source: trunk/source/processes/electromagnetic/lowenergy/src/G4CrossSectionIonisationRudd.cc@ 1005

Last change on this file since 1005 was 991, checked in by garnier, 17 years ago

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25//
26// $Id: G4CrossSectionIonisationRudd.cc,v 1.4 2008/07/14 20:47:34 sincerti Exp $
27// GEANT4 tag $Name: geant4-09-02 $
28
29#include "G4CrossSectionIonisationRudd.hh"
30
31//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32
33G4CrossSectionIonisationRudd::G4CrossSectionIonisationRudd()
34{
35 lowEnergyLimitDefault = 0 * eV;
36 highEnergyLimitDefault = 100 * MeV;
37
38 G4String fileProton("dna/sigma_ionisation_p_rudd");
39 G4String fileHydrogen("dna/sigma_ionisation_h_rudd");
40 G4String fileAlphaPlusPlus("dna/sigma_ionisation_alphaplusplus_rudd");
41 G4String fileAlphaPlus("dna/sigma_ionisation_alphaplus_rudd");
42 G4String fileHelium("dna/sigma_ionisation_he_rudd");
43
44 G4DNAGenericIonsManager *instance;
45 instance = G4DNAGenericIonsManager::Instance();
46 G4ParticleDefinition* protonDef = G4Proton::ProtonDefinition();
47 G4ParticleDefinition* hydrogenDef = instance->GetIon("hydrogen");
48 G4ParticleDefinition* alphaPlusPlusDef = instance->GetIon("alpha++");
49 G4ParticleDefinition* alphaPlusDef = instance->GetIon("alpha+");
50 G4ParticleDefinition* heliumDef = instance->GetIon("helium");
51
52 G4String proton;
53 G4String hydrogen;
54 G4String alphaPlusPlus;
55 G4String alphaPlus;
56 G4String helium;
57
58 G4double scaleFactor = 1 * m*m;
59
60 if (protonDef != 0)
61 {
62 proton = protonDef->GetParticleName();
63 tableFile[proton] = fileProton;
64
65 lowEnergyLimit[proton] = 0. * eV;
66 highEnergyLimit[proton] = 500. * keV;
67
68 G4DNACrossSectionDataSet* tableProton = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
69 eV,
70 scaleFactor );
71 tableProton->LoadData(fileProton);
72 tableData[proton] = tableProton;
73 }
74 else
75 {
76 G4Exception("G4CrossSectionIonisationRudd Constructor: proton is not defined");
77 }
78
79 if (hydrogenDef != 0)
80 {
81 hydrogen = hydrogenDef->GetParticleName();
82 tableFile[hydrogen] = fileHydrogen;
83
84 lowEnergyLimit[hydrogen] = 0. * eV;
85 highEnergyLimit[hydrogen] = 100. * MeV;
86
87 G4DNACrossSectionDataSet* tableHydrogen = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
88 eV,
89 scaleFactor );
90 tableHydrogen->LoadData(fileHydrogen);
91
92 tableData[hydrogen] = tableHydrogen;
93 }
94 else
95 {
96 G4Exception("G4CrossSectionIonisationRudd Constructor: hydrogen is not defined");
97 }
98
99 if (alphaPlusPlusDef != 0)
100 {
101 alphaPlusPlus = alphaPlusPlusDef->GetParticleName();
102 tableFile[alphaPlusPlus] = fileAlphaPlusPlus;
103
104 lowEnergyLimit[alphaPlusPlus] = 0. * eV;
105 highEnergyLimit[alphaPlusPlus] = 10. * MeV;
106
107 G4DNACrossSectionDataSet* tableAlphaPlusPlus = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
108 eV,
109 scaleFactor );
110 tableAlphaPlusPlus->LoadData(fileAlphaPlusPlus);
111
112 tableData[alphaPlusPlus] = tableAlphaPlusPlus;
113 }
114 else
115 {
116 G4Exception("G4CrossSectionIonisationRudd Constructor: alphaPlusPlus is not defined");
117 }
118
119 if (alphaPlusDef != 0)
120 {
121 alphaPlus = alphaPlusDef->GetParticleName();
122 tableFile[alphaPlus] = fileAlphaPlus;
123
124 lowEnergyLimit[alphaPlus] = 0. * eV;
125 highEnergyLimit[alphaPlus] = 10. * MeV;
126
127 G4DNACrossSectionDataSet* tableAlphaPlus = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
128 eV,
129 scaleFactor );
130 tableAlphaPlus->LoadData(fileAlphaPlus);
131 tableData[alphaPlus] = tableAlphaPlus;
132 }
133 else
134 {
135 G4Exception("G4CrossSectionIonisationRudd Constructor: alphaPlus is not defined");
136 }
137
138 if (heliumDef != 0)
139 {
140 helium = heliumDef->GetParticleName();
