
174  dedx = ComputeDEDXAhlen(material, bg2, cutEnergy);
175 
176  } else {
177 
178  //G4double dedx1 = dedxlim*betalow*material->GetDensity();
179  G4double dedx1 = (*dedx0)[CurrentCouple()->GetIndex()]*betalow;
180  G4double dedx2 = ComputeDEDXAhlen(material, bg2lim, cutEnergy);
181 
182  // extrapolation between two formula
183  G4double kapa2 = beta - betalow;
184  G4double kapa1 = betalim - beta;
185  dedx = (kapa1*dedx1 + kapa2*dedx2)/(kapa1 + kapa2);
186  }
187  }
188  return dedx;
189 }
G4double LowEnergyLimit() const
Definition: G4VEmModel.hh:641
void SetParticle(const G4ParticleDefinition *p)
const G4MaterialCutsCouple * CurrentCouple() const
Definition: G4VEmModel.hh:452
virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition *, G4double kinEnergy)
G4double ComputeDEDXAhlen(const G4Material *material, G4double bg2, G4double cut)
double G4double
Definition: G4Types.hh:76
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◆ Dispersion()

G4double G4mplIonisationWithDeltaModel::Dispersion ( const G4Material material,
const G4DynamicParticle dp,
G4double  tmax,
G4double  length 
)
virtual

Implements G4VEmFluctuationModel.

Definition at line 352 of file G4mplIonisationWithDeltaModel.cc.

356 {
357  G4double siga = 0.0;
358  G4double tau = dp->GetKineticEnergy()/mass;
359  if(tau > 0.0) {
360  G4double electronDensity = material->GetElectronDensity();
361  G4double gam = tau + 1.0;
362  G4double invbeta2 = (gam*gam)/(tau * (tau+2.0));
363  siga = (invbeta2 - 0.5) * twopi_mc2_rcl2 * tmax * length
364  * electronDensity * chargeSquare;
365  }
366  return siga;
367 }
int twopi_mc2_rcl2
Definition: hepunit.py:294
G4double GetKineticEnergy() const
G4double GetElectronDensity() const
Definition: G4Material.hh:217
double G4double
Definition: G4Types.hh:76
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◆ Initialise()

void G4mplIonisationWithDeltaModel::Initialise ( const G4ParticleDefinition p,
const G4DataVector  
)
virtual

Implements G4VEmModel.

Definition at line 121 of file G4mplIonisationWithDeltaModel.cc.

123 {
124  if(!monopole) { SetParticle(p); }
126  if(IsMaster()) {
127  if(!dedx0) { dedx0 = new std::vector<G4double>; }
128  G4ProductionCutsTable* theCoupleTable=
130  G4int numOfCouples = theCoupleTable->GetTableSize();
131  G4int n = dedx0->size();
132  if(n < numOfCouples) { dedx0->resize(numOfCouples); }
133 
134  // initialise vector
135  for(G4int i=0; i<numOfCouples; ++i) {
136 
137  const G4Material* material =
138  theCoupleTable->GetMaterialCutsCouple(i)->GetMaterial();
139  G4double eDensity = material->GetElectronDensity();
140  G4double vF = electron_Compton_length*pow(3*pi*pi*eDensity,0.3333333333);
141  (*dedx0)[i] = pi_hbarc2_over_mc2*eDensity*nmpl*nmpl*
142  (G4Log(2*vF/fine_structure_const) - 0.5)/vF;
143  }
144  }
145 }
G4ParticleChangeForLoss * GetParticleChangeForLoss()
Definition: G4VEmModel.cc:120
const G4Material * GetMaterial() const
G4bool IsMaster() const
Definition: G4VEmModel.hh:718
void SetParticle(const G4ParticleDefinition *p)
int G4int
Definition: G4Types.hh:78
string material
Definition: eplot.py:19
static std::vector< G4double > * dedx0
int fine_structure_const
Definition: hepunit.py:287
Char_t n[5]
float electron_Compton_length
Definition: hepunit.py:289
G4double G4Log(G4double x)
Definition: G4Log.hh:230
static G4ProductionCutsTable * GetProductionCutsTable()
const G4MaterialCutsCouple * GetMaterialCutsCouple(G4int i) const
static const double pi
Definition: G4SIunits.hh:74
G4double GetElectronDensity() const
Definition: G4Material.hh:217
double G4double
Definition: G4Types.hh:76
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◆ MaxSecondaryEnergy()

G4double G4mplIonisationWithDeltaModel::MaxSecondaryEnergy ( const G4ParticleDefinition ,
G4double  kinEnergy 
)
protectedvirtual

Reimplemented from G4VEmModel.

