Gabriele Cosmo
107 lines
3.7 KiB
C++
107 lines
3.7 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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// -------------------------------------------------------------------
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// GEANT4 Class file
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//
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// For information related to this code contact:
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//
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// File name: G4VElasticCollision
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//
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// Author: Maria Grazia Pia
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//
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// Creation date: 15 April 1999
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//
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// Modifications:
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//
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// -------------------------------------------------------------------
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#ifndef G4VSCATTERINGCOLLISION_HH
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#define G4VSCATTERINGCOLLISION_HH
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#include "globals.hh"
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#include "G4Log.hh"
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#include "G4VCollision.hh"
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#include "G4VCrossSectionSource.hh"
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#include "G4VAngularDistribution.hh"
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#include "G4KineticTrackVector.hh"
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class G4KineticTrack;
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class G4VScatteringCollision : public G4VCollision
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{
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public:
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G4VScatteringCollision();
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void establish_G4MT_TLS_G4VScatteringCollision();
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virtual ~G4VScatteringCollision();
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G4bool operator==(const G4VScatteringCollision &right) const;
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G4bool operator!=(const G4VScatteringCollision &right) const;
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virtual G4KineticTrackVector* FinalState(const G4KineticTrack& trk1,
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const G4KineticTrack& trk2) const;
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virtual const G4VAngularDistribution* GetAngularDistribution() const
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{
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return theAngularDistribution;
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}
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private:
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G4VScatteringCollision(const G4VScatteringCollision &);
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G4VScatteringCollision & operator= (const G4VScatteringCollision &);
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protected:
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virtual const std::vector<const G4ParticleDefinition*> & GetOutgoingParticles() const = 0;
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private:
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double BrWigInt0(const double x, const double gamma, const double m0) const
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{ return 2.0*gamma*std::atan( 2.0 * (x-m0)/ gamma ); }
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G4double BrWigInt1(const G4double x, const G4double gamma, const G4double m0) const
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{ return 0.5*gamma*gamma*G4Log( (x-m0)*(x-m0)+gamma*gamma/4.0 ) + m0*BrWigInt0(x,gamma,m0); }
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double BrWigInv(const double x, const double gamma, const double m0) const
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{ return 0.5*gamma*std::tan( 0.5*x/gamma )+m0; }
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double SampleResonanceMass(const double poleMass,
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const double width,
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const double minMass,
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const double maxMass) const;
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private:
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G4VAngularDistribution * theAngularDistribution;
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};
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#endif
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