G4ICRU49NuclearStoppingModel Class Reference

#include <G4ICRU49NuclearStoppingModel.hh>

Inheritance diagram for G4ICRU49NuclearStoppingModel:

Collaboration diagram for G4ICRU49NuclearStoppingModel:

Public Member Functions
	G4ICRU49NuclearStoppingModel (const G4String &nam="ICRU49NucStopping")
virtual	~G4ICRU49NuclearStoppingModel ()
virtual void	Initialise (const G4ParticleDefinition *, const G4DataVector &)
virtual G4double	ComputeDEDXPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=DBL_MAX)
virtual void	SampleSecondaries (std::vector< G4DynamicParticle *> *, const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double, G4double)
void	SetFluctuationFlag (G4bool)
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	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 *> *)
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 G4Element *	SelectRandomAtom (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, 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 *)
void	SetParticleChange (G4VParticleChange *, G4VEmFluctuationModel *f=0)
void	SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)
G4ElementData *	GetElementData ()
G4PhysicsTable *	GetCrossSectionTable ()
G4VEmFluctuationModel *	GetModelOfFluctuations ()
G4VEmAngularDistribution *	GetAngularDistribution ()
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 G4String &	GetName () const
void	SetCurrentCouple (const G4MaterialCutsCouple *)
const G4Element *	GetCurrentElement () const
const G4Isotope *	GetCurrentIsotope () const
G4bool	IsLocked () const
void	SetLocked (G4bool)

Private Member Functions
void	InitialiseNuclearStopping ()
G4double	NuclearStoppingPower (G4double kineticEnergy, G4double Z1, G4double Z2, G4double A1, G4double A2)
G4ICRU49NuclearStoppingModel &	operator= (const G4ICRU49NuclearStoppingModel &right)
	G4ICRU49NuclearStoppingModel (const G4ICRU49NuclearStoppingModel &)

Private Attributes
G4Pow *	g4pow
G4double	theZieglerFactor
G4bool	lossFlucFlag

Static Private Attributes
static G4double	ed [104] = {0.0}
static G4double	ad [104] = {0.0}

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
G4VParticleChange *	pParticleChange
G4PhysicsTable *	xSectionTable
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 62 of file G4ICRU49NuclearStoppingModel.hh.

Constructor & Destructor Documentation

G4ICRU49NuclearStoppingModel() [1/2]

G4ICRU49NuclearStoppingModel::G4ICRU49NuclearStoppingModel

(

const G4String &

nam = "ICRU49NucStopping"

)

Definition at line 70 of file G4ICRU49NuclearStoppingModel.cc.

  : G4VEmModel(nam),lossFlucFlag(false)
{
  theZieglerFactor = eV*cm2*1.0e-15;
  g4pow = G4Pow::GetInstance();
  if(ad[0] == 0.0) { InitialiseNuclearStopping(); }
}

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~G4ICRU49NuclearStoppingModel()

G4ICRU49NuclearStoppingModel::~G4ICRU49NuclearStoppingModel ( )

virtual

Definition at line 80 of file G4ICRU49NuclearStoppingModel.cc.

{}

G4ICRU49NuclearStoppingModel() [2/2]

G4ICRU49NuclearStoppingModel::G4ICRU49NuclearStoppingModel ( const G4ICRU49NuclearStoppingModel &  )

private

Member Function Documentation

ComputeDEDXPerVolume()

G4double G4ICRU49NuclearStoppingModel::ComputeDEDXPerVolume ( const G4Material *  mat, const G4ParticleDefinition *  p, G4double  kineticEnergy, G4double  cutEnergy = DBL_MAX  )

virtual

Reimplemented from G4VEmModel.

Definition at line 102 of file G4ICRU49NuclearStoppingModel.cc.

{
  G4double nloss = 0.0;
  if(kinEnergy <= 0.0) { return nloss; }

  // projectile
  G4double mass1 = p->GetPDGMass();
  G4double z1 = std::fabs(p->GetPDGCharge()/eplus);

  if(kinEnergy*proton_mass_c2/mass1 > z1*z1*MeV) { return nloss; }

  // Projectile nucleus
  mass1 /= amu_c2;

  //  loop for the elements in the material
  G4int numberOfElements = mat->GetNumberOfElements();
  const G4ElementVector* theElementVector = mat->GetElementVector();
  const G4double* atomDensity  = mat->GetAtomicNumDensityVector();
 
  for (G4int iel=0; iel<numberOfElements; iel++) {
    const G4Element* element = (*theElementVector)[iel] ;
    G4double z2 = element->GetZ();
    G4double mass2 = element->GetN();
    nloss += (NuclearStoppingPower(kinEnergy, z1, z2, mass1, mass2))
           * atomDensity[iel] ;
  }
  nloss *= theZieglerFactor;
  return nloss;
}

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Initialise()

void G4ICRU49NuclearStoppingModel::Initialise ( const G4ParticleDefinition *  , const G4DataVector &    )

virtual

Implements G4VEmModel.

