G4DecayProducts Class Reference

#include <G4DecayProducts.hh>

Public Types
using	G4DecayProductVector = std::vector<G4DynamicParticle*>

Public Member Functions
	G4DecayProducts ()
	G4DecayProducts (const G4DynamicParticle &aParticle)
	G4DecayProducts (const G4DecayProducts &right)
G4DecayProducts &	operator= (const G4DecayProducts &right)
	~G4DecayProducts ()
G4bool	operator== (const G4DecayProducts &right) const
G4bool	operator!= (const G4DecayProducts &right) const
const G4DynamicParticle *	GetParentParticle () const
void	SetParentParticle (const G4DynamicParticle &aParticle)
void	Boost (G4double totalEnergy, const G4ThreeVector &momentumDirection)
void	Boost (G4double betax, G4double betay, G4double betaz)
G4DynamicParticle *	PopProducts ()
G4int	PushProducts (G4DynamicParticle *aParticle)
G4DynamicParticle *	operator[] (G4int anIndex) const
G4int	entries () const
G4bool	IsChecked () const
void	DumpInfo () const

Detailed Description

Definition at line 43 of file G4DecayProducts.hh.

Member Typedef Documentation

G4DecayProductVector

using G4DecayProducts::G4DecayProductVector = std::vector<G4DynamicParticle*>

Definition at line 85 of file G4DecayProducts.hh.

Constructor & Destructor Documentation

G4DecayProducts() [1/3]

G4DecayProducts::G4DecayProducts

(

)

Definition at line 40 of file G4DecayProducts.cc.

{
  theProductVector = new G4DecayProductVector();
}

Referenced by G4DecayProducts(), operator!=(), operator=(), and operator==().

G4DecayProducts() [2/3]

G4DecayProducts::G4DecayProducts

(

const G4DynamicParticle &

aParticle

)

Definition at line 45 of file G4DecayProducts.cc.

{
  theParentParticle = new G4DynamicParticle(aParticle);
  theProductVector = new G4DecayProductVector();
}

G4DecayProducts() [3/3]

G4DecayProducts::G4DecayProducts

(

const G4DecayProducts &

right

)

Definition at line 51 of file G4DecayProducts.cc.

{
  theProductVector = new G4DecayProductVector();
 
  // copy parent (Deep Copy)
  theParentParticle = new G4DynamicParticle(*right.theParentParticle);
 
  // copy daughters (Deep Copy)
  for (G4int index = 0; index < right.numberOfProducts; ++index) {
    G4DynamicParticle* daughter = right.theProductVector->at(index);
    auto pDaughter = new G4DynamicParticle(*daughter);
 
    G4double properTime = daughter->GetPreAssignedDecayProperTime();
    if (properTime > 0.0) pDaughter->SetPreAssignedDecayProperTime(properTime);
 
    const G4DecayProducts* pPreAssigned = daughter->GetPreAssignedDecayProducts();
    if (pPreAssigned != nullptr) {
      auto pPA = new G4DecayProducts(*pPreAssigned);
      pDaughter->SetPreAssignedDecayProducts(pPA);
    }
    theProductVector->push_back(pDaughter);
  }
  numberOfProducts = right.numberOfProducts;
}

~G4DecayProducts()

G4DecayProducts::~G4DecayProducts

(

)

Definition at line 111 of file G4DecayProducts.cc.

{
  // delete parent
  delete theParentParticle;
  theParentParticle = nullptr;
 
  // delete G4DynamicParticle object
  for (G4int index = 0; index < numberOfProducts; ++index) {
    delete theProductVector->at(index);
  }
  theProductVector->clear();
  numberOfProducts = 0;
  delete theProductVector;
  theProductVector = nullptr;
}

Member Function Documentation

Boost() [1/2]

void G4DecayProducts::Boost	(	G4double	betax,
		G4double	betay,
		G4double	betaz )

Definition at line 175 of file G4DecayProducts.cc.

