include/Geant4/G4INCLReflectionChannel.hh

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 // INCL++ intra-nuclear cascade model
0027 // Alain Boudard, CEA-Saclay, France
0028 // Joseph Cugnon, University of Liege, Belgium
0029 // Jean-Christophe David, CEA-Saclay, France
0030 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
0031 // Sylvie Leray, CEA-Saclay, France
0032 // Davide Mancusi, CEA-Saclay, France
0033 //
0034 #define INCLXX_IN_GEANT4_MODE 1
0035
0036 #include "globals.hh"
0037
0038 #include "G4INCLParticle.hh"
0039 #include "G4INCLIChannel.hh"
0040 #include "G4INCLNucleus.hh"
0041 #include "G4INCLAllocationPool.hh"
0042
0043 #ifndef REFLECTIONCHANNEL_HH_
0044 #define REFLECTIONCHANNEL_HH_
0045 namespace G4INCL {
0046   class FinalState;
0047
0048   class ReflectionChannel : public IChannel {
0049   public:
0050     ReflectionChannel(Nucleus *n, Particle *p);
0051     virtual ~ReflectionChannel();
0052
0053     void fillFinalState(FinalState *fs);
0054
0055   private:
0056     /** \brief Sine^2 of the smallest acceptable reflection angle / 4
0057      *
0058      * Particles impinging almost tangentially on the surface generate a large
0059      * number of reflections. If the impinging angle is larger than a certain
0060      * limit, we move the particle a bit towards the inside of the nucleus.
0061      * The limit angle is arbitrarily chosen to correspond to 100 reflections
0062      * per orbit. The position scaling factor is given by the
0063      * positionScalingFactor member.
0064      */
0065     static const G4double sinMinReflectionAngleSquaredOverFour;
0066     /// \brief Scaling factor for excessively tangential reflection
0067     static const G4double positionScalingFactor;
0068     Nucleus *theNucleus;
0069     Particle *theParticle;
0070
0071     INCL_DECLARE_ALLOCATION_POOL(ReflectionChannel)
0072   };
0073 }
0074 #endif //REFLECTIONCHANNEL_HH_