Definition at line 85 of file G4ICRU49NuclearStoppingModel.cc.

{}

InitialiseNuclearStopping()

void G4ICRU49NuclearStoppingModel::InitialiseNuclearStopping ( )

private

Definition at line 187 of file G4ICRU49NuclearStoppingModel.cc.

{
  const G4double nuca[104][2] = {
  { 1.0E+8, 5.831E-8},
  { 8.0E+7, 7.288E-8},
  { 6.0E+7, 9.719E-8},
  { 5.0E+7, 1.166E-7},
  { 4.0E+7, 1.457E-7},
  { 3.0E+7, 1.942E-7},
  { 2.0E+7, 2.916E-7},
  { 1.5E+7, 3.887E-7},

  { 1.0E+7, 5.833E-7},
  { 8.0E+6, 7.287E-7},
  { 6.0E+6, 9.712E-7},
  { 5.0E+6, 1.166E-6},
  { 4.0E+6, 1.457E-6},
  { 3.0E+6, 1.941E-6},
  { 2.0E+6, 2.911E-6},
  { 1.5E+6, 3.878E-6},

  { 1.0E+6, 5.810E-6},
  { 8.0E+5, 7.262E-6},
  { 6.0E+5, 9.663E-6},
  { 5.0E+5, 1.157E-5},
  { 4.0E+5, 1.442E-5},
  { 3.0E+5, 1.913E-5},
  { 2.0E+5, 2.845E-5},
  { 1.5E+5, 3.762E-5},

  { 1.0E+5, 5.554E-5},
  { 8.0E+4, 6.866E-5},
  { 6.0E+4, 9.020E-5},
  { 5.0E+4, 1.070E-4},
  { 4.0E+4, 1.319E-4},
  { 3.0E+4, 1.722E-4},
  { 2.0E+4, 2.499E-4},
  { 1.5E+4, 3.248E-4},

  { 1.0E+4, 4.688E-4},
  { 8.0E+3, 5.729E-4},
  { 6.0E+3, 7.411E-4},
  { 5.0E+3, 8.718E-4},
  { 4.0E+3, 1.063E-3},
  { 3.0E+3, 1.370E-3},
  { 2.0E+3, 1.955E-3},
  { 1.5E+3, 2.511E-3},

  { 1.0E+3, 3.563E-3},
  { 8.0E+2, 4.314E-3},
  { 6.0E+2, 5.511E-3},
  { 5.0E+2, 6.430E-3},
  { 4.0E+2, 7.756E-3},
  { 3.0E+2, 9.855E-3},
  { 2.0E+2, 1.375E-2},
  { 1.5E+2, 1.736E-2},

  { 1.0E+2, 2.395E-2},
  { 8.0E+1, 2.850E-2},
  { 6.0E+1, 3.552E-2},
  { 5.0E+1, 4.073E-2},
  { 4.0E+1, 4.802E-2},
  { 3.0E+1, 5.904E-2},
  { 1.5E+1, 9.426E-2},

  { 1.0E+1, 1.210E-1},
  { 8.0E+0, 1.377E-1},
  { 6.0E+0, 1.611E-1},
  { 5.0E+0, 1.768E-1},
  { 4.0E+0, 1.968E-1},
  { 3.0E+0, 2.235E-1},
  { 2.0E+0, 2.613E-1},
  { 1.5E+0, 2.871E-1},

  { 1.0E+0, 3.199E-1},
  { 8.0E-1, 3.354E-1},
  { 6.0E-1, 3.523E-1},
  { 5.0E-1, 3.609E-1},
  { 4.0E-1, 3.693E-1},
  { 3.0E-1, 3.766E-1},
  { 2.0E-1, 3.803E-1},
  { 1.5E-1, 3.788E-1},

  { 1.0E-1, 3.711E-1},
  { 8.0E-2, 3.644E-1},
  { 6.0E-2, 3.530E-1},
  { 5.0E-2, 3.444E-1},
  { 4.0E-2, 3.323E-1},
  { 3.0E-2, 3.144E-1},
  { 2.0E-2, 2.854E-1},
  { 1.5E-2, 2.629E-1},

  { 1.0E-2, 2.298E-1},
  { 8.0E-3, 2.115E-1},
  { 6.0E-3, 1.883E-1},
  { 5.0E-3, 1.741E-1},
  { 4.0E-3, 1.574E-1},
  { 3.0E-3, 1.372E-1},
  { 2.0E-3, 1.116E-1},
  { 1.5E-3, 9.559E-2},