{
  G4double mass = theParentParticle->GetMass();
  G4double energy = theParentParticle->GetTotalEnergy();
  G4double momentum = 0.0;
 
  G4ThreeVector direction(0.0, 0.0, 1.0);
  G4LorentzVector p4;
 
  if (energy - mass > DBL_MIN) {
    // calcurate  beta of initial state
    momentum = theParentParticle->GetTotalMomentum();
    direction = theParentParticle->GetMomentumDirection();
    G4double betax = -1.0 * direction.x() * momentum / energy;
    G4double betay = -1.0 * direction.y() * momentum / energy;
    G4double betaz = -1.0 * direction.z() * momentum / energy;
 
    for (G4int index = 0; index < numberOfProducts; ++index) {
      // make G4LorentzVector for secondaries
      p4 = (theProductVector->at(index))->Get4Momentum();
 
      // boost secondaries to theParentParticle's rest frame
      p4.boost(betax, betay, betaz);
 
      // boost secondaries to  new frame
      p4.boost(newbetax, newbetay, newbetaz);
 
      // change energy/momentum
      (theProductVector->at(index))->Set4Momentum(p4);
    }
  }
  else {
    for (G4int index = 0; index < numberOfProducts; ++index) {
      // make G4LorentzVector for secondaries
      p4 = (theProductVector->at(index))->Get4Momentum();
 
      // boost secondaries to  new frame
      p4.boost(newbetax, newbetay, newbetaz);
 
      // change energy/momentum
      (theProductVector->at(index))->Set4Momentum(p4);
    }
  }
 
  // make G4LorentzVector for parent in its rest frame
  mass = theParentParticle->GetMass();
  G4LorentzVector parent4(0.0, 0.0, 0.0, mass);
 
  // boost parent to new frame
  parent4.boost(newbetax, newbetay, newbetaz);
 
  // change energy/momentum
  theParentParticle->Set4Momentum(parent4);
}

Boost() [2/2]

void G4DecayProducts::Boost	(	G4double	totalEnergy,
		const G4ThreeVector &	momentumDirection )

Definition at line 161 of file G4DecayProducts.cc.

{
  // calculate new beta
  G4double mass = theParentParticle->GetMass();
  G4double totalMomentum(0);
  if (totalEnergy > mass) {
    totalMomentum = std::sqrt((totalEnergy - mass) * (totalEnergy + mass));
  }
  G4double betax = momentumDirection.x() * totalMomentum / totalEnergy;
  G4double betay = momentumDirection.y() * totalMomentum / totalEnergy;
  G4double betaz = momentumDirection.z() * totalMomentum / totalEnergy;
  Boost(betax, betay, betaz);
}

Referenced by Boost(), G4VRadioactiveDecay::DecayAnalog(), G4Decay::DecayIt(), G4UnknownDecay::DecayIt(), and G4IntraNucleiCascader::decayTrappedParticle().

DumpInfo()

void G4DecayProducts::DumpInfo

(

)

const

Definition at line 301 of file G4DecayProducts.cc.

{
  G4cout << " ----- List of DecayProducts  -----" << G4endl;
  G4cout << " ------ Parent Particle ----------" << G4endl;
  if (theParentParticle != nullptr) theParentParticle->DumpInfo();
  G4cout << " ------ Daughter Particles  ------" << G4endl;
  for (G4int index = 0; index < numberOfProducts; ++index) {
    G4cout << " ----------" << index + 1 << " -------------" << G4endl;
    (theProductVector->at(index))->DumpInfo();
  }
  G4cout << " ----- End List of DecayProducts  -----" << G4endl;
  G4cout << G4endl;
}

Referenced by G4VRadioactiveDecay::DecayAnalog(), G4Decay::DecayIt(), G4UnknownDecay::DecayIt(), G4GeneralPhaseSpaceDecay::ManyBodyDecayIt(), G4GeneralPhaseSpaceDecay::OneBodyDecayIt(), G4GeneralPhaseSpaceDecay::ThreeBodyDecayIt(), and G4GeneralPhaseSpaceDecay::TwoBodyDecayIt().

entries()

G4int G4DecayProducts::entries ( ) const

inline

Definition at line 78 of file G4DecayProducts.hh.

