G4DNADingfelderChargeIncreaseModel Class Reference

#include <G4DNADingfelderChargeIncreaseModel.hh>

Inheritance diagram for G4DNADingfelderChargeIncreaseModel:

G4VEmModel

Public Member Functions

 G4DNADingfelderChargeIncreaseModel (const G4ParticleDefinition *p=0, const G4String &nam="DNADingfelderChargeIncreaseModel")
virtual ~G4DNADingfelderChargeIncreaseModel ()
virtual void Initialise (const G4ParticleDefinition *, const G4DataVector &)
virtual G4double CrossSectionPerVolume (const G4Material *material, const G4ParticleDefinition *p, G4double ekin, G4double emin, G4double emax)
virtual void SampleSecondaries (std::vector< G4DynamicParticle * > *, const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmin, G4double maxEnergy)

Protected Attributes

G4ParticleChangeForGamma * fParticleChangeForGamma

Detailed Description

Definition at line 41 of file G4DNADingfelderChargeIncreaseModel.hh.

Constructor & Destructor Documentation

G4DNADingfelderChargeIncreaseModel::G4DNADingfelderChargeIncreaseModel ( const G4ParticleDefinition *  p = 0,
const G4String &  nam = "DNADingfelderChargeIncreaseModel" 
)

Definition at line 40 of file G4DNADingfelderChargeIncreaseModel.cc.

References fParticleChangeForGamma, G4cout, and G4endl.

00042     :G4VEmModel(nam),isInitialised(false)
00043 {
00044     //  nistwater = G4NistManager::Instance()->FindOrBuildMaterial("G4_WATER");
00045     fpMolWaterDensity = 0;
00046 
00047     numberOfPartialCrossSections[0]=0;
00048     numberOfPartialCrossSections[1]=0;
00049 
00050     verboseLevel= 0;
00051     // Verbosity scale:
00052     // 0 = nothing
00053     // 1 = warning for energy non-conservation
00054     // 2 = details of energy budget
00055     // 3 = calculation of cross sections, file openings, sampling of atoms
00056     // 4 = entering in methods
00057 
00058     if( verboseLevel>0 )
00059     {
00060         G4cout << "Dingfelder charge increase model is constructed " << G4endl;
00061     }
00062     fParticleChangeForGamma = 0;
00063 }

G4DNADingfelderChargeIncreaseModel::~G4DNADingfelderChargeIncreaseModel (  )  [virtual]

Definition at line 67 of file G4DNADingfelderChargeIncreaseModel.cc.

00068 {}

Member Function Documentation

G4double G4DNADingfelderChargeIncreaseModel::CrossSectionPerVolume ( const G4Material *  material,
const G4ParticleDefinition *  p,
G4double  ekin,
G4double  emin,
G4double  emax 
) [virtual]

Reimplemented from G4VEmModel.

Definition at line 190 of file G4DNADingfelderChargeIncreaseModel.cc.

References G4cout, G4endl, G4Material::GetIndex(), G4DNAGenericIonsManager::GetIon(), G4ParticleDefinition::GetParticleName(), G4DNAGenericIonsManager::Instance(), and G4INCL::Math::pi.

