G4AntiProtonField Class Reference

#include <G4AntiProtonField.hh>

Inheritance diagram for G4AntiProtonField:

G4VNuclearField

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 ()

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 49 of file G4AntiProtonField.cc.

00050   : G4VNuclearField(nucleus)
00051 {
00052   theCoeff = coeff;
00053 }

G4AntiProtonField::~G4AntiProtonField (  )  [virtual]

Definition at line 56 of file G4AntiProtonField.cc.

00057 { }


Member Function Documentation

G4double G4AntiProtonField::GetBarrier (  )  [virtual]

Implements G4VNuclearField.

Definition at line 82 of file G4AntiProtonField.cc.

References G4V3DNucleus::GetCharge(), G4V3DNucleus::GetMassNumber(), and G4VNuclearField::theNucleus.

Referenced by GetField().

00083 {
00084   G4int A = theNucleus->GetMassNumber();
00085   G4int Z = theNucleus->GetCharge();
00086   G4double coulombBarrier = (1.44/1.14) * MeV * Z / (1.0 + std::pow(A,1./3.));
00087   return -coulombBarrier;
00088 }

virtual G4double G4AntiProtonField::GetCoeff (  )  [inline, virtual]

Reimplemented from G4VNuclearField.

Definition at line 62 of file G4AntiProtonField.hh.

00062 { return theCoeff; }

G4double G4AntiProtonField::GetField ( const G4ThreeVector aPosition  )  [virtual]

Implements G4VNuclearField.

Definition at line 62 of file G4AntiProtonField.cc.

References G4AntiProton::AntiProtonDefinition(), G4InuclSpecialFunctions::bindingEnergy(), GetBarrier(), G4NucleiProperties::GetBindingEnergy(), G4V3DNucleus::GetCharge(), G4VNuclearDensity::GetDensity(), G4V3DNucleus::GetMassNumber(), G4V3DNucleus::GetNuclearDensity(), G4ParticleDefinition::GetPDGMass(), G4INCL::Math::pi, G4VNuclearField::radius, and G4VNuclearField::theNucleus.

00063 {
00064 // Field is 0 out of the nucleus!
00065   if(aPosition.mag() >= radius) return 0.0;
00066 
00067   G4ParticleDefinition *anAntiProton = G4AntiProton::AntiProtonDefinition();
00068   G4double antiProtonMass = anAntiProton->GetPDGMass();
00069 
00070   G4int A = theNucleus->GetMassNumber();
00071   G4int Z = theNucleus->GetCharge();
00072   G4double bindingEnergy = G4NucleiProperties::GetBindingEnergy(A, Z);
00073   G4double nucleusMass = Z*proton_mass_c2+(A-Z)*neutron_mass_c2+bindingEnergy;
00074   G4double reducedMass = antiProtonMass*nucleusMass/(antiProtonMass+nucleusMass);
00075 
00076   G4double density = theNucleus->GetNuclearDensity()->GetDensity(aPosition);
00077 
00078   return -2.*pi*hbarc*hbarc/reducedMass*(2.0)*theCoeff*density+GetBarrier();
00079 }


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