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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // >> 26 // $Id: G4PAIPhotModel.cc 73607 2013-09-02 10:04:03Z gcosmo $ 26 // 27 // 27 // ------------------------------------------- 28 // ------------------------------------------------------------------- 28 // 29 // 29 // GEANT4 Class 30 // GEANT4 Class 30 // File name: G4PAIPhotModel.cc 31 // File name: G4PAIPhotModel.cc 31 // 32 // 32 // Author: Vladimir.Grichine@cern.ch on base o 33 // Author: Vladimir.Grichine@cern.ch on base of G4PAIModel MT interface 33 // 34 // 34 // Creation date: 07.10.2013 35 // Creation date: 07.10.2013 35 // 36 // 36 // Modifications: 37 // Modifications: 37 // 38 // 38 // 39 // 39 40 40 #include "G4PAIPhotModel.hh" 41 #include "G4PAIPhotModel.hh" 41 42 42 #include "G4SystemOfUnits.hh" 43 #include "G4SystemOfUnits.hh" 43 #include "G4PhysicalConstants.hh" 44 #include "G4PhysicalConstants.hh" 44 #include "G4Region.hh" 45 #include "G4Region.hh" >> 46 #include "G4PhysicsLogVector.hh" >> 47 #include "G4PhysicsFreeVector.hh" >> 48 #include "G4PhysicsTable.hh" 45 #include "G4ProductionCutsTable.hh" 49 #include "G4ProductionCutsTable.hh" 46 #include "G4MaterialCutsCouple.hh" 50 #include "G4MaterialCutsCouple.hh" 47 #include "G4MaterialTable.hh" 51 #include "G4MaterialTable.hh" 48 #include "G4RegionStore.hh" << 52 #include "G4SandiaTable.hh" >> 53 #include "G4OrderedTable.hh" 49 54 50 #include "Randomize.hh" 55 #include "Randomize.hh" 51 #include "G4Electron.hh" 56 #include "G4Electron.hh" 52 #include "G4Positron.hh" 57 #include "G4Positron.hh" 53 #include "G4Gamma.hh" 58 #include "G4Gamma.hh" 54 #include "G4Poisson.hh" 59 #include "G4Poisson.hh" 55 #include "G4Step.hh" 60 #include "G4Step.hh" 56 #include "G4Material.hh" 61 #include "G4Material.hh" 57 #include "G4DynamicParticle.hh" 62 #include "G4DynamicParticle.hh" 58 #include "G4ParticleDefinition.hh" 63 #include "G4ParticleDefinition.hh" 59 #include "G4ParticleChangeForLoss.hh" 64 #include "G4ParticleChangeForLoss.hh" 60 #include "G4PAIPhotData.hh" 65 #include "G4PAIPhotData.hh" 61 #include "G4DeltaAngle.hh" 66 #include "G4DeltaAngle.hh" 62 67 63 ////////////////////////////////////////////// 68 //////////////////////////////////////////////////////////////////////// 64 69 65 using namespace std; 70 using namespace std; 66 71 67 G4PAIPhotModel::G4PAIPhotModel(const G4Particl 72 G4PAIPhotModel::G4PAIPhotModel(const G4ParticleDefinition* p, const G4String& nam) 68 : G4VEmModel(nam),G4VEmFluctuationModel(nam) 73 : G4VEmModel(nam),G4VEmFluctuationModel(nam), 69 fVerbose(0), 74 fVerbose(0), 70 fModelData(nullptr), << 75 fModelData(0), 71 fParticle(nullptr) << 76 fParticle(0) 72 { 77 { 73 fElectron = G4Electron::Electron(); 78 fElectron = G4Electron::Electron(); 74 fPositron = G4Positron::Positron(); 79 fPositron = G4Positron::Positron(); 75 80 76 fParticleChange = nullptr; << 81 fParticleChange = 0; 77 82 78 if(p) { SetParticle(p); } 83 if(p) { SetParticle(p); } 79 else { SetParticle(fElectron); } 84 else { SetParticle(fElectron); } 80 85 81 // default generator 86 // default generator 82 SetAngularDistribution(new G4DeltaAngle()); 87 SetAngularDistribution(new G4DeltaAngle()); 83 fLowestTcut = 12.5*CLHEP::eV; << 88 >> 89 isInitialised = false; 84 } 90 } 85 91 86 ////////////////////////////////////////////// 92 //////////////////////////////////////////////////////////////////////////// 