00195 {
00196     if (verboseLevel > 3)
00197         G4cout << "Calling CrossSectionPerVolume() of G4DNADingfelderChargeIncreaseModel" << G4endl;
00198 
00199     // Calculate total cross section for model
00200 
00201     G4DNAGenericIonsManager *instance;
00202     instance = G4DNAGenericIonsManager::Instance();
00203 
00204     if (
00205             particleDefinition != instance->GetIon("hydrogen")
00206             &&
00207             particleDefinition != instance->GetIon("alpha+")
00208             &&
00209             particleDefinition != instance->GetIon("helium")
00210             )
00211 
00212         return 0;
00213 
00214     G4double lowLim = 0;
00215     G4double highLim = 0;
00216     G4double totalCrossSection = 0.;
00217 
00218     G4double waterDensity = (*fpMolWaterDensity)[material->GetIndex()];
00219 
00220     if(waterDensity!= 0.0)
00221   //  if (material == nistwater || material->GetBaseMaterial() == nistwater)
00222     {
00223         const G4String& particleName = particleDefinition->GetParticleName();
00224 
00225         std::map< G4String,G4double,std::less<G4String> >::iterator pos1;
00226         pos1 = lowEnergyLimit.find(particleName);
00227 
00228         if (pos1 != lowEnergyLimit.end())
00229         {
00230             lowLim = pos1->second;
00231         }
00232 
00233         std::map< G4String,G4double,std::less<G4String> >::iterator pos2;
00234         pos2 = highEnergyLimit.find(particleName);
00235 
00236         if (pos2 != highEnergyLimit.end())
00237         {
00238             highLim = pos2->second;
00239         }
00240 
00241         if (k >= lowLim && k < highLim)
00242         {
00243             //HYDROGEN
00244             if (particleDefinition == instance->GetIon("hydrogen"))
00245             {
00246                 const  G4double aa = 2.835;
00247                 const  G4double bb = 0.310;
00248                 const  G4double cc = 2.100;
00249                 const  G4double dd = 0.760;
00250                 const  G4double fac = 1.0e-18;
00251                 const  G4double rr = 13.606 * eV;
00252 
00253                 G4double t = k / (proton_mass_c2/electron_mass_c2);
00254                 G4double x = t / rr;
00255                 G4double temp = 4.0 * pi * Bohr_radius/nm * Bohr_radius/nm * fac;
00256                 G4double sigmal =  temp * cc * (std::pow(x,dd));
00257                 G4double sigmah = temp * (aa * std::log(1.0 + x) + bb) / x;
00258                 totalCrossSection = 1.0/(1.0/sigmal + 1.0/sigmah) *m*m;
00259             }
00260             else
00261             {
00262                 totalCrossSection = Sum(k,particleDefinition);
00263             }
00264         }
00265 
00266         if (verboseLevel > 2)
00267         {            
00268             G4cout << "__________________________________" << G4endl;
00269             G4cout << "°°° G4DNADingfelderChargeIncreaseModel - XS INFO START" << G4endl;
00270             G4cout << "°°° Kinetic energy(eV)=" << k/eV << " particle : " << particleName << G4endl;
00271             G4cout << "°°° Cross section per water molecule (cm^2)=" << totalCrossSection/cm/cm << G4endl;
00272             G4cout << "°°° Cross section per water molecule (cm^-1)=" << totalCrossSection*waterDensity/(1./cm) << G4endl;
00273             //      G4cout << " - Cross section per water molecule (cm^-1)=" << sigma*material->GetAtomicNumDensityVector()[1]/(1./cm) << G4endl;
00274             G4cout << "°°° G4DNADingfelderChargeIncreaseModel - XS INFO END" << G4endl;
00275         }
00276 
00277     }
00278 
00279     return totalCrossSection*waterDensity;
00280 //    return totalCrossSection*material->GetAtomicNumDensityVector()[1];
00281 
00282 }

void G4DNADingfelderChargeIncreaseModel::Initialise ( const G4ParticleDefinition *  ,
const G4DataVector &   
) [virtual]

Implements G4VEmModel.

Definition at line 72 of file G4DNADingfelderChargeIncreaseModel.cc.

References fParticleChangeForGamma, G4cout, G4endl, G4DNAGenericIonsManager::GetIon(), G4Material::GetMaterial(), G4DNAMolecularMaterial::GetNumMolPerVolTableFor(), G4VEmModel::GetParticleChangeForGamma(), G4ParticleDefinition::GetParticleName(), G4VEmModel::HighEnergyLimit(), G4DNAMolecularMaterial::Instance(), G4DNAGenericIonsManager::Instance(), G4VEmModel::LowEnergyLimit(), G4VEmModel::SetHighEnergyLimit(), and G4VEmModel::SetLowEnergyLimit().

