#include <G4MuonMinusBoundDecay.hh>

Inheritance diagram for G4MuonMinusBoundDecay:

Public Member Functions
	G4MuonMinusBoundDecay ()

	~G4MuonMinusBoundDecay ()

G4HadFinalState *	ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)

void	ModelDescription (std::ostream &outFile) const

Public Member Functions inherited from G4HadronicInteraction
	G4HadronicInteraction (const G4String &modelName="HadronicModel")

virtual	~G4HadronicInteraction ()

virtual G4HadFinalState *	ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)=0

virtual G4double	SampleInvariantT (const G4ParticleDefinition *p, G4double plab, G4int Z, G4int A)

virtual G4bool	IsApplicable (const G4HadProjectile &, G4Nucleus &)

G4double	GetMinEnergy () const

G4double	GetMinEnergy (const G4Material aMaterial, const G4Element anElement) const

void	SetMinEnergy (G4double anEnergy)

void	SetMinEnergy (G4double anEnergy, const G4Element *anElement)

void	SetMinEnergy (G4double anEnergy, const G4Material *aMaterial)

G4double	GetMaxEnergy () const

G4double	GetMaxEnergy (const G4Material aMaterial, const G4Element anElement) const

void	SetMaxEnergy (const G4double anEnergy)

void	SetMaxEnergy (G4double anEnergy, const G4Element *anElement)

void	SetMaxEnergy (G4double anEnergy, const G4Material *aMaterial)

const G4HadronicInteraction *	GetMyPointer () const

G4int	GetVerboseLevel () const

void	SetVerboseLevel (G4int value)

const G4String &	GetModelName () const

void	DeActivateFor (const G4Material *aMaterial)

void	ActivateFor (const G4Material *aMaterial)

void	DeActivateFor (const G4Element *anElement)

void	ActivateFor (const G4Element *anElement)

G4bool	IsBlocked (const G4Material *aMaterial) const

G4bool	IsBlocked (const G4Element *anElement) const

void	SetRecoilEnergyThreshold (G4double val)

G4double	GetRecoilEnergyThreshold () const

G4bool	operator== (const G4HadronicInteraction &right) const

G4bool	operator!= (const G4HadronicInteraction &right) const

virtual const std::pair< G4double, G4double >	GetFatalEnergyCheckLevels () const

virtual std::pair< G4double, G4double >	GetEnergyMomentumCheckLevels () const

void	SetEnergyMomentumCheckLevels (G4double relativeLevel, G4double absoluteLevel)

virtual void	ModelDescription (std::ostream &outFile) const

Additional Inherited Members
Protected Member Functions inherited from G4HadronicInteraction
void	SetModelName (const G4String &nam)

G4bool	IsBlocked () const

void	Block ()

Protected Attributes inherited from G4HadronicInteraction
G4HadFinalState	theParticleChange

G4int	verboseLevel

G4double	theMinEnergy

G4double	theMaxEnergy

G4bool	isBlocked

Detailed Description

Definition at line 67 of file G4MuonMinusBoundDecay.hh.

Constructor & Destructor Documentation

◆ G4MuonMinusBoundDecay()

G4MuonMinusBoundDecay::G4MuonMinusBoundDecay ( )

Definition at line 55 of file G4MuonMinusBoundDecay.cc.

  : G4HadronicInteraction("muMinusBoundDeacy")
{
  fMuMass = G4MuonMinus::MuonMinus()->GetPDGMass(); 
}

◆ ~G4MuonMinusBoundDecay()

G4MuonMinusBoundDecay::~G4MuonMinusBoundDecay ( )

Definition at line 63 of file G4MuonMinusBoundDecay.cc.

64{}

Member Function Documentation

◆ ApplyYourself()

G4HadFinalState * G4MuonMinusBoundDecay::ApplyYourself	(	const G4HadProjectile &	aTrack,
		G4Nucleus &	targetNucleus
	)

virtual

Implements G4HadronicInteraction.

Definition at line 69 of file G4MuonMinusBoundDecay.cc.

