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26 // 26 //
>> 27 // GEANT4 tag $Name: geant4-08-01-patch-01 $
>> 28 //
>> 29 //
27 // GEANT4 physics class: G4PhotoNuclearCrossSe 30 // GEANT4 physics class: G4PhotoNuclearCrossSection -- header file
28 // Created: M.V. Kossov, CERN/ITEP(Moscow), 10 31 // Created: M.V. Kossov, CERN/ITEP(Moscow), 10-OCT-01
29 // The last update: M.V. Kossov, CERN/ITEP (Mo 32 // The last update: M.V. Kossov, CERN/ITEP (Moscow) 17-May-02
>> 33 //
30 34
31 #ifndef G4PhotoNuclearCrossSection_h 35 #ifndef G4PhotoNuclearCrossSection_h
32 #define G4PhotoNuclearCrossSection_h 1 36 #define G4PhotoNuclearCrossSection_h 1
33 37
34 #include "G4VCrossSectionDataSet.hh" 38 #include "G4VCrossSectionDataSet.hh"
>> 39 /////////#include "G4HadronCrossSections.hh"
35 #include "G4DynamicParticle.hh" 40 #include "G4DynamicParticle.hh"
36 #include "G4Element.hh" 41 #include "G4Element.hh"
>> 42 //#include "G4QPDGCode.hh"
37 #include "G4ParticleTable.hh" 43 #include "G4ParticleTable.hh"
38 #include "G4NucleiProperties.hh" 44 #include "G4NucleiProperties.hh"
39 #include "G4NistManager.hh" << 45 #include "G4NucleiPropertiesTable.hh"
40 #include <vector> 46 #include <vector>
41 47
42 class G4PhotoNuclearCrossSection : public G4VC 48 class G4PhotoNuclearCrossSection : public G4VCrossSectionDataSet
43 { 49 {
44 public: 50 public:
45 <<
46 G4PhotoNuclearCrossSection(); <<
47 ~G4PhotoNuclearCrossSection() override; <<
48 <<
49 static const char* Default_Name() {return <<
50 <<
51 void CrossSectionDescription(std::ostream& <<
52 <<
53 G4bool IsIsoApplicable(const G4DynamicPart <<
54 const G4Element* el <<
55 const G4Material* mat = nullptr) over <<
56 <<
57 G4bool IsElementApplicable(const G4Dynamic <<
58 const G4Materia <<
59 <<
60 G4double GetIsoCrossSection(const G4Dynami <<
61 G4int Z, G4int <<
62 const G4Isotop <<
63 const G4Elemen <<
64 const G4Materi <<
65 <<
66 G4double GetElementCrossSection(const G4Dy <<
67 const G4Ma <<
68 <<
69 G4double ComputeElementXSection(G4double e <<
70 <<
71 G4double ComputeIsoXSection(G4double energ <<
72 <<
73 G4PhotoNuclearCrossSection& operator= <<
74 (const G4PhotoNuclearCrossSection& right) <<
75 G4PhotoNuclearCrossSection(const G4PhotoNu <<
76 51
>> 52 G4PhotoNuclearCrossSection() // Constructor @@??
>> 53 {
>> 54 //theHadronCrossSections = G4HadronCrossSections::Instance();
>> 55 }
>> 56
>> 57 ~G4PhotoNuclearCrossSection() {}
>> 58
>> 59 G4bool IsApplicable(const G4DynamicParticle* aParticle, const G4Element* )
>> 60 {
>> 61 //return theHadronCrossSections->IsApplicable(aParticle, anElement);
>> 62 // Possible prototype
>> 63 G4bool result = false;
>> 64 if( aParticle->GetDefinition()->GetPDGEncoding()==22) result = true;
>> 65 return result;
>> 66 }
>> 67
>> 68 G4double GetCrossSection(const G4DynamicParticle* aParticle, const G4Element* anElement,
>> 69 G4double T=0.);
>> 70 //{
>> 71 // return theHadronCrossSections->GetInelasticCrossSection(aParticle,
>> 72 // anElement);
>> 73 //}
>> 74
>> 75 void BuildPhysicsTable(const G4ParticleDefinition&) {}
>> 76
>> 77 void DumpPhysicsTable(const G4ParticleDefinition&) {}
>> 78
>> 79 private:
>> 80 G4int GetFunctions(G4double a, G4double* y, G4double* z);
>> 81 //G4double LinearFit(G4double X, G4int N, const G4double* XN, const G4double* YN);
>> 82 G4double EquLinearFit(G4double X, G4int N,const G4double X0,const G4double XD, const G4double* Y);
>> 83 G4double ThresholdEnergy(G4int Z, G4int N);
>> 84
>> 85 // Body
77 private: 86 private:
78 << 87 static G4int lastN; // The last N of calculated nucleus
79 G4int GetFunctions(G4double a, G4double* y << 88 static G4int lastZ; // The last Z of calculated nucleus