00074 {
00075 
00076     if (verboseLevel > 3)
00077         G4cout << "Calling G4DNADingfelderChargeIncreaseModel::Initialise()" << G4endl;
00078 
00079     // Energy limits
00080 
00081     G4DNAGenericIonsManager *instance;
00082     instance = G4DNAGenericIonsManager::Instance();
00083     G4ParticleDefinition* hydrogenDef = instance->GetIon("hydrogen");
00084     G4ParticleDefinition* alphaPlusDef = instance->GetIon("alpha+");
00085     G4ParticleDefinition* heliumDef = instance->GetIon("helium");
00086 
00087     G4String hydrogen;
00088     G4String alphaPlus;
00089     G4String helium;
00090 
00091     // LIMITS
00092 
00093     hydrogen = hydrogenDef->GetParticleName();
00094     lowEnergyLimit[hydrogen] = 100. * eV;
00095     highEnergyLimit[hydrogen] = 100. * MeV;
00096 
00097     alphaPlus = alphaPlusDef->GetParticleName();
00098     lowEnergyLimit[alphaPlus] = 1. * keV;
00099     highEnergyLimit[alphaPlus] = 400. * MeV;
00100 
00101     helium = heliumDef->GetParticleName();
00102     lowEnergyLimit[helium] = 1. * keV;
00103     highEnergyLimit[helium] = 400. * MeV;
00104 
00105     //
00106     
00107     if (particle==hydrogenDef)
00108     {
00109         SetLowEnergyLimit(lowEnergyLimit[hydrogen]);
00110         SetHighEnergyLimit(highEnergyLimit[hydrogen]);
00111     }
00112 
00113     if (particle==alphaPlusDef)
00114     {
00115         SetLowEnergyLimit(lowEnergyLimit[alphaPlus]);
00116         SetHighEnergyLimit(highEnergyLimit[alphaPlus]);
00117     }
00118 
00119     if (particle==heliumDef)
00120     {
00121         SetLowEnergyLimit(lowEnergyLimit[helium]);
00122         SetHighEnergyLimit(highEnergyLimit[helium]);
00123     }
00124 
00125     // Final state
00126 
00127     //ALPHA+
00128 
00129     f0[0][0]=1.;
00130     a0[0][0]=2.25;
00131     a1[0][0]=-0.75;
00132     b0[0][0]=-32.10;
00133     c0[0][0]=0.600;
00134     d0[0][0]=2.40;
00135     x0[0][0]=4.60;
00136 
00137     x1[0][0]=-1.;
00138     b1[0][0]=-1.;
00139 
00140     numberOfPartialCrossSections[0]=1;
00141 
00142     //HELIUM
00143 
00144     f0[0][1]=1.;
00145     a0[0][1]=2.25;
00146     a1[0][1]=-0.75;
00147     b0[0][1]=-30.93;
00148     c0[0][1]=0.590;
00149     d0[0][1]=2.35;
00150     x0[0][1]=4.29;
00151 
00152     f0[1][1]=1.;
00153     a0[1][1]=2.25;
00154     a1[1][1]=-0.75;
00155     b0[1][1]=-32.61;
00156     c0[1][1]=0.435;
00157     d0[1][1]=2.70;
00158     x0[1][1]=4.45;
00159 
00160     x1[0][1]=-1.;
00161     b1[0][1]=-1.;
00162 
00163     x1[1][1]=-1.;
00164     b1[1][1]=-1.;
00165 
00166     numberOfPartialCrossSections[1]=2;
00167 
00168     //
00169 
00170     if( verboseLevel>0 )
00171     {
00172         G4cout << "Dingfelder charge increase model is initialized " << G4endl
00173                << "Energy range: "
00174                << LowEnergyLimit() / keV << " keV - "
00175                << HighEnergyLimit() / MeV << " MeV for "
00176                << particle->GetParticleName()
00177                << G4endl;
00178     }
00179 
00180     // Initialize water density pointer
00181     fpMolWaterDensity = G4DNAMolecularMaterial::Instance()->GetNumMolPerVolTableFor(G4Material::GetMaterial("G4_WATER"));
00182 
00183     if (isInitialised) { return; }
00184     fParticleChangeForGamma = GetParticleChangeForGamma();
00185     isInitialised = true;
00186 }

