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25 //
26 /*
27 * File: G4FPYBiasedLightFragmentDist.cc
28 * Author: B. Wendt (wendbryc@isu.edu)
29 *
30 * Created on June 2, 2011, 11:02 AM
31 */
32
33 #include "G4FPYBiasedLightFragmentDist.hh"
34
35 #include "G4FFGDebuggingMacros.hh"
36 #include "G4FFGEnumerations.hh"
37 #include "G4FissionProductYieldDist.hh"
38 #include "G4Ions.hh"
39 #include "Randomize.hh"
40 #include "globals.hh"
41
42 G4FPYBiasedLightFragmentDist::G4FPYBiasedLightFragmentDist(
43 G4int WhichIsotope, G4FFGEnumerations::MetaState WhichMetaState,
44 G4FFGEnumerations::FissionCause WhichCause, G4FFGEnumerations::YieldType WhichYieldType,
45 std::istringstream& dataStream)
46 : G4FissionProductYieldDist(WhichIsotope, WhichMetaState, WhichCause, WhichYieldType, dataStream)
47 {
48 // Initialize the class
49 Initialize();
50 }
51
52 G4FPYBiasedLightFragmentDist::G4FPYBiasedLightFragmentDist(
53 G4int WhichIsotope, G4FFGEnumerations::MetaState WhichMetaState,
54 G4FFGEnumerations::FissionCause WhichCause, G4FFGEnumerations::YieldType WhichYieldType,
55 G4int Verbosity, std::istringstream& dataStream)
56 : G4FissionProductYieldDist(WhichIsotope, WhichMetaState, WhichCause, WhichYieldType, Verbosity,
57 dataStream)
58 {
59 // Initialize the class
60 Initialize();
61 }
62
63 void G4FPYBiasedLightFragmentDist::Initialize()
64 {
65 G4FFG_FUNCTIONENTER__
66
67 // Initialize the half-weight for fission product sampling
68 HalfWeight_ = (G4int)floor((Isotope_ % 1000) / 2.0);
69
70 G4FFG_FUNCTIONLEAVE__
71 }
72
73 G4Ions* G4FPYBiasedLightFragmentDist::GetFissionProduct()
74 {
75 G4FFG_FUNCTIONENTER__
76
77 G4Ions* Particle;
78 G4bool IsHeavy;
79 G4bool IsNotFeasable;
80 G4int Counter;
81
82 Counter = 0;
83 do {
84 // If we have sampled too many times then we may need to do something else
85 if (Counter == 1000) {
86 Particle = nullptr;
87 break;
88 }
89
90 // Generate a (0, 1] random number, then find the corresponding particle
91 Particle = FindParticle(RandomEngine_->G4SampleUniform());
92
93 // If the daughter is heavier than half of the original nucleus weight
94 // or not physically feasable then set the flags to sample again
95 IsHeavy = (Particle->GetAtomicMass() > HalfWeight_);
96 IsNotFeasable = (Particle->GetAtomicMass() > RemainingA_ + 1
97 || Particle->GetAtomicNumber() > RemainingZ_ + 1);
98
99 Counter++;
100 } while (IsHeavy || IsNotFeasable); // Loop checking, 11.05.2015, T. Koi
101
102 // Something went wrong, so figure out how to fix it
103 if (Particle == nullptr) {
104 /// \todo Figure out what to do if a suitable particle is not found in 1000 iterations
105 }
106
107 // Return the G4ParticleDefintion pointer to the random light fragment
108 G4FFG_FUNCTIONLEAVE__
109 return Particle;
110 }
111
112 G4FPYBiasedLightFragmentDist::~G4FPYBiasedLightFragmentDist()
113 {
114 G4FFG_FUNCTIONENTER__
115
116 // Empty - all the data elements to be deconstructed are removed by
117 // ~G4FissionProductYieldDist()
118 G4FFG_FUNCTIONLEAVE__
119 }
120