Gabriele Cosmo
139 lines
4.9 KiB
C++
139 lines
4.9 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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// $Id: G4LowEnergyPolarizedCompton.hh,v 1.9 2006/06/29 19:36:05 gunter Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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// CERN Geneva Switzerland
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//
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// --------- G4LowEnergyPolarizedCompton class -----
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//
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// by G.Depaola & F.Longo (21 may 2001)
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// 24 May 2001 - MGP Modified to inherit from G4VDiscreteProcess
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// 25 May 2001 - MGP Added protections to avoid crashes
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//
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// 17 October 2001 - F.Longo Major revision according to design iteration
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//
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// 21 February 2002 - F.Longo Revisions with A.Zoglauer and G.Depaola
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// - better description of parallelism
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// - system of ref change method improved
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//
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//
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// Class description:
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// Low Energy electromagnetic process, Polarised Compton scattering
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// Further documentation available from http://www.ge.infn.it/geant4/lowE
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// ------------------------------------------------------------
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#ifndef G4LOWENERGYPOLARIZEDCOMPTON_H
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#define G4LOWENERGYPOLARIZEDCOMPTON_H 1
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#include "globals.hh"
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#include "G4VDiscreteProcess.hh"
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class G4Track;
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class G4Step;
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class G4ParticleDefinition;
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class G4VParticleChange;
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class G4VEMDataSet;
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class G4VCrossSectionHandler;
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class G4VRangeTest;
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class G4LowEnergyPolarizedCompton : public G4VDiscreteProcess
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{
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public:
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G4LowEnergyPolarizedCompton(const G4String& processName = "polarLowEnCompt");
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~G4LowEnergyPolarizedCompton();
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G4bool IsApplicable(const G4ParticleDefinition& definition);
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void BuildPhysicsTable(const G4ParticleDefinition& photon);
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G4VParticleChange* PostStepDoIt(const G4Track& aTrack, const G4Step& aStep);
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// For testing purpose only
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G4double DumpMeanFreePath(const G4Track& aTrack,
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G4double previousStepSize,
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G4ForceCondition* condition)
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{ return GetMeanFreePath(aTrack, previousStepSize, condition); }
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protected:
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G4double GetMeanFreePath(const G4Track& aTrack,
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G4double previousStepSize,
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G4ForceCondition* condition);
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private:
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// Hide copy constructor and assignment operator as private
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G4LowEnergyPolarizedCompton& operator=(const G4LowEnergyPolarizedCompton&
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right);
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G4LowEnergyPolarizedCompton(const G4LowEnergyPolarizedCompton& );
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G4double lowEnergyLimit; // low energy limit applied to the process
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G4double highEnergyLimit; // high energy limit applied to the process
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G4VEMDataSet* meanFreePathTable;
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G4VEMDataSet* scatterFunctionData;
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G4VCrossSectionHandler* crossSectionHandler;
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G4VRangeTest* rangeTest;
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const G4double intrinsicLowEnergyLimit; // intrinsic validity range
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const G4double intrinsicHighEnergyLimit;
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// specific methods for polarization
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G4ThreeVector GetRandomPolarization(G4ThreeVector& direction0); // Random Polarization
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G4ThreeVector GetPerpendicularPolarization(const G4ThreeVector& direction0, const G4ThreeVector& polarization0) const;
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G4ThreeVector SetPerpendicularVector(G4ThreeVector& a); // temporary
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G4ThreeVector SetNewPolarization(G4double epsilon, G4double sinSqrTheta,
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G4double phi, G4double cosTheta);
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G4double SetPhi(G4double, G4double);
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void SystemOfRefChange(G4ThreeVector& direction0, G4ThreeVector& direction1,
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G4ThreeVector& polarization0, G4ThreeVector& polarization1);
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};
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#endif
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