Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/models/binary_cascade/src/G4PionZeroField.cc

Version: [ ReleaseNotes ] [ 1.0 ] [ 1.1 ] [ 2.0 ] [ 3.0 ] [ 3.1 ] [ 3.2 ] [ 4.0 ] [ 4.0.p1 ] [ 4.0.p2 ] [ 4.1 ] [ 4.1.p1 ] [ 5.0 ] [ 5.0.p1 ] [ 5.1 ] [ 5.1.p1 ] [ 5.2 ] [ 5.2.p1 ] [ 5.2.p2 ] [ 6.0 ] [ 6.0.p1 ] [ 6.1 ] [ 6.2 ] [ 6.2.p1 ] [ 6.2.p2 ] [ 7.0 ] [ 7.0.p1 ] [ 7.1 ] [ 7.1.p1 ] [ 8.0 ] [ 8.0.p1 ] [ 8.1 ] [ 8.1.p1 ] [ 8.1.p2 ] [ 8.2 ] [ 8.2.p1 ] [ 8.3 ] [ 8.3.p1 ] [ 8.3.p2 ] [ 9.0 ] [ 9.0.p1 ] [ 9.0.p2 ] [ 9.1 ] [ 9.1.p1 ] [ 9.1.p2 ] [ 9.1.p3 ] [ 9.2 ] [ 9.2.p1 ] [ 9.2.p2 ] [ 9.2.p3 ] [ 9.2.p4 ] [ 9.3 ] [ 9.3.p1 ] [ 9.3.p2 ] [ 9.4 ] [ 9.4.p1 ] [ 9.4.p2 ] [ 9.4.p3 ] [ 9.4.p4 ] [ 9.5 ] [ 9.5.p1 ] [ 9.5.p2 ] [ 9.6 ] [ 9.6.p1 ] [ 9.6.p2 ] [ 9.6.p3 ] [ 9.6.p4 ] [ 10.0 ] [ 10.0.p1 ] [ 10.0.p2 ] [ 10.0.p3 ] [ 10.0.p4 ] [ 10.1 ] [ 10.1.p1 ] [ 10.1.p2 ] [ 10.1.p3 ] [ 10.2 ] [ 10.2.p1 ] [ 10.2.p2 ] [ 10.2.p3 ] [ 10.3 ] [ 10.3.p1 ] [ 10.3.p2 ] [ 10.3.p3 ] [ 10.4 ] [ 10.4.p1 ] [ 10.4.p2 ] [ 10.4.p3 ] [ 10.5 ] [ 10.5.p1 ] [ 10.6 ] [ 10.6.p1 ] [ 10.6.p2 ] [ 10.6.p3 ] [ 10.7 ] [ 10.7.p1 ] [ 10.7.p2 ] [ 10.7.p3 ] [ 10.7.p4 ] [ 11.0 ] [ 11.0.p1 ] [ 11.0.p2 ] [ 11.0.p3, ] [ 11.0.p4 ] [ 11.1 ] [ 11.1.1 ] [ 11.1.2 ] [ 11.1.3 ] [ 11.2 ] [ 11.2.1 ] [ 11.2.2 ] [ 11.3.0 ] 

  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.                             *
 10 // *                                                                  *
 11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // ********************************************************************
 25 //
 26 //
 27 // -------------------------------------------------------------------
 28 //      GEANT 4 class implementation file 
 29 //
 30 //      CERN, Geneva, Switzerland
 31 //
 32 //      File name:     G4PionZeroField.cc
 33 //
 34 //      Author:        Alessandro Brunengo (Alessandro.Brunengo@ge.infn.it)
 35 // 
 36 //      Creation date: 5 June 2000
 37 // -------------------------------------------------------------------
 38 
 39 #include "G4PionZeroField.hh"
 40 #include "G4PhysicalConstants.hh"
 41 #include "G4NucleiProperties.hh"
 42 #include "G4VNuclearDensity.hh"
 43 #include "G4FermiMomentum.hh"
 44 #include "G4PionZero.hh"
 45 #include "G4HadTmpUtil.hh"
 46 
 47 G4PionZeroField::G4PionZeroField(G4V3DNucleus * nucleus, G4double coeff)
 48   : G4VNuclearField(nucleus)
 49 {
 50   theCoeff = coeff;
 51 }
 52 
 53 
 54 G4PionZeroField::~G4PionZeroField()
 55 { }
 56 
 57 G4double G4PionZeroField::GetField(const G4ThreeVector & aPosition)
 58 {
 59 // Field is 0 out of the nucleus!
 60   if(aPosition.mag() >= radius) return 0.0;
 61 
 62   G4double pionZeroMass = G4PionZero::PionZero()->GetPDGMass();
 63   G4int A = theNucleus->GetMassNumber();
 64   G4int Z = theNucleus->GetCharge();
 65 
 66   G4double bindingEnergy = G4NucleiProperties::GetBindingEnergy(A, Z);
 67   G4double nucleusMass = Z*proton_mass_c2+(A-Z)*neutron_mass_c2+bindingEnergy;
 68   G4double reducedMass = pionZeroMass*nucleusMass/(pionZeroMass+nucleusMass);
 69 
 70 
 71   G4double density = A*theNucleus->GetNuclearDensity()->GetDensity(aPosition);
 72   G4double nucleonMass = (proton_mass_c2+neutron_mass_c2)/2;
 73 
 74   return 2.*pi*hbarc*hbarc/reducedMass*(1+pionZeroMass/nucleonMass)*theCoeff*density;
 75 }
 76 
 77 G4double G4PionZeroField::GetBarrier()
 78 {
 79   return 0;
 80 }
 81