{ return numberOfProducts; }

Referenced by G4RadioactiveDecay::AddDeexcitationSpectrumForBiasMode(), G4VRadioactiveDecay::CollimateDecay(), G4PionDecayMakeSpin::DaughterPolarization(), G4KineticTrack::Decay(), G4VRadioactiveDecay::DecayAnalog(), G4Decay::DecayIt(), G4RadioactiveDecay::DecayIt(), G4UnknownDecay::DecayIt(), and G4IntraNucleiCascader::decayTrappedParticle().

GetParentParticle()

const G4DynamicParticle * G4DecayProducts::GetParentParticle ( ) const

inline

Definition at line 107 of file G4DecayProducts.hh.

{
  return theParentParticle;
}

Referenced by G4PionDecayMakeSpin::DaughterPolarization().

IsChecked()

G4bool G4DecayProducts::IsChecked

(

)

const

Definition at line 230 of file G4DecayProducts.cc.

{
  G4bool returnValue = true;
 
  // check parent
  // energy/momentum
  G4double parent_energy = theParentParticle->GetTotalEnergy();
  G4ThreeVector direction = theParentParticle->GetMomentumDirection();
  G4ThreeVector parent_momentum = direction * (theParentParticle->GetTotalMomentum());
 
  // check momentum direction is a unit vector
  if ((parent_momentum.mag() > 0.0) && (std::fabs(direction.mag() - 1.0) > 1.0e-6)) {
#ifdef G4VERBOSE
    G4cout << "G4DecayProducts::IsChecked()::  "
           << " Momentum Direction Vector of Parent is not normalized "
           << "  (=" << direction.mag() << ")" << G4endl;
#endif
    returnValue = false;
    parent_momentum = parent_momentum * (1. / direction.mag());
  }
 
  // daughters
  G4double mass, energy;
  G4ThreeVector momentum;
  G4double total_energy = parent_energy;
  G4ThreeVector total_momentum = parent_momentum;
 
  for (G4int index = 0; index < numberOfProducts; ++index) {
    G4DynamicParticle* part = theProductVector->at(index);
    mass = part->GetMass();
    energy = part->GetTotalEnergy();
    direction = part->GetMomentumDirection();
    momentum = direction * (part->GetTotalMomentum());
 
    // check momentum direction is a unit vector
    if ((momentum.mag() > 0.0) && (std::fabs(direction.mag() - 1.0) > 1.0e-6)) {
#ifdef G4VERBOSE
      G4cout << "G4DecayProducts::IsChecked()::  "
             << " Momentum Direction Vector of Daughter [" << index
             << "]  is not normalized (=" << direction.mag() << ")" << G4endl;
#endif
      returnValue = false;
      momentum = momentum * (1. / direction.mag());
    }
    // whether daughter stops or not
    if (energy - mass < DBL_MIN) {
#ifdef G4VERBOSE
      G4cout << "G4DecayProducts::IsChecked()::  "
             << "  Daughter [" << index << "] has no kinetic energy " << G4endl;
#endif
      returnValue = false;
    }
    total_energy -= energy;
    total_momentum -= momentum;
  }
  // check energy/momentum conservation
  if ((std::fabs(total_energy) > 1.0e-9 * MeV) || (total_momentum.mag() > 1.0e-9 * MeV)) {
#ifdef G4VERBOSE
    G4cout << "G4DecayProducts::IsChecked()::  "
           << " Energy/Momentum is not conserved   " << G4endl;
    G4cout << " difference between parent energy & sum of daughters energy: " << total_energy / MeV
           << "[MeV]  " << G4endl;
    G4cout << " difference between parent momentum & sum of daughters momentum: "
           << " x:" << total_momentum.getX() / MeV << " y:" << total_momentum.getY() / MeV
           << " z:" << total_momentum.getZ() / MeV << G4endl;
#endif
    returnValue = false;
  }
  return returnValue;
}

Referenced by G4VRadioactiveDecay::DecayAnalog(), and G4Decay::DecayIt().

operator!=()

G4bool G4DecayProducts::operator!= ( const G4DecayProducts & right ) const

inline

Definition at line 102 of file G4DecayProducts.hh.

