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25 //
26 //
27
28 #include "G4DNABornExcitationModel1.hh"
29 #include "G4SystemOfUnits.hh"
30 #include "G4DNAChemistryManager.hh"
31 #include "G4DNAMolecularMaterial.hh"
32 #include <map>
33
34 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
35
36 using namespace std;
37
38 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
39
40 G4DNABornExcitationModel1::G4DNABornExcitationModel1(const G4ParticleDefinition*,
41 const G4String& nam) :
42 G4VEmModel(nam)
43 {
44 fpMolWaterDensity = nullptr;
45 fHighEnergy = 0;
46 fLowEnergy = 0;
47 fParticleDefinition = nullptr;
48
49 verboseLevel = 0;
50 // Verbosity scale:
51 // 0 = nothing
52 // 1 = warning for energy non-conservation
53 // 2 = details of energy budget
54 // 3 = calculation of cross sections, file openings, sampling of atoms
55 // 4 = entering in methods
56
57 if (verboseLevel > 0)
58 {
59 G4cout << "Born excitation model is constructed " << G4endl;
60 }
61 fParticleChangeForGamma = nullptr;
62
63 // Selection of stationary mode
64
65 statCode = false;
66 }
67
68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
69
70 G4DNABornExcitationModel1::~G4DNABornExcitationModel1()
71 {
72 // Cross section
73
74 delete fTableData;
75 }
76
77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
78
79 void G4DNABornExcitationModel1::Initialise(const G4ParticleDefinition* particle,
80 const G4DataVector& /*cuts*/)
81 {
82
83 if (verboseLevel > 3)
84 {
85 G4cout << "Calling G4DNABornExcitationModel1::Initialise()" << G4endl;
86 }
87
88 if(fParticleDefinition != nullptr && fParticleDefinition != particle)
89 {
90 G4Exception("G4DNABornExcitationModel1::Initialise","em0001",
91 FatalException,"Model already initialized for another particle type.");
92 }
93
94 fParticleDefinition = particle;
95
96 if(particle->GetParticleName() == "e-")
97 {
98 fTableFile = "dna/sigma_excitation_e_born";
99 fLowEnergy = 9*eV;
100 fHighEnergy = 1*MeV;
101 }
102 else if(particle->GetParticleName() == "proton")
103 {
104 fTableFile = "dna/sigma_excitation_p_born";
105 fLowEnergy = 500. * keV;
106 fHighEnergy = 100. * MeV;
107 }
108
109 SetLowEnergyLimit(fLowEnergy);
110 SetHighEnergyLimit(fHighEnergy);
111
112 G4double scaleFactor = (1.e-22 / 3.343) * m*m;
113 fTableData = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,scaleFactor );
114 fTableData->LoadData(fTableFile);
115
116 if( verboseLevel>0 )
117 {
118 G4cout << "Born excitation model is initialized " << G4endl
119 << "Energy range: "
120 << LowEnergyLimit() / eV << " eV - "
121 << HighEnergyLimit() / keV << " keV for "
122 << particle->GetParticleName()
123 << G4endl;
124 }
125
126 // Initialize water density pointer
127 fpMolWaterDensity = G4DNAMolecularMaterial::Instance()->GetNumMolPerVolTableFor(G4Material::GetMaterial("G4_WATER"));
128
129 if (isInitialised)
130 { return;}
131 fParticleChangeForGamma = GetParticleChangeForGamma();
132 isInitialised = true;
133 }
134
135 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
136
137 G4double G4DNABornExcitationModel1::CrossSectionPerVolume(const G4Material* material,
138 const G4ParticleDefinition* particleDefinition,
139 G4double ekin,
140 G4double,
141 G4double)
142 {
143 if (verboseLevel > 3)
144 {
145 G4cout << "Calling CrossSectionPerVolume() of G4DNABornExcitationModel1"
146 << G4endl;
147 }
148