  { 1.0E-3, 7.601E-2},
  { 8.0E-4, 6.668E-2},
  { 6.0E-4, 5.605E-2},
  { 5.0E-4, 5.008E-2},
  { 4.0E-4, 4.352E-2},
  { 3.0E-4, 3.617E-2},
  { 2.0E-4, 2.768E-2},
  { 1.5E-4, 2.279E-2},

  { 1.0E-4, 1.723E-2},
  { 8.0E-5, 1.473E-2},
  { 6.0E-5, 1.200E-2},
  { 5.0E-5, 1.052E-2},
  { 4.0E-5, 8.950E-3},
  { 3.0E-5, 7.246E-3},
  { 2.0E-5, 5.358E-3},
  { 1.5E-5, 4.313E-3},
  { 0.0, 3.166E-3}
  };

  for(G4int i=0; i<104; ++i) {
    ed[i] = nuca[i][0];
    ad[i] = nuca[i][1];
  }
}

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NuclearStoppingPower()

G4double G4ICRU49NuclearStoppingModel::NuclearStoppingPower ( G4double  kineticEnergy, G4double  Z1, G4double  Z2, G4double  A1, G4double  A2  )

private

Definition at line 139 of file G4ICRU49NuclearStoppingModel.cc.

{
  G4double energy = kineticEnergy/keV ;  // energy in keV
  G4double nloss = 0.0;
  G4double z12 = z1*z2;
  G4int iz1 = G4lrint(z1);
  G4int iz2 = G4lrint(z2);
  
  G4double rm;
  if(iz1 > 1) { rm = (mass1 + mass2)*(g4pow->Z23(iz1) + g4pow->Z23(iz2)); }
  else        { rm = (mass1 + mass2)*g4pow->Z13(iz2); }

  G4double er = 32.536 * mass2 * energy / ( z12 * rm ) ;  // reduced energy

  if (er >= ed[0]) { nloss = ad[0]; }
  else {
    // the table is inverse in energy
    for (G4int i=102; i>=0; --i)
    {
      if (er <= ed[i]) {
    nloss = (ad[i] - ad[i+1])*(er - ed[i+1])/(ed[i] - ed[i+1]) + ad[i+1];
    break;
      }
    }
  }

  // Stragling
  if(lossFlucFlag) {
    // G4double sig = 4.0 * mass1 * mass2 / ((mass1 + mass2)*(mass1 + mass2)*
    // (4.0 + 0.197*std::pow(er,-1.6991)+6.584*std::pow(er,-1.0494))) ;
    G4double sig = 4.0 * mass1 * mass2 / ((mass1 + mass2)*(mass1 + mass2)*
                    (4.0 + 0.197/(er*er) + 6.584/er));

    nloss *= G4RandGauss::shoot(1.0,sig);
    lossFlucFlag = false;
  }
   
  nloss *= 8.462 * z12 * mass1 / rm; // Return to [ev/(10^15 atoms/cm^2]

  if ( nloss < 0.0) { nloss = 0.0; }

  return nloss;
}

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operator=()

G4ICRU49NuclearStoppingModel& G4ICRU49NuclearStoppingModel::operator= ( const G4ICRU49NuclearStoppingModel &  right )

private

SampleSecondaries()

void G4ICRU49NuclearStoppingModel::SampleSecondaries ( std::vector< G4DynamicParticle *> *  , const G4MaterialCutsCouple *  , const G4DynamicParticle *  , G4double  , G4double    )

virtual

Implements G4VEmModel.

Definition at line 92 of file G4ICRU49NuclearStoppingModel.cc.

{}

SetFluctuationFlag()

void G4ICRU49NuclearStoppingModel::SetFluctuationFlag ( G4bool  val )

inline

Definition at line 110 of file G4ICRU49NuclearStoppingModel.hh.

{
  lossFlucFlag = val;
}

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Member Data Documentation

ad

G4double G4ICRU49NuclearStoppingModel::ad = {0.0}

staticprivate

Definition at line 102 of file G4ICRU49NuclearStoppingModel.hh.

ed

G4double G4ICRU49NuclearStoppingModel::ed = {0.0}

staticprivate

Definition at line 101 of file G4ICRU49NuclearStoppingModel.hh.

g4pow

G4Pow* G4ICRU49NuclearStoppingModel::g4pow

private

Definition at line 99 of file G4ICRU49NuclearStoppingModel.hh.

lossFlucFlag

G4bool G4ICRU49NuclearStoppingModel::lossFlucFlag

private

Definition at line 107 of file G4ICRU49NuclearStoppingModel.hh.

theZieglerFactor

G4double G4ICRU49NuclearStoppingModel::theZieglerFactor

private

Definition at line 104 of file G4ICRU49NuclearStoppingModel.hh.

---

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

• G4ICRU49NuclearStoppingModel.hh
• G4ICRU49NuclearStoppingModel.cc