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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 source file
30 //
31 // File name: G4LevelManager
32 //
33 // Author: V.Ivanchenko
34 //
35 // Creation date: 4 January 2012
36 //
37 // Modifications:
38 // 13.02.2015 Design change for gamma de-excitation
39 //
40 // -------------------------------------------------------------------
41
42 #include "G4LevelManager.hh"
43 #include "G4NuclearLevelData.hh"
44 #include "G4ShellCorrection.hh"
45 #include "G4HadronicException.hh"
46 #include "G4Pow.hh"
47 #include <iomanip>
48 #include <CLHEP/Units/SystemOfUnits.h>
49
50 G4String G4LevelManager::fFloatingLevels[] = {
51 "-", "+X", "+Y", "+Z", "+U", "+V", "+W", "+R", "+S", "+T", "+A", "+B", "+C"};
52
53 G4LevelManager::G4LevelManager(G4int Z, G4int A, std::size_t ntrans,
54 const std::vector<G4double>& energies,
55 const std::vector<G4int>& spin,
56 const std::vector<const G4NucLevel*>& levels)
57 : nTransitions(0)
58 {
59 if(0 < ntrans) {
60 nTransitions = ntrans - 1;
61 fLevelEnergy.reserve(ntrans);
62 fSpin.reserve(ntrans);
63 fLevels.reserve(ntrans);
64 for(std::size_t i=0; i<ntrans; ++i) {
65 fLevelEnergy.push_back(energies[i]);
66 fSpin.push_back(spin[i]);
67 fLevels.push_back(levels[i]);
68 }
69 //G4cout << "New G4LevelManager N= " << nTransitions << " "
70 //<< fLevelEnergy.size() << " <" << this << ">" << G4endl;
71 }
72 auto ndata = G4NuclearLevelData::GetInstance();
73 fLevelDensity = ndata->GetLevelDensity(Z, A, 0.0);
74
75 // J. Nucl. Sci. Tech. 31(2): 151-162 (1994)
76 fShellCorrection = ndata->GetShellCorrection()->GetShellCorrection(A,Z);
77 if(A > 20) {
78 G4int N = A - Z;
79 G4int In = N - (N/2)*2;
80 G4int Iz = Z - (Z/2)*2;
81 G4double a13 = 1.0/G4Pow::GetInstance()->Z13(A);
82 if(In == 0 && Iz == 0) {
83 fLevelDensity = 0.067946*A*(1.0 + 4.1277*a13);
84 } else if(In == 0 && Iz == 1) {
85 fLevelDensity = 0.053061*A*(1.0 + 7.1862*a13);
86 } else if(In == 1 && Iz == 0) {
87 fLevelDensity = 0.060920*A*(1.0 + 3.8767*a13);
88 } else {
89 fLevelDensity = 0.065291*A*(1.0 + 4.4505*a13);
90 }
91 }
92 }
93
94 G4LevelManager::~G4LevelManager()
95 {
96 for(std::size_t i=0; i<=nTransitions; ++i) { delete fLevels[i]; }
97 }
98
99 std::size_t G4LevelManager::NearestLevelIndex(const G4double energy,
100 const std::size_t index) const
101 {
102 std::size_t idx = std::min(index, nTransitions);
103 static const G4double tolerance = 10*CLHEP::eV;
104 if(0 == nTransitions || std::abs(energy - fLevelEnergy[idx]) <= tolerance) {
105 return idx;
106 }
107 idx = NearestLowEdgeLevelIndex(energy);
108 if(idx < nTransitions &&
109 (fLevelEnergy[idx] + fLevelEnergy[idx+1])*0.5 <= energy) { ++idx; }
110
111 return idx;
112 }
113
114 const G4String& G4LevelManager::FloatingType(const std::size_t i) const
115 {
116 return fFloatingLevels[fSpin[i]/100000];
117 }
118
119 void G4LevelManager::StreamInfo(std::ostream& out) const
120 {
121 for(std::size_t i=0; i<=nTransitions; ++i) {
122 G4long prec = out.precision(6);
123 out << std::setw(6) << i << ". "
124 << std::setw(8) << fLevelEnergy[i];
125 if(fLevels[i]) {
126 out << std::setw(8) << fLevels[i]->GetTimeGamma()
127 << std::setw(4) << fLevels[i]->NumberOfTransitions()
128 << std::setw(4) << std::abs(TwoSpinParity(i))
129 << std::setw(4) << Parity(i)
130 << std::setw(4) << FloatingLevel(i);
131 }
132 out << "\n";
133 out.precision(prec);
134 if(fLevels[i]) { fLevels[i]->StreamInfo(out); }
135 }
136 }
137