void G4DNADingfelderChargeIncreaseModel::SampleSecondaries ( std::vector< G4DynamicParticle * > *  ,
const G4MaterialCutsCouple *  ,
const G4DynamicParticle *  ,
G4double  tmin,
G4double  maxEnergy 
) [virtual]

Implements G4VEmModel.

Definition at line 286 of file G4DNADingfelderChargeIncreaseModel.cc.

References G4Electron::Electron(), FatalException, fParticleChangeForGamma, fStopAndKill, G4cout, G4endl, G4Exception(), G4DynamicParticle::GetDefinition(), G4DNAGenericIonsManager::GetIon(), G4DynamicParticle::GetKineticEnergy(), G4DynamicParticle::GetMomentumDirection(), G4ParticleDefinition::GetPDGMass(), G4DNAGenericIonsManager::Instance(), CLHEP::detail::n, G4VParticleChange::ProposeLocalEnergyDeposit(), and G4VParticleChange::ProposeTrackStatus().

00291 {
00292     if (verboseLevel > 3)
00293         G4cout << "Calling SampleSecondaries() of G4DNADingfelderChargeIncreaseModel" << G4endl;
00294 
00295     fParticleChangeForGamma->ProposeTrackStatus(fStopAndKill);
00296     fParticleChangeForGamma->ProposeLocalEnergyDeposit(0.);
00297 
00298     G4ParticleDefinition* definition = aDynamicParticle->GetDefinition();
00299 
00300     G4double particleMass = definition->GetPDGMass();
00301 
00302     G4double inK = aDynamicParticle->GetKineticEnergy();
00303 
00304     G4int finalStateIndex = RandomSelect(inK,definition);
00305 
00306     G4int n = NumberOfFinalStates(definition,finalStateIndex);
00307 
00308     G4double outK = inK - IncomingParticleBindingEnergyConstant(definition,finalStateIndex);
00309 
00310     G4DNAGenericIonsManager* instance;
00311     instance = G4DNAGenericIonsManager::Instance();
00312 
00313     G4double electronK;
00314     if (definition == instance->GetIon("hydrogen")) electronK = inK*electron_mass_c2/proton_mass_c2;
00315     else electronK = inK*electron_mass_c2/(particleMass);
00316 
00317     if (outK<0)
00318     {
00319         G4Exception("G4DNADingfelderChargeIncreaseModel::SampleSecondaries","em0004",
00320                     FatalException,"Final kinetic energy is negative.");
00321     }
00322 
00323     G4DynamicParticle* dp = new G4DynamicParticle
00324 
00325             (OutgoingParticleDefinition(definition,finalStateIndex),
00326              aDynamicParticle->GetMomentumDirection(),
00327              outK) ;
00328 
00329     fvect->push_back(dp);
00330 
00331     n = n - 1;
00332 
00333     while (n>0)
00334     {
00335         n--;
00336         fvect->push_back(new G4DynamicParticle
00337                          (G4Electron::Electron(), aDynamicParticle->GetMomentumDirection(), electronK) );
00338     }
00339 
00340 }

Field Documentation

G4ParticleChangeForGamma* G4DNADingfelderChargeIncreaseModel::fParticleChangeForGamma [protected]

Definition at line 67 of file G4DNADingfelderChargeIncreaseModel.hh.

Referenced by G4DNADingfelderChargeIncreaseModel(), Initialise(), and SampleSecondaries().

The documentation for this class was generated from the following files:
Generated on Mon May 27 17:51:47 2013 for Geant4 by  doxygen 1.4.7