{
  return (this != (G4DecayProducts*)&right);
}

operator=()

G4DecayProducts & G4DecayProducts::operator=

(

const G4DecayProducts &

right

)

Definition at line 76 of file G4DecayProducts.cc.

{
  G4int index;
 
  if (this != &right) {
    // recreate parent
    delete theParentParticle;
    theParentParticle = new G4DynamicParticle(*right.theParentParticle);
 
    // delete G4DynamicParticle objects
    for (index = 0; index < numberOfProducts; ++index) {
      delete theProductVector->at(index);
    }
    theProductVector->clear();
 
    // copy daughters (Deep Copy)
    for (index = 0; index < right.numberOfProducts; ++index) {
      G4DynamicParticle* daughter = right.theProductVector->at(index);
      auto pDaughter = new G4DynamicParticle(*daughter);
 
      G4double properTime = daughter->GetPreAssignedDecayProperTime();
      if (properTime > 0.0) pDaughter->SetPreAssignedDecayProperTime(properTime);
 
      const G4DecayProducts* pPreAssigned = daughter->GetPreAssignedDecayProducts();
      if (pPreAssigned != nullptr) {
        auto pPA = new G4DecayProducts(*pPreAssigned);
        pDaughter->SetPreAssignedDecayProducts(pPA);
      }
      theProductVector->push_back(pDaughter);
    }
    numberOfProducts = right.numberOfProducts;
  }
  return *this;
}

operator==()

G4bool G4DecayProducts::operator== ( const G4DecayProducts & right ) const

inline

Definition at line 97 of file G4DecayProducts.hh.

{
  return (this == (G4DecayProducts*)&right);
}

operator[]()

G4DynamicParticle * G4DecayProducts::operator[]

(

G4int

anIndex

)

const

Definition at line 146 of file G4DecayProducts.cc.

{
  if ((numberOfProducts > anIndex) && (anIndex >= 0)) {
    return theProductVector->at(anIndex);
  }
 
  return nullptr;
}

PopProducts()

G4DynamicParticle * G4DecayProducts::PopProducts

(

)

Definition at line 127 of file G4DecayProducts.cc.

{
  if (numberOfProducts > 0) {
    numberOfProducts -= 1;
    G4DynamicParticle* part = theProductVector->back();
    theProductVector->pop_back();
    return part;
  }
 
  return nullptr;
}

Referenced by G4RadioactiveDecay::AddDeexcitationSpectrumForBiasMode(), G4KineticTrack::Decay(), G4VRadioactiveDecay::DecayAnalog(), G4Decay::DecayIt(), G4RadioactiveDecay::DecayIt(), and G4UnknownDecay::DecayIt().

PushProducts()

G4int G4DecayProducts::PushProducts

(

G4DynamicParticle *

aParticle

)

Definition at line 139 of file G4DecayProducts.cc.

{
  theProductVector->push_back(aParticle);
  numberOfProducts += 1;
  return numberOfProducts;
}

Referenced by G4AlphaDecay::DecayIt(), G4BetaMinusDecay::DecayIt(), G4BetaPlusDecay::DecayIt(), G4ECDecay::DecayIt(), G4ITDecay::DecayIt(), G4NeutronDecay::DecayIt(), G4ProtonDecay::DecayIt(), G4SFDecay::DecayIt(), G4TritonDecay::DecayIt(), G4GeneralPhaseSpaceDecay::ManyBodyDecayIt(), G4GeneralPhaseSpaceDecay::OneBodyDecayIt(), G4GeneralPhaseSpaceDecay::ThreeBodyDecayIt(), and G4GeneralPhaseSpaceDecay::TwoBodyDecayIt().

SetParentParticle()

void G4DecayProducts::SetParentParticle

(

const G4DynamicParticle &

aParticle

)

Definition at line 155 of file G4DecayProducts.cc.

{
  delete theParentParticle;
  theParentParticle = new G4DynamicParticle(aParticle);
}

---

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

• G4DecayProducts.hh
• G4DecayProducts.cc