149 if(particleDefinition != fParticleDefinition) return 0;
150
151 // Calculate total cross section for model
152
153 G4double sigma=0;
154
155 G4double waterDensity = (*fpMolWaterDensity)[material->GetIndex()];
156
157 if (ekin >= fLowEnergy && ekin <= fHighEnergy)
158 {
159 sigma = fTableData->FindValue(ekin);
160 }
161
162 if (verboseLevel > 2)
163 {
164 G4cout << "__________________________________" << G4endl;
165 G4cout << "G4DNABornExcitationModel1 - XS INFO START" << G4endl;
166 G4cout << "Kinetic energy(eV)=" << ekin/eV << " particle : " << particleDefinition->GetParticleName() << G4endl;
167 G4cout << "Cross section per water molecule (cm^2)=" << sigma/cm/cm << G4endl;
168 G4cout << "Cross section per water molecule (cm^-1)=" << sigma*waterDensity/(1./cm) << G4endl;
169 G4cout << "G4DNABornExcitationModel1 - XS INFO END" << G4endl;
170 }
171
172 return sigma*waterDensity;
173 }
174
175 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
176
177 void G4DNABornExcitationModel1::SampleSecondaries(std::vector<G4DynamicParticle*>* /*fvect*/,
178 const G4MaterialCutsCouple* /*couple*/,
179 const G4DynamicParticle* aDynamicParticle,
180 G4double,
181 G4double)
182 {
183
184 if (verboseLevel > 3)
185 {
186 G4cout << "Calling SampleSecondaries() of G4DNABornExcitationModel1"
187 << G4endl;
188 }
189
190 G4double k = aDynamicParticle->GetKineticEnergy();
191
192 G4int level = RandomSelect(k);
193 G4double excitationEnergy = waterStructure.ExcitationEnergy(level);
194 G4double newEnergy = k - excitationEnergy;
195
196 if (newEnergy > 0)
197 {
198 fParticleChangeForGamma->ProposeMomentumDirection(aDynamicParticle->GetMomentumDirection());
199
200 if (!statCode) fParticleChangeForGamma->SetProposedKineticEnergy(newEnergy);
201 else fParticleChangeForGamma->SetProposedKineticEnergy(k);
202
203 fParticleChangeForGamma->ProposeLocalEnergyDeposit(excitationEnergy);
204 }
205
206 const G4Track * theIncomingTrack = fParticleChangeForGamma->GetCurrentTrack();
207 G4DNAChemistryManager::Instance()->CreateWaterMolecule(eExcitedMolecule,
208 level,
209 theIncomingTrack);
210 }
211
212 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
213
214 G4double G4DNABornExcitationModel1::GetPartialCrossSection(const G4Material*,
215 G4int level,
216 const G4ParticleDefinition* particle,
217 G4double kineticEnergy)
218 {
219 if (fParticleDefinition != particle)
220 {
221 G4Exception("G4DNABornExcitationModel1::GetPartialCrossSection",
222 "bornParticleType",
223 FatalException,
224 "Model initialized for another particle type.");
225 }
226
227 return fTableData->GetComponent(level)->FindValue(kineticEnergy);
228 }
229
230 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
231
232 G4int G4DNABornExcitationModel1::RandomSelect(G4double k)
233 {
234 G4int level = 0;
235
236 auto valuesBuffer = new G4double[fTableData->NumberOfComponents()];
237 const auto n = (G4int)fTableData->NumberOfComponents();
238 G4int i(n);
239 G4double value = 0.;
240
241 while (i > 0)
242 {
243 i--;
244 valuesBuffer[i] = fTableData->GetComponent(i)->FindValue(k);
245 value += valuesBuffer[i];
246 }
247
248 value *= G4UniformRand();
249 i = n;
250
251 while (i > 0)
252 {
253 i--;
254
255 if (valuesBuffer[i] > value)
256 {
257 delete[] valuesBuffer;
258 return i;
259 }
260 value -= valuesBuffer[i];
261 }
262
263
264 delete[] valuesBuffer;
265
266 return level;
267 }
268
269