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00031 #include <iostream>
00032
00033 #include "G4LEAlphaInelastic.hh"
00034 #include "G4SystemOfUnits.hh"
00035 #include "Randomize.hh"
00036 #include "G4Electron.hh"
00037
00038 G4LEAlphaInelastic::G4LEAlphaInelastic(const G4String& name)
00039 : G4InelasticInteraction(name)
00040 {
00041 SetMinEnergy(0.0*GeV);
00042 SetMaxEnergy(10.*TeV);
00043 G4cout << "WARNING: model G4LEAlphaInelastic is being deprecated and will\n"
00044 << "disappear in Geant4 version 10.0" << G4endl;
00045 }
00046
00047
00048 void G4LEAlphaInelastic::ModelDescription(std::ostream& outFile) const
00049 {
00050 outFile << "G4LEAlphaInelastic is one of the Low Energy Parameterized\n"
00051 << "(LEP) models used to implement inelastic alpha scattering\n"
00052 << "from nuclei. It is a re-engineered version of the GHEISHA\n"
00053 << "code of H. Fesefeldt. It divides the initial collision\n"
00054 << "products into backward- and forward-going clusters which are\n"
00055 << "then decayed into final state hadrons. The model does not\n"
00056 << "conserve energy on an event-by-event basis. It may be\n"
00057 << "applied to alphas with initial energies between 0 and 10\n"
00058 << "TeV.\n";
00059 }
00060
00061
00062 G4HadFinalState*
00063 G4LEAlphaInelastic::ApplyYourself(const G4HadProjectile& aTrack,
00064 G4Nucleus& targetNucleus)
00065 {
00066 theParticleChange.Clear();
00067 const G4HadProjectile* originalIncident = &aTrack;
00068
00069 G4double A = targetNucleus.GetA_asInt();
00070 G4double Z = targetNucleus.GetZ_asInt();
00071
00072 G4double kineticEnergy = aTrack.Get4Momentum().e()-aTrack.GetDefinition()->GetPDGMass();
00073 if (verboseLevel > 1) {
00074 const G4Material *targetMaterial = aTrack.GetMaterial();
00075 G4cout << "G4LEAlphaInelastic::ApplyYourself called" << G4endl;
00076 G4cout << "kinetc energy = " <<kineticEnergy/MeV << "MeV, ";
00077 G4cout << "target material = " << targetMaterial->GetName() << G4endl;
00078 }
00079
00080
00081 if (kineticEnergy/MeV > 100. || kineticEnergy <= 0.1*MeV) {
00082 theParticleChange.SetStatusChange(isAlive);
00083 theParticleChange.SetEnergyChange(aTrack.GetKineticEnergy());
00084 theParticleChange.SetMomentumChange(aTrack.Get4Momentum().vect().unit());
00085 return &theParticleChange;
00086 }
00087 G4double theAtomicMass = targetNucleus.AtomicMass( A, Z );
00088 G4double massVec[9];
00089 massVec[0] = targetNucleus.AtomicMass( A+4.0, Z+2.0 );
00090 massVec[1] = targetNucleus.AtomicMass( A+3.0, Z+2.0 );
00091 massVec[2] = targetNucleus.AtomicMass( A+3.0, Z+1.0 );
00092 massVec[3] = targetNucleus.AtomicMass( A+2.0, Z+1.0 );
00093 massVec[4] = targetNucleus.AtomicMass( A+1.0, Z+1.0 );
00094 massVec[5] = theAtomicMass;
00095 massVec[6] = targetNucleus.AtomicMass( A+2.0, Z+2.0 );
00096 massVec[7] = massVec[3];
00097 massVec[8] = targetNucleus.AtomicMass( A+2.0, Z );
00098
00099 G4FastVector<G4ReactionProduct,4> vec;
00100 G4int vecLen = 0;
00101 vec.Initialize( 0 );
00102
00103 theReactionDynamics.NuclearReaction(vec, vecLen, &aTrack,
00104 targetNucleus, theAtomicMass, massVec);
00105
00106 G4double p = vec[0]->GetMomentum().mag();
00107 theParticleChange.SetMomentumChange( vec[0]->GetMomentum() *(1./p));
00108 theParticleChange.SetEnergyChange( vec[0]->GetKineticEnergy() );
00109 delete vec[0];
00110
00111 if (vecLen <= 1)
00112 {
00113 theParticleChange.SetStatusChange(isAlive);
00114 theParticleChange.SetEnergyChange(aTrack.GetKineticEnergy());
00115 theParticleChange.SetMomentumChange(aTrack.Get4Momentum().vect().unit());
00116 return &theParticleChange;
00117 }
00118
00119 G4DynamicParticle *pd;
00120 for (G4int i = 1; i < vecLen; ++i) {
00121 pd = new G4DynamicParticle();
00122 pd->SetDefinition( vec[i]->GetDefinition() );
00123 pd->SetMomentum( vec[i]->GetMomentum() );
00124 theParticleChange.AddSecondary( pd );
00125 delete vec[i];
00126 }
00127
00128 if (isotopeProduction) DoIsotopeCounting(originalIncident, targetNucleus);
00129 return &theParticleChange;
00130 }