87 93 88 G4PAIPhotModel::~G4PAIPhotModel() 94 G4PAIPhotModel::~G4PAIPhotModel() 89 { 95 { 90 if(IsMaster()) { delete fModelData; fModelDa << 96 if(IsMaster()) { delete fModelData; } 91 } 97 } 92 98 93 ////////////////////////////////////////////// 99 //////////////////////////////////////////////////////////////////////////// 94 100 95 void G4PAIPhotModel::Initialise(const G4Partic 101 void G4PAIPhotModel::Initialise(const G4ParticleDefinition* p, 96 const G4DataVector& cuts) << 102 const G4DataVector& cuts) 97 { 103 { 98 if(fVerbose > 1) << 104 // if(fVerbose > 0) 99 { 105 { 100 G4cout<<"G4PAIPhotModel::Initialise for "< 106 G4cout<<"G4PAIPhotModel::Initialise for "<<p->GetParticleName()<<G4endl; 101 } 107 } >> 108 >> 109 if(isInitialised) { return; } >> 110 isInitialised = true; >> 111 102 SetParticle(p); 112 SetParticle(p); 103 fParticleChange = GetParticleChangeForLoss() 113 fParticleChange = GetParticleChangeForLoss(); 104 114 105 if( IsMaster() ) << 115 if(IsMaster()) { 106 { << 116 107 delete fModelData; << 117 InitialiseElementSelectors(p, cuts); 108 fMaterialCutsCoupleVector.clear(); << 118 109 << 119 if(!fModelData) { 110 G4double tmin = LowEnergyLimit()*fRatio; << 120 111 G4double tmax = HighEnergyLimit()*fRatio; << 121 G4double tmin = LowEnergyLimit()*fRatio; 112 fModelData = new G4PAIPhotData(tmin, tmax, << 122 G4double tmax = HighEnergyLimit()*fRatio; 113 << 123 fModelData = new G4PAIPhotData(tmin, tmax, fVerbose); >> 124 } 114 // Prepare initialization 125 // Prepare initialization 115 const G4MaterialTable* theMaterialTable = 126 const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable(); 116 size_t numOfMat = G4Material::GetNumberO 127 size_t numOfMat = G4Material::GetNumberOfMaterials(); 117 size_t numRegions = fPAIRegionVector.size( 128 size_t numRegions = fPAIRegionVector.size(); 118 129 119 // protect for unit tests << 130 for(size_t iReg = 0; iReg < numRegions; ++iReg) { 120 if(0 == numRegions) { << 121 G4Exception("G4PAIModel::Initialise()"," << 122 "no G4Regions are registered << 123 fPAIRegionVector.push_back(G4RegionStore << 124 ->GetRegion("DefaultRegionForTheWorld << 125 numRegions = 1; << 126 } << 127 << 128 for( size_t iReg = 0; iReg < numRegions; + << 129 { << 130 const G4Region* curReg = fPAIRegionVecto 131 const G4Region* curReg = fPAIRegionVector[iReg]; 131 G4Region* reg = const_cast<G4Region*>(cu 132 G4Region* reg = const_cast<G4Region*>(curReg); 132 133 133 for(size_t jMat = 0; jMat < numOfMat; ++ << 134 for(size_t jMat = 0; jMat < numOfMat; ++jMat) { 134 { << 135 G4Material* mat = (*theMaterialTable)[jMat]; 135 G4Material* mat = (*theMaterialTable)[jMat]; 136 const G4MaterialCutsCouple* cutCouple = reg- 136 const G4MaterialCutsCouple* cutCouple = reg->FindCouple(mat); 137 if(nullptr != cutCouple) << 137 //G4cout << "Couple <" << fCutCouple << G4endl; 138 { << 138 if(cutCouple) { 139 if(fVerbose > 1) << 139 /* 140 { << 141 G4cout << "Reg <" <<curReg->GetName() << 140 G4cout << "Reg <" <<curReg->GetName() << "> mat <" 142 << mat->GetName() << "> fCouple= " << 141 << fMaterial->GetName() << "> fCouple= " 143 << cutCouple << ", idx= " << cutCouple-> << 142 << fCutCouple << " idx= " << fCutCouple->GetIndex() 144 <<" " << p->GetParticleName() << 143 <<" " << p->GetParticleName() <<G4endl; 145 <<", cuts.size() = " << cuts.size() << G << 144 // G4cout << cuts.size() << G4endl; 146 } << 145 */ 147 // check if this couple is not already ini 146 // check if this couple is not already initialized 148 << 149 size_t n = fMaterialCutsCoupleVector.size( 147 size_t n = fMaterialCutsCoupleVector.size(); 150 << 148 if(0 < n) { 151 G4bool isnew = true; << 149 for(size_t i=0; i<fMaterialCutsCoupleVector.size(); ++i) { 152 if( 0 < n ) << 153 { << 154 for(size_t i=0; i<fMaterialCutsCoupleVec << 155 { << 156 if(cutCouple == fMaterialCutsCoupleVec 150 if(cutCouple == fMaterialCutsCoupleVector[i]) { 157 isnew = false; << 158 break; 151 break; 159 } 152 } 160 } 153 } 161 } 154 } 162 // initialise data banks 155 // initialise data banks 163 if(isnew) { << 156 fMaterialCutsCoupleVector.push_back(cutCouple); 164 fMaterialCutsCoupleVector.push_back(cutC << 157 G4double deltaCutInKinEnergy = cuts[cutCouple->GetIndex()]; 165 G4double deltaCutInKinEnergy = cuts[cutC << 158 fModelData->Initialise(cutCouple, deltaCutInKinEnergy, this); 166 fModelData->Initialise(cutCouple, deltaC << 167 } << 168 } 159 } 169 } 160 } 170 } 161 } 171 InitialiseElementSelectors(p, cuts); << 172 } 162 } 173 } 163 } 174 164 175 ////////////////////////////////////////////// 165 ///////////////////////////////////////////////////////////////////////// 176 166 177 void G4PAIPhotModel::InitialiseLocal(const G4P 167 void G4PAIPhotModel::InitialiseLocal(const G4ParticleDefinition*, 178 G4VEmModel* masterModel) 168 G4VEmModel* masterModel) 179 { 169 { 180 fModelData = static_cast<G4PAIPhotModel*>(ma 170 fModelData = static_cast<G4PAIPhotModel*>(masterModel)->GetPAIPhotData(); 181 fMaterialCutsCoupleVector = static_cast<G4PA << 171 SetElementSelectors(masterModel->GetElementSelectors()); 182 SetElementSelectors( masterModel->GetElement << 183 } << 184 << 185 ////////////////////////////////////////////// << 186 << 187 G4double G4PAIPhotModel::MinEnergyCut(const G4 << 188 const G4MaterialCutsCouple*) << 189 { << 190 return fLowestTcut; << 191 } 172 } 192 173 193 ////////////////////////////////////////////// 174 ////////////////////////////////////////////////////////////////////////////// 194 175 195 G4double G4PAIPhotModel::ComputeDEDXPerVolume( 176 G4double G4PAIPhotModel::ComputeDEDXPerVolume(const G4Material*, 196 const G4ParticleDefinition* p, 177 const G4ParticleDefinition* p, 197 G4double kineticEnergy, 178 G4double kineticEnergy, 198 G4double cutEnergy) 179 G4double cutEnergy) 199 { 180 { 200 G4int coupleIndex = FindCoupleIndex(CurrentC 181 G4int coupleIndex = FindCoupleIndex(CurrentCouple()); 201 if(0 > coupleIndex) { return 0.0; } 182 if(0 > coupleIndex) { return 0.0; } 202 183 203 G4double cut = std::min(MaxSecondaryEnergy(p 184 G4double cut = std::min(MaxSecondaryEnergy(p, kineticEnergy), cutEnergy); >> 185 204 G4double scaledTkin = kineticEnergy*fRatio; 186 G4double scaledTkin = kineticEnergy*fRatio; 205 G4double dedx = fChargeSquare*fModelData->DE << 187 206 return dedx; << 188 return fChargeSquare*fModelData->DEDXPerVolume(coupleIndex, scaledTkin, cut); 207 } 189 } 208 190 209 ////////////////////////////////////////////// 191 ///////////////////////////////////////////////////////////////////////// 210 192 211 G4double G4PAIPhotModel::CrossSectionPerVolume 193 G4double G4PAIPhotModel::CrossSectionPerVolume( const G4Material*, 212 const G4ParticleDefinition* p, 194 const G4ParticleDefinition* p, 213 G4double kineticEnergy, 195 