Gabriele Cosmo
78 lines
3.3 KiB
C++
78 lines
3.3 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// 081024 G4NucleiPropertiesTable:: to G4NucleiProperties::
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//
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// P. Arce, June-2014 Conversion neutron_hp to particle_hp
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//
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#ifndef G4ParticleHPThermalBoost_h
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#define G4ParticleHPThermalBoost_h
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#include "G4Electron.hh"
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#include "G4Element.hh"
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#include "G4HadProjectile.hh"
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#include "G4Neutron.hh"
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#include "G4NucleiProperties.hh"
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#include "G4Nucleus.hh"
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#include "G4ReactionProduct.hh"
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class G4ParticleHPThermalBoost
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{
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public:
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G4double GetThermalEnergy(const G4HadProjectile& aP, const G4Element* anE, G4double aT)
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{
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G4double theA = anE->GetN();
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G4double theZ = anE->GetZ();
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return GetThermalEnergy(aP, theA, theZ, aT);
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}
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G4double GetThermalEnergy(const G4HadProjectile& aP, G4double theA, G4double theZ, G4double aT)
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{
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// prepare neutron
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G4double eKinetic = aP.GetKineticEnergy();
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G4ReactionProduct theNeutronRP(const_cast<G4ParticleDefinition*>(aP.GetDefinition()));
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theNeutronRP.SetMomentum(aP.Get4Momentum().vect());
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theNeutronRP.SetKineticEnergy(eKinetic);
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G4ThreeVector neuVelo = (1. / aP.GetDefinition()->GetPDGMass()) * theNeutronRP.GetMomentum();
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// prepare properly biased thermal nucleus
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G4Nucleus aNuc;
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G4double eps = 0.0001;
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G4double eleMass;
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eleMass = (G4NucleiProperties::GetNuclearMass(static_cast<G4int>(theA + eps),
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static_cast<G4int>(theZ + eps)))
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/ G4Neutron::Neutron()->GetPDGMass();
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G4ReactionProduct aThermalNuc = aNuc.GetBiasedThermalNucleus(eleMass, neuVelo, aT);
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// boost to rest system and return
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G4ReactionProduct boosted;
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boosted.Lorentz(theNeutronRP, aThermalNuc);
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return boosted.GetKineticEnergy();
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}
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};
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#endif
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