G4AntiProtonField Class Reference

#include <G4AntiProtonField.hh>

Inheritance diagram for G4AntiProtonField:

Collaboration diagram for G4AntiProtonField:

Public Member Functions
	G4AntiProtonField (G4V3DNucleus *nucleus, G4double coeff=1.53 *CLHEP::fermi)
virtual	~G4AntiProtonField ()
virtual G4double	GetField (const G4ThreeVector &aPosition)
virtual G4double	GetBarrier ()
virtual G4double	GetCoeff ()
Public Member Functions inherited from G4VNuclearField
	G4VNuclearField (G4V3DNucleus *aNucleus=0)
virtual	~G4VNuclearField ()
void	SetNucleus (G4V3DNucleus *aNucleus)

Additional Inherited Members
Protected Attributes inherited from G4VNuclearField
G4V3DNucleus *	theNucleus
const G4double	radius

Detailed Description

Definition at line 47 of file G4AntiProtonField.hh.

Constructor & Destructor Documentation

G4AntiProtonField::G4AntiProtonField	(	G4V3DNucleus *	nucleus,
		G4double	coeff = 1.53*CLHEP::fermi
	)

Definition at line 50 of file G4AntiProtonField.cc.

  : G4VNuclearField(nucleus)
{
  theCoeff = coeff;
}

G4AntiProtonField::~G4AntiProtonField ( )

virtual

Definition at line 57 of file G4AntiProtonField.cc.

{ }

Member Function Documentation

G4double G4AntiProtonField::GetBarrier ( )

virtual

Implements G4VNuclearField.

Definition at line 83 of file G4AntiProtonField.cc.

{
  G4int A = theNucleus->GetMassNumber();
  G4int Z = theNucleus->GetCharge();
  G4double coulombBarrier = (1.44/1.14) * MeV * Z / (1.0 + G4Pow::GetInstance()->Z13(A));
  return -coulombBarrier;
}

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virtual G4double G4AntiProtonField::GetCoeff ( )

inlinevirtual

Reimplemented from G4VNuclearField.

Definition at line 62 of file G4AntiProtonField.hh.

{ return theCoeff; }

G4double G4AntiProtonField::GetField ( const G4ThreeVector &  aPosition )

virtual

Implements G4VNuclearField.

Definition at line 63 of file G4AntiProtonField.cc.

{
// Field is 0 out of the nucleus!
  if(aPosition.mag() >= radius) return 0.0;

  const G4ParticleDefinition *anAntiProton = G4AntiProton::AntiProtonDefinition();
  G4double antiProtonMass = anAntiProton->GetPDGMass();

  G4int A = theNucleus->GetMassNumber();
  G4int Z = theNucleus->GetCharge();
  G4double bindingEnergy = G4NucleiProperties::GetBindingEnergy(A, Z);
  G4double nucleusMass = Z*proton_mass_c2+(A-Z)*neutron_mass_c2+bindingEnergy;
  G4double reducedMass = antiProtonMass*nucleusMass/(antiProtonMass+nucleusMass);

  G4double density = theNucleus->GetNuclearDensity()->GetDensity(aPosition);

  return -2.*pi*hbarc*hbarc/reducedMass*(2.0)*theCoeff*density+GetBarrier();
}

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

• source/geant4.10.03.p03/source/processes/hadronic/models/binary_cascade/include/G4AntiProtonField.hh
• source/geant4.10.03.p03/source/processes/hadronic/models/binary_cascade/src/G4AntiProtonField.cc