G4double kineticEnergy, 214 G4double cutEnergy, 196 G4double cutEnergy, 215 G4double maxEnergy ) 197 G4double maxEnergy ) 216 { 198 { 217 G4int coupleIndex = FindCoupleIndex(CurrentC 199 G4int coupleIndex = FindCoupleIndex(CurrentCouple()); 218 if(0 > coupleIndex) { return 0.0; } << 200 >> 201 if(0 > coupleIndex) return 0.0; 219 202 220 G4double tmax = std::min(MaxSecondaryEnergy( 203 G4double tmax = std::min(MaxSecondaryEnergy(p, kineticEnergy), maxEnergy); 221 if(tmax <= cutEnergy) { return 0.0; } << 204 >> 205 if(tmax <= cutEnergy) return 0.0; 222 206 223 G4double scaledTkin = kineticEnergy*fRatio; 207 G4double scaledTkin = kineticEnergy*fRatio; 224 G4double xs = fChargeSquare*fModelData->Cros << 208 G4double xsc = fChargeSquare*fModelData->CrossSectionPerVolume(coupleIndex, 225 scal << 209 scaledTkin, 226 return xs; << 210 cutEnergy, tmax); >> 211 return xsc; 227 } 212 } 228 213 229 ////////////////////////////////////////////// 214 /////////////////////////////////////////////////////////////////////////// 230 // 215 // 231 // It is analog of PostStepDoIt in terms of se 216 // It is analog of PostStepDoIt in terms of secondary electron. 232 // 217 // 233 218 234 void G4PAIPhotModel::SampleSecondaries(std::ve 219 void G4PAIPhotModel::SampleSecondaries(std::vector<G4DynamicParticle*>* vdp, 235 const G4MaterialCutsCouple* matCC, 220 const G4MaterialCutsCouple* matCC, 236 const G4DynamicParticle* dp, 221 const G4DynamicParticle* dp, 237 G4double tmin, 222 G4double tmin, 238 G4double maxEnergy) 223 G4double maxEnergy) 239 { 224 { 240 G4int coupleIndex = FindCoupleIndex(matCC); 225 G4int coupleIndex = FindCoupleIndex(matCC); 241 if(0 > coupleIndex) { return; } 226 if(0 > coupleIndex) { return; } 242 227 243 SetParticle(dp->GetDefinition()); 228 SetParticle(dp->GetDefinition()); 244 229 245 G4double kineticEnergy = dp->GetKineticEnerg 230 G4double kineticEnergy = dp->GetKineticEnergy(); 246 231 247 G4double tmax = MaxSecondaryEnergy(fParticle 232 G4double tmax = MaxSecondaryEnergy(fParticle, kineticEnergy); 248 233 249 if( maxEnergy < tmax) tmax = maxEnergy; 234 if( maxEnergy < tmax) tmax = maxEnergy; 250 if( tmin >= tmax) return; 235 if( tmin >= tmax) return; 251 236 252 G4ThreeVector direction = dp->GetMomentumDir 237 G4ThreeVector direction = dp->GetMomentumDirection(); 253 G4double scaledTkin = kineticEnergy*fRat 238 G4double scaledTkin = kineticEnergy*fRatio; 254 G4double totalEnergy = kineticEnergy + fM 239 G4double totalEnergy = kineticEnergy + fMass; 255 G4double totalMomentum = sqrt(kineticEnergy 240 G4double totalMomentum = sqrt(kineticEnergy*(totalEnergy + fMass)); 256 G4double plRatio = fModelData->GetPla 241 G4double plRatio = fModelData->GetPlasmonRatio(coupleIndex, scaledTkin); 257 242 258 if( G4UniformRand() <= plRatio ) 243 if( G4UniformRand() <= plRatio ) 259 { 244 { 260 G4double deltaTkin = fModelData->SamplePos 245 G4double deltaTkin = fModelData->SamplePostStepPlasmonTransfer(coupleIndex, scaledTkin); 261 246 262 // G4cout<<"G4PAIPhotModel::SampleSecondar 247 // G4cout<<"G4PAIPhotModel::SampleSecondaries; dp "<<dp->GetParticleDefinition()->GetParticleName() 263 // <<"; Tkin = "<<kineticEnergy/keV<<" keV 248 // <<"; Tkin = "<<kineticEnergy/keV<<" keV; transfer = "<<deltaTkin/keV<<" keV "<<G4endl; 264 249 265 if( deltaTkin <= 0. && fVerbose > 0) 250 if( deltaTkin <= 0. && fVerbose > 0) 266 { 251 { 267 