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Geant4/processes/hadronic/models/binary_cascade/src/G4SigmaMinusField.cc

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Diff markup

Differences between /processes/hadronic/models/binary_cascade/src/G4SigmaMinusField.cc (Version 11.3.0) and /processes/hadronic/models/binary_cascade/src/G4SigmaMinusField.cc (Version 9.6.p3)


  1 //                                                  1 //
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 17 // *                                               17 // *                                                                  *
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 19 // * technical work of the GEANT4 collaboratio     19 // * technical work of the GEANT4 collaboration.                      *
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 24 // *******************************************     24 // ********************************************************************
 25 //                                                 25 //
 26 //                                                 26 //
 27 // -------------------------------------------     27 // -------------------------------------------------------------------
 28 //      GEANT 4 class implementation file          28 //      GEANT 4 class implementation file 
 29 //                                                 29 //
 30 //      CERN, Geneva, Switzerland                  30 //      CERN, Geneva, Switzerland
 31 //                                                 31 //
 32 //      File name:     G4SigmaMinusField.cc        32 //      File name:     G4SigmaMinusField.cc
 33 //                                                 33 //
 34 //      Author:        Alessandro Brunengo (Al     34 //      Author:        Alessandro Brunengo (Alessandro.Brunengo@ge.infn.it)
 35 //                                                 35 // 
 36 //      Creation date: 5 June 2000                 36 //      Creation date: 5 June 2000
 37 // -------------------------------------------     37 // -------------------------------------------------------------------
 38                                                    38 
 39 #include "G4SigmaMinusField.hh"                    39 #include "G4SigmaMinusField.hh"
 40 #include "G4PhysicalConstants.hh"                  40 #include "G4PhysicalConstants.hh"
 41 #include "G4SystemOfUnits.hh"                      41 #include "G4SystemOfUnits.hh"
 42 #include "G4NucleiProperties.hh"                   42 #include "G4NucleiProperties.hh"
 43 #include "G4VNuclearDensity.hh"                    43 #include "G4VNuclearDensity.hh"
 44 #include "G4FermiMomentum.hh"                      44 #include "G4FermiMomentum.hh"
 45 #include "G4SigmaMinus.hh"                         45 #include "G4SigmaMinus.hh"
 46 #include "G4HadTmpUtil.hh"                         46 #include "G4HadTmpUtil.hh"
 47 #include "G4Pow.hh"                            << 
 48                                                    47 
 49 G4SigmaMinusField::G4SigmaMinusField(G4V3DNucl     48 G4SigmaMinusField::G4SigmaMinusField(G4V3DNucleus * nucleus, G4double coeff)
 50   : G4VNuclearField(nucleus)                       49   : G4VNuclearField(nucleus)
 51 {                                                  50 {
 52   theCoeff = coeff;                                51   theCoeff = coeff;
 53 }                                                  52 }
 54                                                    53 
 55 G4SigmaMinusField::~G4SigmaMinusField()            54 G4SigmaMinusField::~G4SigmaMinusField()
 56 { }                                                55 { }
 57                                                    56 
 58 G4double G4SigmaMinusField::GetField(const G4T     57 G4double G4SigmaMinusField::GetField(const G4ThreeVector & aPosition)
 59 {                                                  58 {
 60 // Field is 0 out of the nucleus!                  59 // Field is 0 out of the nucleus!
 61   if(aPosition.mag() >= radius) return 0.0;        60   if(aPosition.mag() >= radius) return 0.0;
 62                                                    61 
 63   G4double sigmaMinusMass = G4SigmaMinus::Sigm     62   G4double sigmaMinusMass = G4SigmaMinus::SigmaMinus()->GetPDGMass();
 64                                                    63 
 65   G4int A = theNucleus->GetMassNumber();           64   G4int A = theNucleus->GetMassNumber();
 66   G4int Z = theNucleus->GetCharge();               65   G4int Z = theNucleus->GetCharge();
 67   G4double bindingEnergy = G4NucleiProperties:     66   G4double bindingEnergy = G4NucleiProperties::GetBindingEnergy(A, Z);
 68   G4double nucleusMass = Z*proton_mass_c2+(A-Z     67   G4double nucleusMass = Z*proton_mass_c2+(A-Z)*neutron_mass_c2+bindingEnergy;
 69   G4double reducedMass = sigmaMinusMass*nucleu     68   G4double reducedMass = sigmaMinusMass*nucleusMass/(sigmaMinusMass+nucleusMass);
 70                                                    69 
 71   const G4VNuclearDensity * nuclearDensity=the     70   const G4VNuclearDensity * nuclearDensity=theNucleus->GetNuclearDensity();
 72   G4double density = nuclearDensity->GetDensit     71   G4double density = nuclearDensity->GetDensity(aPosition);
 73                                                    72 
 74   return -2.*pi*hbarc*hbarc/reducedMass*(2.0)*     73   return -2.*pi*hbarc*hbarc/reducedMass*(2.0)*theCoeff*density+GetBarrier();
 75 }                                                  74 }
 76                                                    75 
 77 G4double G4SigmaMinusField::GetBarrier()           76 G4double G4SigmaMinusField::GetBarrier()
 78 {                                                  77 {
 79   G4double A = theNucleus->GetMassNumber();        78   G4double A = theNucleus->GetMassNumber();
 80   G4double Z = theNucleus->GetCharge();            79   G4double Z = theNucleus->GetCharge();
 81   G4double coulombBarrier = (1.44/1.14) * MeV  <<  80   G4double coulombBarrier = (1.44/1.14) * MeV * Z / (1.0 + std::pow(A,1./3.));
 82   return -coulombBarrier;                          81   return -coulombBarrier;
 83 }                                                  82 }
 84                                                    83 
 85                                                    84