{
  result.Clear();
  G4int Z = targetNucleus.GetZ_asInt(); 
  G4int A = targetNucleus.GetA_asInt(); 
 
  // Decide on Decay or Capture, and doit.
  G4double lambdac  = GetMuonCaptureRate(Z, A);
  G4double lambdad  = GetMuonDecayRate(Z);
  G4double lambda   = lambdac + lambdad;
 
  // ===  sample capture  time and change time of projectile
 
  G4double time = -std::log(G4UniformRand()) / lambda;
  G4HadProjectile* p = const_cast<G4HadProjectile*>(&projectile);
  p->SetGlobalTime(time);
    
  //G4cout << "lambda= " << lambda << " lambdac= " << lambdac 
  //<< " t= " << time << G4endl;
 
  // cascade
  if( G4UniformRand()*lambda < lambdac) {
    result.SetStatusChange(isAlive);
 
  } else {
 
    // Simulation on Decay of mu- on a K-shell of the muonic atom
    result.SetStatusChange(stopAndKill);
    G4double xmax = 1 + electron_mass_c2*electron_mass_c2/(fMuMass*fMuMass);
    G4double xmin = 2.0*electron_mass_c2/fMuMass;
    G4double KEnergy = projectile.GetBoundEnergy();
 
    /*
      G4cout << "G4MuonMinusBoundDecay::ApplyYourself" 
      << " XMAX= " << xmax << " Ebound= " << KEnergy<< G4endl;
    */
    G4double pmu = std::sqrt(KEnergy*(KEnergy + 2.0*fMuMass));
    G4double emu = KEnergy + fMuMass;
    G4ThreeVector dir = G4RandomDirection();
    G4LorentzVector MU(pmu*dir, emu);
    G4ThreeVector bst = MU.boostVector();
 
    G4double Eelect, Pelect, x, ecm;
    G4LorentzVector EL, NN;
    // Calculate electron energy
    do {
      do {
    x = xmin + (xmax-xmin)*G4UniformRand();
      } while (G4UniformRand() > (3.0 - 2.0*x)*x*x );
      Eelect = x*fMuMass*0.5;
      Pelect = 0.0;
      if(Eelect > electron_mass_c2) { 
    Pelect = std::sqrt(Eelect*Eelect - electron_mass_c2*electron_mass_c2);
      } else {
    Pelect = 0.0;
    Eelect = electron_mass_c2;
      }
      dir = G4RandomDirection();
      EL = G4LorentzVector(Pelect*dir,Eelect);
      EL.boost(bst);
      Eelect = EL.e() - electron_mass_c2 - 2.0*KEnergy;
      //
      // Calculate rest frame parameters of 2 neutrinos
      //
      NN = MU - EL;
      ecm = NN.mag2();
    } while (Eelect < 0.0 || ecm < 0.0);
 
    //
    // Create electron
    //
    G4DynamicParticle* dp = new G4DynamicParticle(G4Electron::Electron(),
                          EL.vect().unit(),
                          Eelect);
 
    AddNewParticle(dp, time);
    //
    // Create Neutrinos
    //
    ecm = 0.5*std::sqrt(ecm);
    bst = NN.boostVector();
    G4ThreeVector p1 = ecm * G4RandomDirection();
    G4LorentzVector N1 = G4LorentzVector(p1,ecm);
    N1.boost(bst);
    dp = new G4DynamicParticle(G4AntiNeutrinoE::AntiNeutrinoE(), N1);
    AddNewParticle(dp, time);
    NN -= N1;
    dp = new G4DynamicParticle(G4NeutrinoMu::NeutrinoMu(), NN);
    AddNewParticle(dp, time);
  }
  return &result;
}

◆ ModelDescription()

void G4MuonMinusBoundDecay::ModelDescription ( std::ostream & outFile ) const

virtual

Reimplemented from G4HadronicInteraction.

Definition at line 270 of file G4MuonMinusBoundDecay.cc.

{
  outFile << "Sample probabilities of mu- nuclear capture of decay"
      << " from K-shell orbit.\n"
      << "  Time of projectile is changed taking into account life time"
      << " of muonic atom.\n"
      << "  If decay is sampled primary state become stopAndKill,"
      << " else - isAlive.\n"
          << "Based of reviews:\n"
          << "  N.C.Mukhopadhyay Phy. Rep. 30 (1977) 1.\n"
          << "  B.B.Balashov, G.Ya.Korenman, P.A.Eramgan, Atomizdat, 1978.\n"; 
 
}

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

Public Member Functions