G4cout<<"G4PAIPhotModel::SampleSecondary << 252 G4cout<<"G4PAIPhotModel::SampleSecondary e- deltaTkin = "<<deltaTkin<<G4endl; 268 } 253 } 269 if( deltaTkin <= 0.) { return; } << 254 if( deltaTkin <= 0.) return; 270 255 271 if( deltaTkin > tmax) { deltaTkin = tmax; << 256 if( deltaTkin > tmax) deltaTkin = tmax; 272 257 273 const G4Element* anElement = SelectTargetA << 258 const G4Element* anElement = SelectRandomAtom(matCC,fParticle,kineticEnergy); 274 << 259 G4int Z = G4lrint(anElement->GetZ()); 275 G4int Z = anElement->GetZasInt(); << 276 260 277 auto deltaRay = new G4DynamicParticle(fEle << 261 G4DynamicParticle* deltaRay = new G4DynamicParticle(fElectron, 278 GetAngularDistribution()->SampleDirectio 262 GetAngularDistribution()->SampleDirection(dp, deltaTkin, 279 Z, matCC->GetMaterial()), 263 Z, matCC->GetMaterial()), 280 deltaTkin); 264 deltaTkin); 281 265 282 // primary change 266 // primary change 283 267 284 kineticEnergy -= deltaTkin; 268 kineticEnergy -= deltaTkin; 285 269 286 if( kineticEnergy <= 0. ) // kill primary 270 if( kineticEnergy <= 0. ) // kill primary as local? energy deposition 287 { 271 { 288 fParticleChange->SetProposedKineticEnerg 272 fParticleChange->SetProposedKineticEnergy(0.0); 289 fParticleChange->ProposeLocalEnergyDepos 273 fParticleChange->ProposeLocalEnergyDeposit(kineticEnergy+deltaTkin); >> 274 // fParticleChange->ProposeTrackStatus(fStopAndKill); 290 return; 275 return; 291 } 276 } 292 else 277 else 293 { 278 { 294 G4ThreeVector dir = totalMomentum*direct 279 G4ThreeVector dir = totalMomentum*direction - deltaRay->GetMomentum(); 295 direction = dir.unit(); 280 direction = dir.unit(); 296 fParticleChange->SetProposedKineticEnerg 281 fParticleChange->SetProposedKineticEnergy(kineticEnergy); 297 fParticleChange->SetProposedMomentumDire 282 fParticleChange->SetProposedMomentumDirection(direction); 298 vdp->push_back(deltaRay); 283 vdp->push_back(deltaRay); 299 } 284 } 300 } 285 } 301 else // secondary X-ray CR photon 286 else // secondary X-ray CR photon 302 { 287 { 303 G4double deltaTkin = fModelData->Sampl 288 G4double deltaTkin = fModelData->SamplePostStepPhotonTransfer(coupleIndex, scaledTkin); 304 289 305 // G4cout<<"PAIPhotonModel PhotonPostStep 290 // G4cout<<"PAIPhotonModel PhotonPostStepTransfer = "<<deltaTkin/keV<<" keV"<<G4endl; 306 291 307 if( deltaTkin <= 0. ) 292 if( deltaTkin <= 0. ) 308 { 293 { 309 G4cout<<"G4PAIPhotonModel::SampleSeconda 294 G4cout<<"G4PAIPhotonModel::SampleSecondary gamma deltaTkin = "<<deltaTkin<<G4endl; 310 } 295 } 311 if( deltaTkin <= 0.) return; 296 if( deltaTkin <= 0.) return; 312 297 313 if( deltaTkin >= kineticEnergy ) // stop p 298 if( deltaTkin >= kineticEnergy ) // stop primary 314 { 299 { 315 deltaTkin = kineticEnergy; 300 deltaTkin = kineticEnergy; 316 kineticEnergy = 0.0; 301 kineticEnergy = 0.0; 317 } 302 } 318 G4double costheta = 0.; // G4UniformRand() 303 G4double costheta = 0.; // G4UniformRand(); // VG: ??? for start only 319 G4double sintheta = sqrt((1.+costheta)*(1. 304 G4double sintheta = sqrt((1.+costheta)*(1.