141 tableFile[helium] = fileHelium;
142
143 lowEnergyLimit[helium] = 0. * eV;
144 highEnergyLimit[helium] = 10. * MeV;
145
146 G4DNACrossSectionDataSet* tableHelium = new G4DNACrossSectionDataSet(new G4LogLogInterpolation,
147 eV,
148 scaleFactor );
149 tableHelium->LoadData(fileHelium);
150 tableData[helium] = tableHelium;
151 }
152 else
153 {
154 G4Exception("G4CrossSectionIonisationRudd Constructor: helium is not defined");
155 }
156}
157
158//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
159
160G4CrossSectionIonisationRudd::~G4CrossSectionIonisationRudd()
161{
162 std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos;
163 for (pos = tableData.begin(); pos != tableData.end(); ++pos)
164 {
165 G4DNACrossSectionDataSet* table = pos->second;
166 delete table;
167 }
168}
169
170//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
171
172G4double G4CrossSectionIonisationRudd::CrossSection(const G4Track& track )
173{
174 const G4DynamicParticle* particle = track.GetDynamicParticle();
175 G4double k = particle->GetKineticEnergy();
176
177 G4DNAGenericIonsManager *instance;
178 instance = G4DNAGenericIonsManager::Instance();
179
180 if (
181 track.GetDefinition() != G4Proton::ProtonDefinition()
182 &&
183 track.GetDefinition() != instance->GetIon("hydrogen")
184 &&
185 track.GetDefinition() != instance->GetIon("alpha++")
186 &&
187 track.GetDefinition() != instance->GetIon("alpha+")
188 &&
189 track.GetDefinition() != instance->GetIon("helium")
190 )
191
192 G4Exception("G4CrossSectionIonisationRudd: attempting to calculate cross section for wrong particle");
193
194 G4double sigma = 0.;
195
196 G4double lowLim = lowEnergyLimitDefault;
197 G4double highLim = highEnergyLimitDefault;
198
199 const G4String& particleName = particle->GetDefinition()->GetParticleName();
200
201 std::map< G4String,G4double,std::less<G4String> >::iterator pos1;
202 pos1 = lowEnergyLimit.find(particleName);
203
204 if (pos1 != lowEnergyLimit.end())
205 {
206 lowLim = pos1->second;
207 }
208
209 std::map< G4String,G4double,std::less<G4String> >::iterator pos2;
210 pos2 = highEnergyLimit.find(particleName);
211
212 if (pos2 != highEnergyLimit.end())
213 {
214 highLim = pos2->second;
215 }
216
217 if (k >= lowLim && k <= highLim)
218 {
219 std::map< G4String,G4DNACrossSectionDataSet*,std::less<G4String> >::iterator pos;
220 pos = tableData.find(particleName);
221
222 if (pos != tableData.end())
223 {
224 G4DNACrossSectionDataSet* table = pos->second;
225 if (table != 0)
226 {
227 sigma = table->FindValue(k);
228
229 // BEGIN ELECTRON CORRECTION
230 // add ONE or TWO electron-water excitation for alpha+ and helium
231
232 if ( particle->GetDefinition() == instance->GetIon("alpha+")
233 ||
234 particle->GetDefinition() == instance->GetIon("helium")
235 )
236 {
237
238 G4DNACrossSectionDataSet* electronDataset = new G4DNACrossSectionDataSet
239 (new G4LogLogInterpolation, eV, (1./3.343e22)*m*m);
240
241 electronDataset->LoadData("dna/sigma_ionisation_e_born");
242
243 G4double kElectron = k * 0.511/3728;
244
245 if ( particle->GetDefinition() == instance->GetIon("alpha+") )
246 {
247 G4double tmp1 = table->FindValue(k) + electronDataset->FindValue(kElectron);
248 delete electronDataset;
249 return tmp1;
250 }
251
252 if ( particle->GetDefinition() == instance->GetIon("helium") )
253 {
254 G4double tmp2 = table->FindValue(k) + 2. * electronDataset->FindValue(kElectron);
255 delete electronDataset;
256 return tmp2;
257 }
258 }
259
260 // END ELECTRON CORRECTION
261 }
262 }
263 else
264 {
265 G4Exception("G4CrossSectionIonisationRudd: attempting to calculate cross section for wrong particle");
266 }
267 }
268
269 return sigma;
270}
271
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