Definition at line 372 of file G4mplIonisationWithDeltaModel.cc.

374 {
375  G4double tau = kinEnergy/mass;
376  return 2.0*electron_mass_c2*tau*(tau + 2.);
377 }
float electron_mass_c2
Definition: hepunit.py:274
double G4double
Definition: G4Types.hh:76
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◆ operator=()

G4mplIonisationWithDeltaModel& G4mplIonisationWithDeltaModel::operator= ( const G4mplIonisationWithDeltaModel right)
private

◆ SampleFluctuations()

G4double G4mplIonisationWithDeltaModel::SampleFluctuations ( const G4MaterialCutsCouple couple,
const G4DynamicParticle dp,
G4double  tmax,
G4double  length,
G4double  meanLoss 
)
virtual

Implements G4VEmFluctuationModel.

Definition at line 321 of file G4mplIonisationWithDeltaModel.cc.

327 {
328  G4double siga = Dispersion(couple->GetMaterial(),dp,tmax,length);
329  G4double loss = meanLoss;
330  siga = sqrt(siga);
331  G4double twomeanLoss = meanLoss + meanLoss;
332 
333  if(twomeanLoss < siga) {
334  G4double x;
335  do {
336  loss = twomeanLoss*G4UniformRand();
337  x = (loss - meanLoss)/siga;
338  // Loop checking, 07-Aug-2015, Vladimir Ivanchenko
339  } while (1.0 - 0.5*x*x < G4UniformRand());
340  } else {
341  do {
342  loss = G4RandGauss::shoot(meanLoss,siga);
343  // Loop checking, 07-Aug-2015, Vladimir Ivanchenko
344  } while (0.0 > loss || loss > twomeanLoss);
345  }
346  return loss;
347 }
ThreeVector shoot(const G4int Ap, const G4int Af)
const G4Material * GetMaterial() const
virtual G4double Dispersion(const G4Material *, const G4DynamicParticle *, G4double tmax, G4double length)
#define G4UniformRand()
Definition: Randomize.hh:97
double G4double
Definition: G4Types.hh:76
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◆ SampleSecondaries()

void G4mplIonisationWithDeltaModel::SampleSecondaries ( std::vector< G4DynamicParticle *> *  vdp,
const G4MaterialCutsCouple ,
const G4DynamicParticle dp,
G4double  tmin,
G4double  maxEnergy 
)
virtual

Implements G4VEmModel.

Definition at line 263 of file G4mplIonisationWithDeltaModel.cc.

268 {
269  G4double kineticEnergy = dp->GetKineticEnergy();
270  G4double tmax = MaxSecondaryEnergy(dp->GetDefinition(),kineticEnergy);
271 
272  G4double maxKinEnergy = std::min(maxEnergy,tmax);
273  if(minKinEnergy >= maxKinEnergy) { return; }
274 
275  //G4cout << "G4mplIonisationWithDeltaModel::SampleSecondaries: E(GeV)= "
276  // << kineticEnergy/GeV << " M(GeV)= " << mass/GeV
277  // << " tmin(MeV)= " << minKinEnergy/MeV << G4endl;
278 
279  G4double totEnergy = kineticEnergy + mass;
280  G4double etot2 = totEnergy*totEnergy;
281  G4double beta2 = kineticEnergy*(kineticEnergy + 2.0*mass)/etot2;
282 
283  // sampling without nuclear size effect
284  G4double q = G4UniformRand();
285  G4double deltaKinEnergy = minKinEnergy*maxKinEnergy
286  /(minKinEnergy*(1.0 - q) + maxKinEnergy*q);
287 
288  // delta-electron is produced
289  G4double totMomentum = totEnergy*sqrt(beta2);
290  G4double deltaMomentum =
291  sqrt(deltaKinEnergy * (deltaKinEnergy + 2.0*electron_mass_c2));
292  G4double cost = deltaKinEnergy * (totEnergy + electron_mass_c2) /
293  (deltaMomentum * totMomentum);
294  if(cost > 1.0) { cost = 1.0; }
295 
296  G4double sint = sqrt((1.0 - cost)*(1.0 + cost));
297 
298  G4double phi = twopi * G4UniformRand() ;
299 
300  G4ThreeVector deltaDirection(sint*cos(phi),sint*sin(phi), cost);
301  G4ThreeVector direction = dp->GetMomentumDirection();
302  deltaDirection.rotateUz(direction);
303 
304  // create G4DynamicParticle object for delta ray
305  G4DynamicParticle* delta =
306  new G4DynamicParticle(theElectron,deltaDirection,deltaKinEnergy);
307 
308  vdp->push_back(delta);
309 
310  // Change kinematics of primary particle
311  kineticEnergy -= deltaKinEnergy;
312  G4ThreeVector finalP = direction*totMomentum - deltaDirection*deltaMomentum;
313  finalP = finalP.unit();
314 
315  fParticleChange->SetProposedKineticEnergy(kineticEnergy);
316  fParticleChange->SetProposedMomentumDirection(finalP);
317 }
virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition *, G4double kinEnergy)
G4double GetKineticEnergy() const
#define G4UniformRand()
Definition: Randomize.hh:97
Hep3Vector unit() const
Hep3Vector & rotateUz(const Hep3Vector &)
Definition: ThreeVector.cc:38
static const double twopi
Definition: G4SIunits.hh:75
float electron_mass_c2
Definition: hepunit.py:274
const G4ThreeVector & GetMomentumDirection() const
G4ParticleDefinition * GetDefinition() const
double G4double
Definition: G4Types.hh:76
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◆ SetParticle()