-costheta)); 320 305 321 // direction of the 'Cherenkov' photon 306 // direction of the 'Cherenkov' photon 322 G4double phi = twopi*G4UniformRand(); 307 G4double phi = twopi*G4UniformRand(); 323 G4double dirx = sintheta*cos(phi), diry = 308 G4double dirx = sintheta*cos(phi), diry = sintheta*sin(phi), dirz = costheta; 324 309 325 G4ThreeVector deltaDirection(dirx,diry,dir 310 G4ThreeVector deltaDirection(dirx,diry,dirz); 326 deltaDirection.rotateUz(direction); 311 deltaDirection.rotateUz(direction); 327 312 328 if( kineticEnergy > 0.) // primary change 313 if( kineticEnergy > 0.) // primary change 329 { 314 { 330 kineticEnergy -= deltaTkin; 315 kineticEnergy -= deltaTkin; 331 fParticleChange->SetProposedKineticEnerg 316 fParticleChange->SetProposedKineticEnergy(kineticEnergy); 332 } 317 } 333 else // stop primary, but pass X-ray CR 318 else // stop primary, but pass X-ray CR 334 { 319 { 335 // fParticleChange->ProposeLocalEnergyDe 320 // fParticleChange->ProposeLocalEnergyDeposit(deltaTkin); 336 fParticleChange->SetProposedKineticEnerg 321 fParticleChange->SetProposedKineticEnergy(0.0); 337 } 322 } 338 // create G4DynamicParticle object for pho 323 // create G4DynamicParticle object for photon ray 339 324 340 auto photonRay = new G4DynamicParticle; << 325 G4DynamicParticle* photonRay = new G4DynamicParticle; 341 photonRay->SetDefinition( G4Gamma::Gamma() 326 photonRay->SetDefinition( G4Gamma::Gamma() ); 342 photonRay->SetKineticEnergy( deltaTkin ); 327 photonRay->SetKineticEnergy( deltaTkin ); 343 photonRay->SetMomentumDirection(deltaDirec 328 photonRay->SetMomentumDirection(deltaDirection); 344 329 345 vdp->push_back(photonRay); 330 vdp->push_back(photonRay); 346 } 331 } 347 return; 332 return; 348 } 333 } 349 334 350 ////////////////////////////////////////////// 335 /////////////////////////////////////////////////////////////////////// 351 336 352 G4double G4PAIPhotModel::SampleFluctuations( << 337 G4double G4PAIPhotModel::SampleFluctuations( const G4MaterialCutsCouple* matCC, 353 const G4MaterialCutsC << 338 const G4DynamicParticle* aParticle, 354 const G4DynamicPartic << 339 G4double, G4double step, 355 const G4double, const << 340 G4double eloss) 356 const G4double step, << 357 { 341 { 358 // return 0.; 342 // return 0.; 359 G4int coupleIndex = FindCoupleIndex(matCC); 343 G4int coupleIndex = FindCoupleIndex(matCC); 360 if(0 > coupleIndex) { return eloss; } 344 if(0 > coupleIndex) { return eloss; } 361 345 362 SetParticle(aParticle->GetDefinition()); 346 SetParticle(aParticle->GetDefinition()); 363 347 >> 348 364 // G4cout << "G4PAIPhotModel::SampleFluctuat 349 // G4cout << "G4PAIPhotModel::SampleFluctuations step(mm)= "<< step/mm 365 // << " Eloss(keV)= " << eloss/keV << " in 350 // << " Eloss(keV)= " << eloss/keV << " in " 366 // << matCC->GetMaterial()->GetName() << G4e 351 // << matCC->GetMaterial()->GetName() << G4endl; >> 352 367 353 368 G4double Tkin = aParticle->GetKineticE 354 G4double Tkin = aParticle->GetKineticEnergy(); 369 G4double scaledTkin = Tkin*fRatio; 355 G4double scaledTkin = Tkin*fRatio; 370 356 371 G4double loss = fModelData->SampleAlongStepP 357 G4double loss = fModelData->SampleAlongStepPhotonTransfer(coupleIndex, Tkin, 372 scaledTkin, << 358 scaledTkin, 373 step*fChargeSquare); << 359 step*fChargeSquare); 374 loss += fModelData->SampleAlongStepPlasmonTr << 360 loss += fModelData->SampleAlongStepPlasmonTransfer(coupleIndex, Tkin, 375 << 361 scaledTkin, >> 362 step*fChargeSquare); >> 363 376 364 377 // G4cout<<" PAIPhotModel::SampleFluctuatio 365 // G4cout<<" PAIPhotModel::SampleFluctuations loss = "<<loss/keV<<" keV, on step = " 378 // <<step/mm<<" mm"<<G4endl; 366 // <<step/mm<<" mm"<<G4endl; 379 return loss; 367 return loss; 380 368 381 } 369 } 382 