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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 header file
30 //
31 // File name: G4NuDEXNeutronCaptureModel
32 //
33 // Author: E.Mendoza & A.Ribon
34 //
35 // Creation date: 29 May 2024
36 //
37 // Description: This class (a proxy of the class G4NuDEX) uses
38 // the NuDEX model to produce gammas and internal
39 // conversion electrons from neutron capture.
40 // Whenever NuDEX is not applicable, G4PhotonEvaporation
41 // is used.
42 // The implementation of this class follows the code
43 // of the class G4NeutronRadCapture.
44 //
45 // Modifications:
46 //
47 // -------------------------------------------------------------------
48 //
49 // Class to use NuDEX model inside Geant4
50 //
51
52 #ifndef G4NUDEXNEUTRONCAPTUREMODEL_HH
53 #define G4NUDEXNEUTRONCAPTUREMODEL_HH 1
54
55 #include "globals.hh"
56 #include "G4HadronicInteraction.hh"
57 #include "G4HadProjectile.hh"
58 #include "G4Nucleus.hh"
59
60 class G4NuDEXStatisticalNucleus;
61 class G4VEvaporationChannel;
62
63
64 #define G4NUDEX_MAXZA 120000
65
66
67 class G4NuDEXNeutronCaptureModel : public G4HadronicInteraction {
68 public:
69 explicit G4NuDEXNeutronCaptureModel();
70 virtual ~G4NuDEXNeutronCaptureModel();
71
72 virtual G4HadFinalState* ApplyYourself( const G4HadProjectile &aTrack, G4Nucleus &targetNucleus ) final;
73 virtual void InitialiseModel() final;
74
75 private:
76 G4NuDEXNeutronCaptureModel & operator=( const G4NuDEXNeutronCaptureModel &right ) = delete;
77 G4NuDEXNeutronCaptureModel( const G4NuDEXNeutronCaptureModel& ) = delete;
78
79 G4int GenerateNeutronCaptureCascade( G4int theZ, G4int theA, G4double NeutronEnergy, G4int InitialLevel,
80 std::vector< char >& pType, std::vector< G4double >& pEnergy, std::vector< G4double >& pTime );
81
82 // Initial level for neutron capture. If jspinx2v < 0 it is sampled according to the 2J+1 rule
83 // l-spin = 0, 1, 2 --> s-wave, p-wave, d-wave ...
84 G4int SelectInitialLevel( G4int theCompoundZ, G4int theCompoundA, G4double NeutronEnergy, G4int lspin, G4int jspinx2 );
85 G4int SampleJ( G4int theCompoundZ, G4int theCompoundA, G4int lspin );
86 G4int GetAllowedJx2values( G4int theCompoundZ, G4int theCompoundA, G4int lspin, G4int* jx2vals );
87
88 const G4NuDEXStatisticalNucleus* GetStatisticalNucleus( G4int za ) { return theStatisticalNucleus[za]; }
89 G4int Init( G4int theZA, unsigned int seed1 = 0, unsigned int seed2 = 0, unsigned int seed3 = 0 );
90 void SetBandWidth( G4double bandWidth ) { BandWidth = bandWidth; }
91 void SetBrOption( G4int brOption ) { BrOption = brOption; }
92
93 G4NuDEXStatisticalNucleus* theStatisticalNucleus[G4NUDEX_MAXZA];
94 G4int HasData[G4NUDEX_MAXZA]; // -1:no; 0:don't know; 1:yes
95 G4String NuDEXLibDirectory;
96 G4int BrOption;
97 G4double BandWidth;
98
99 G4int secID; // creator model ID for the other secondaries produced by this model
100 G4double lowestEnergyLimit;
101 G4double minExcitation;
102 G4VEvaporationChannel* photonEvaporation; // Needed when NuDEX is not applicable
103 };
104
105 #endif
106