G4INCLNuclearDensity.cc

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//
// INCL++ intra-nuclear cascade model
// Pekka Kaitaniemi, CEA and Helsinki Institute of Physics
// Davide Mancusi, CEA
// Alain Boudard, CEA
// Sylvie Leray, CEA
// Joseph Cugnon, University of Liege
//
#define INCLXX_IN_GEANT4_MODE 1

#include "globals.hh"

#include "G4INCLNuclearDensity.hh"
#include "G4INCLParticleTable.hh"
#include "G4INCLGlobals.hh"
#include <algorithm>

namespace G4INCL {

  NuclearDensity::NuclearDensity(G4int A, G4int Z, InverseInterpolationTable *rpCorrelationTable) :
    theA(A),
    theZ(Z),
    theMaximumRadius((*rpCorrelationTable)(1.)),
    theNuclearRadius(ParticleTable::getNuclearRadius(theA,theZ)),
    rFromP(rpCorrelationTable),
    // The interpolation table for local-energy look-ups is simply obtained by
    // inverting the r-p correlation table.
    tFromR(new InverseInterpolationTable(rFromP->getNodeValues(), rFromP->getNodeAbscissae()))
  {
    DEBUG("Interpolation table for local energy (A=" << theA << ", Z=" << theZ << ") initialised:"
        << std::endl
        << tFromR->print()
        << std::endl);
    initializeTransmissionRadii();
  }

  NuclearDensity::~NuclearDensity() {
    // We don't delete the rFromP table, which is cached in the
    // NuclearDensityFactory
    delete tFromR;
  }

  NuclearDensity::NuclearDensity(const NuclearDensity &rhs) :
    theA(rhs.theA),
    theZ(rhs.theZ),
    theMaximumRadius(rhs.theMaximumRadius),
    theNuclearRadius(rhs.theNuclearRadius),
    // rFromP is owned by NuclearDensityFactory, so shallow copy is sufficient
    rFromP(rhs.rFromP),
    // deep copy for tFromR
    tFromR(new InverseInterpolationTable(*(rhs.tFromR)))
  {
    std::copy(rhs.transmissionRadius, rhs.transmissionRadius+UnknownParticle, transmissionRadius);
  }

  NuclearDensity &NuclearDensity::operator=(const NuclearDensity &rhs) {
    NuclearDensity temporaryDensity(rhs);
    swap(temporaryDensity);
    return *this;
  }

  void NuclearDensity::swap(NuclearDensity &rhs) {
    std::swap(theA, rhs.theA);
    std::swap(theZ, rhs.theZ);
    std::swap(theMaximumRadius, rhs.theMaximumRadius);
    std::swap(theNuclearRadius, rhs.theNuclearRadius);
    std::swap_ranges(transmissionRadius, transmissionRadius+UnknownParticle, rhs.transmissionRadius);
    std::swap(rFromP, rhs.rFromP);
    std::swap(tFromR, rhs.tFromR);
 }

  void NuclearDensity::initializeTransmissionRadii() {
    const G4double theProtonRadius = 0.88; // fm
    const G4double theProtonTransmissionRadius = theNuclearRadius + theProtonRadius;

    transmissionRadius[Proton] = theProtonTransmissionRadius;
    transmissionRadius[PiPlus] = theNuclearRadius;
    transmissionRadius[PiMinus] = theNuclearRadius;
    transmissionRadius[DeltaPlusPlus] = theProtonTransmissionRadius;
    transmissionRadius[DeltaPlus] = theProtonTransmissionRadius;
    transmissionRadius[DeltaMinus] = theProtonTransmissionRadius;
    transmissionRadius[Composite] = theNuclearRadius;
    // transmission radii for neutral particles intentionally left uninitialised
  }

  G4double NuclearDensity::getMaxRFromP(G4double p) const {
    return (*rFromP)(p);
  }

  G4double NuclearDensity::getMaxTFromR(G4double r) const {
    return (*tFromR)(r);
  }

}

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