370 383 ////////////////////////////////////////////// 371 ////////////////////////////////////////////////////////////////////// 384 // 372 // 385 // Returns the statistical estimation of the e 373 // Returns the statistical estimation of the energy loss distribution variance 386 // 374 // 387 375 388 376 389 G4double G4PAIPhotModel::Dispersion(const G4Ma << 377 G4double G4PAIPhotModel::Dispersion( const G4Material* material, 390 const G4Dy << 378 const G4DynamicParticle* aParticle, 391 const G4double tcut, << 379 G4double tmax, 392 const G4double tmax, << 380 G4double step ) 393 const G4double step) << 394 { 381 { 395 G4double particleMass = aParticle->GetMass( 382 G4double particleMass = aParticle->GetMass(); 396 G4double electronDensity = material->GetElec 383 G4double electronDensity = material->GetElectronDensity(); 397 G4double kineticEnergy = aParticle->GetKinet 384 G4double kineticEnergy = aParticle->GetKineticEnergy(); 398 G4double q = aParticle->GetCharge()/eplus; 385 G4double q = aParticle->GetCharge()/eplus; 399 G4double etot = kineticEnergy + particleMass 386 G4double etot = kineticEnergy + particleMass; 400 G4double beta2 = kineticEnergy*(kineticEnerg 387 G4double beta2 = kineticEnergy*(kineticEnergy + 2.0*particleMass)/(etot*etot); 401 G4double siga = (tmax/beta2 - 0.5*tcut) * t << 388 G4double siga = (1.0/beta2 - 0.5) * twopi_mc2_rcl2 * tmax * step 402 * electronDensity * q * q; 389 * electronDensity * q * q; 403 390 404 return siga; 391 return siga; >> 392 /* >> 393 G4double loss, sumLoss=0., sumLoss2=0., sigma2, meanLoss=0.; >> 394 for(G4int i = 0; i < fMeanNumber; i++) >> 395 { >> 396 loss = SampleFluctuations(material,aParticle,tmax,step,meanLoss); >> 397 sumLoss += loss; >> 398 sumLoss2 += loss*loss; >> 399 } >> 400 meanLoss = sumLoss/fMeanNumber; >> 401 sigma2 = meanLoss*meanLoss + (sumLoss2-2*sumLoss*meanLoss)/fMeanNumber; >> 402 return sigma2; >> 403 */ 405 } 404 } 406 405 407 ////////////////////////////////////////////// 406 ///////////////////////////////////////////////////////////////////// 408 407 409 G4double G4PAIPhotModel::MaxSecondaryEnergy( c 408 G4double G4PAIPhotModel::MaxSecondaryEnergy( const G4ParticleDefinition* p, 410 G4double kinEnergy) 409 G4double kinEnergy) 411 { 410 { 412 SetParticle(p); 411 SetParticle(p); 413 G4double tmax = kinEnergy; 412 G4double tmax = kinEnergy; 414 if(p == fElectron) { tmax *= 0.5; } 413 if(p == fElectron) { tmax *= 0.5; } 415 else if(p != fPositron) { 414 else if(p != fPositron) { 416 G4double ratio= electron_mass_c2/fMass; 415 G4double ratio= electron_mass_c2/fMass; 417 G4double gamma= kinEnergy/fMass + 1.0; 416 G4double gamma= kinEnergy/fMass + 1.0; 418 tmax = 2.0*electron_mass_c2*(gamma*gamma - 417 tmax = 2.0*electron_mass_c2*(gamma*gamma - 1.) / 419 (1. + 2.0*gamma*ratio + rati 418 (1. + 2.0*gamma*ratio + ratio*ratio); 420 } 419 } 421 return tmax; 420 return tmax; 422 } 421 } 423 422 424 ////////////////////////////////////////////// 423 /////////////////////////////////////////////////////////////// 425 424 426 void G4PAIPhotModel::DefineForRegion(const G4R 425 void G4PAIPhotModel::DefineForRegion(const G4Region* r) 427 { 426 { 428 fPAIRegionVector.push_back(r); 427 fPAIRegionVector.push_back(r); 429 } 428 } 430 429 431 // 430 // 432 // 431 // 433 ////////////////////////////////////////////// 432 ///////////////////////////////////////////////// 434 433