void G4mplIonisationWithDeltaModel::SetParticle ( const G4ParticleDefinition p)

Definition at line 106 of file G4mplIonisationWithDeltaModel.cc.

107 {
108  monopole = p;
109  mass = monopole->GetPDGMass();
110  G4double emin =
111  std::min(LowEnergyLimit(),0.1*mass*(1/sqrt(1 - betalow*betalow) - 1));
112  G4double emax =
113  std::max(HighEnergyLimit(),10*mass*(1/sqrt(1 - beta2lim) - 1));
114  SetLowEnergyLimit(emin);
115  SetHighEnergyLimit(emax);
116 }
G4double LowEnergyLimit() const
Definition: G4VEmModel.hh:641
void SetHighEnergyLimit(G4double)
Definition: G4VEmModel.hh:725
G4double HighEnergyLimit() const
Definition: G4VEmModel.hh:634
static const G4double emax
double G4double
Definition: G4Types.hh:76
void SetLowEnergyLimit(G4double)
Definition: G4VEmModel.hh:732
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Member Data Documentation

◆ beta2lim

G4double G4mplIonisationWithDeltaModel::beta2lim
private

Definition at line 130 of file G4mplIonisationWithDeltaModel.hh.

◆ betalim

G4double G4mplIonisationWithDeltaModel::betalim
private

Definition at line 129 of file G4mplIonisationWithDeltaModel.hh.

◆ betalow

G4double G4mplIonisationWithDeltaModel::betalow
private

Definition at line 128 of file G4mplIonisationWithDeltaModel.hh.

◆ bg2lim

G4double G4mplIonisationWithDeltaModel::bg2lim
private

Definition at line 131 of file G4mplIonisationWithDeltaModel.hh.

◆ chargeSquare

G4double G4mplIonisationWithDeltaModel::chargeSquare
private

Definition at line 132 of file G4mplIonisationWithDeltaModel.hh.

◆ dedx0

std::vector< G4double > * G4mplIonisationWithDeltaModel::dedx0 = 0
staticprivate

Definition at line 137 of file G4mplIonisationWithDeltaModel.hh.

◆ dedxlim

G4double G4mplIonisationWithDeltaModel::dedxlim
private

Definition at line 133 of file G4mplIonisationWithDeltaModel.hh.

◆ fParticleChange

G4ParticleChangeForLoss* G4mplIonisationWithDeltaModel::fParticleChange
private

Definition at line 123 of file G4mplIonisationWithDeltaModel.hh.

◆ magCharge

G4double G4mplIonisationWithDeltaModel::magCharge
private

Definition at line 126 of file G4mplIonisationWithDeltaModel.hh.

◆ mass

G4double G4mplIonisationWithDeltaModel::mass
private

Definition at line 125 of file G4mplIonisationWithDeltaModel.hh.

◆ monopole

const G4ParticleDefinition* G4mplIonisationWithDeltaModel::monopole
private

Definition at line 121 of file G4mplIonisationWithDeltaModel.hh.

◆ nmpl

G4int G4mplIonisationWithDeltaModel::nmpl
private

Definition at line 134 of file G4mplIonisationWithDeltaModel.hh.

◆ pi_hbarc2_over_mc2

G4double G4mplIonisationWithDeltaModel::pi_hbarc2_over_mc2
private

Definition at line 135 of file G4mplIonisationWithDeltaModel.hh.

◆ theElectron

G4ParticleDefinition* G4mplIonisationWithDeltaModel::theElectron
private

Definition at line 122 of file G4mplIonisationWithDeltaModel.hh.

◆ twoln10

G4double G4mplIonisationWithDeltaModel::twoln10
private

Definition at line 127 of file G4mplIonisationWithDeltaModel.hh.


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