80 G4double EquLinearFit(G4double X, G4int N, << 89 static G4double lastSig; // Last value of the Cross Section
81 const G4double XD, c << 90 static G4double* lastGDR; // Pointer to the last array of GDR cross sections
82 G4double ThresholdEnergy(G4int Z, G4int N) << 91 static G4double* lastHEN; // Pointer to the last array of HEn cross sections
83 << 92 static G4double lastE; // Last used in the cross section Energy
84 G4int lastZ = 0; // The last Z << 93 static G4double lastTH; // Last value of the Energy Threshold (A-dependent)
85 G4double lastSig = 0.0; // Last value << 94 static G4double lastSP; // Last value of the ShadowingPomeron (A-dependent)
86 G4double* lastGDR = nullptr; // Pointer to << 95
87 G4double* lastHEN = nullptr; // Pointer to << 96 //G4HadronCrossSections* theHadronCrossSections;
88 G4double lastE = 0.0; // Last used <<
89 G4double lastTH = 0.0; // Last value <<
90 G4double lastSP = 0.0; // Last value <<
91 <<
92 // Vector of pointers to the GDRPhotonucle <<
93 std::vector <G4double*> GDR; <<
94 <<
95 // store deuteron, triton, He3 XS <<
96 G4double* deuteron_GDR = nullptr; <<
97 G4double* deuteron_HR = nullptr; <<
98 G4double deuteron_TH = 0.0; <<
99 G4double deuteron_SP = 0.0; <<
100 G4double* triton_GDR = nullptr; <<
101 G4double* triton_HR = nullptr; <<
102 G4double triton_TH = 0.0; <<
103 G4double triton_SP = 0.0; <<
104 G4double* he3_GDR = nullptr; <<
105 G4double* he3_HR = nullptr; <<
106 G4double he3_TH = 0.0; <<
107 G4double he3_SP = 0.0; <<
108 <<
109 // Vector of pointers to the HighEnPhotonu <<
110 std::vector <G4double*> HEN; <<
111 <<
112 std::vector <G4double> spA; // shadowing <<
113 std::vector <G4double> eTH; // energy t <<
114 <<
115 G4NistManager* nistmngr; <<
116 <<
117 G4double mNeut; <<
118 G4double mProt; <<
119 }; 97 };
>> 98
>> 99 // Gives the threshold energy for different nuclei (min of p- and n-threshold)
>> 100 inline G4double G4PhotoNuclearCrossSection::ThresholdEnergy(G4int Z, G4int N)
>> 101 {
>> 102 // CHIPS - Direct GEANT
>> 103 //static const G4double mNeut = G4QPDGCode(2112).GetMass();
>> 104 //static const G4double mProt = G4QPDGCode(2212).GetMass();
>> 105 static const G4double mNeut = G4NucleiProperties::GetNuclearMass(1,0);
>> 106 static const G4double mProt = G4NucleiProperties::GetNuclearMass(1,1);
>> 107 // ---------
>> 108 static const G4double infEn = 9.e27;
>> 109
>> 110 G4int A=Z+N;
>> 111 if(A<1) return infEn;
>> 112 else if(A==1) return 134.9766; // Pi0 threshold for the nucleon
>> 113 // CHIPS - Direct GEANT
>> 114 //G4double mT= G4QPDGCode(111).GetNuclMass(Z,N,0);
>> 115 G4double mT= 0.;
>> 116 if(G4NucleiPropertiesTable::IsInTable(Z,A)) mT=G4NucleiProperties::GetNuclearMass(A,Z);
>> 117 else
>> 118 {
>> 119 G4cerr<<"G4PhotoNucCrossSect.hh::ThreshEn:Z="<<Z<<",A="<<A<<" element isn't in G4NucPr"<<G4endl;
>> 120 return 0.; // If it is not in the Table of Stable Nuclei, then the Threshold=inf
>> 121 }
>> 122 // ---------
>> 123 G4double mP= infEn;
>> 124 //if(Z) mP= G4QPDGCode(111).GetNuclMass(Z-1,N,0);
>> 125 if(Z&&G4NucleiPropertiesTable::IsInTable(Z-1,A-1)) mP=G4NucleiProperties::GetNuclearMass(A-1,Z-1);
>> 126 else
>> 127 {
>> 128 G4cerr<<"G4PhotoNucCrossSect.hh::ThrEn:Z="<<Z-1<<",A="<<A-1<<" element isn't in G4NucP"<<G4endl;
>> 129 }
>> 130 G4double mN= infEn;
>> 131 //if(N) mN= G4QPDGCode(111).GetNuclMass(Z,N-1,0);
>> 132 if(N&&G4NucleiPropertiesTable::IsInTable(Z,A-1)) mN=G4NucleiProperties::GetNuclearMass(A-1,Z);
>> 133 else
>> 134 {
>> 135 G4cerr<<"G4PhotoNucCrossSect.hh::ThreshEn:Z="<<Z<<",A="<<A-1<<" element isn't in G4NuP"<<G4endl;
>> 136 }
>> 137 G4double dP= mP+mProt-mT;
>> 138 G4double dN= mN+mNeut-mT;
>> 139 if(dP<dN)dN=dP;
>> 140 return dN;
>> 141 }
120 142
121 #endif 143 #endif
122 144