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Geant4/processes/electromagnetic/standard/src/G4DeltaAngle.cc

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Differences between /processes/electromagnetic/standard/src/G4DeltaAngle.cc (Version 11.3.0) and /processes/electromagnetic/standard/src/G4DeltaAngle.cc (Version 10.3.p2)


  1 //                                                  1 //
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 25 //                                                 25 //
                                                   >>  26 // $Id: G4DeltaAngle.cc 68380 2013-03-22 18:39:29Z vnivanch $
 26 //                                                 27 //
 27 // -------------------------------------------     28 // -------------------------------------------------------------------
 28 //                                                 29 //
 29 // GEANT4 Class file                               30 // GEANT4 Class file
 30 //                                                 31 //
 31 //                                                 32 //
 32 // File name:     G4DeltaAngle                     33 // File name:     G4DeltaAngle
 33 //                                                 34 //
 34 // Author:        Vladimir Ivantcheko              35 // Author:        Vladimir Ivantcheko
 35 //                                                 36 // 
 36 // Creation date: 23 August 2013                   37 // Creation date: 23 August 2013
 37 //                                                 38 //
 38 // Modifications:                                  39 // Modifications: 
 39 //                                                 40 //
 40 // Class Description:                              41 // Class Description: 
 41 //                                                 42 //
 42 // Delta-electron Angular Distribution Generat     43 // Delta-electron Angular Distribution Generation 
 43 //                                                 44 //
 44 // Class Description: End                          45 // Class Description: End 
 45 //                                                 46 //
 46 // -------------------------------------------     47 // -------------------------------------------------------------------
 47 //                                                 48 //
 48                                                    49 
 49 #include "G4DeltaAngle.hh"                         50 #include "G4DeltaAngle.hh"
 50 #include "G4PhysicalConstants.hh"                  51 #include "G4PhysicalConstants.hh"
 51 #include "Randomize.hh"                            52 #include "Randomize.hh"
 52 #include "G4ParticleDefinition.hh"                 53 #include "G4ParticleDefinition.hh"
 53 #include "G4Electron.hh"                           54 #include "G4Electron.hh"
 54 #include "G4AtomicShells.hh"                       55 #include "G4AtomicShells.hh"
 55 #include "G4SystemOfUnits.hh"                      56 #include "G4SystemOfUnits.hh"
 56 #include "G4Log.hh"                                57 #include "G4Log.hh"
 57                                                    58 
 58 using namespace std;                               59 using namespace std;
 59                                                    60 
 60 G4DeltaAngle::G4DeltaAngle(const G4String&)        61 G4DeltaAngle::G4DeltaAngle(const G4String&)
 61   : G4VEmAngularDistribution("deltaVI")            62   : G4VEmAngularDistribution("deltaVI")
 62 {                                                  63 {
 63   fElectron = G4Electron::Electron();              64   fElectron = G4Electron::Electron();
 64   nprob = 26;                                      65   nprob = 26;
 65   fShellIdx = -1;                              << 
 66   prob.resize(nprob,0.0);                          66   prob.resize(nprob,0.0);
                                                   >>  67   fShellIdx = -1;
 67 }                                                  68 }    
 68                                                    69 
 69 G4DeltaAngle::~G4DeltaAngle() = default;       <<  70 G4DeltaAngle::~G4DeltaAngle() 
                                                   >>  71 {}
 70                                                    72 
 71 G4ThreeVector&                                     73 G4ThreeVector& 
 72 G4DeltaAngle::SampleDirectionForShell(const G4     74 G4DeltaAngle::SampleDirectionForShell(const G4DynamicParticle* dp,
 73                               G4double kinEner     75                               G4double kinEnergyFinal, G4int Z, G4int idx, 
 74                               const G4Material     76                               const G4Material* mat)
 75 {                                                  77 {
 76   fShellIdx = idx;                                 78   fShellIdx = idx;
 77   return SampleDirection(dp, kinEnergyFinal,Z,     79   return SampleDirection(dp, kinEnergyFinal,Z, mat);
 78 }                                                  80 }
 79                                                    81 
 80 G4ThreeVector&                                     82 G4ThreeVector& 
 81 G4DeltaAngle::SampleDirection(const G4DynamicP     83 G4DeltaAngle::SampleDirection(const G4DynamicParticle* dp,
 82                               G4double kinEner     84                               G4double kinEnergyFinal, G4int Z, 
 83                               const G4Material     85                               const G4Material*)
 84 {                                                  86 {
 85   G4int nShells = G4AtomicShells::GetNumberOfS     87   G4int nShells = G4AtomicShells::GetNumberOfShells(Z);
 86   G4int idx = fShellIdx;                           88   G4int idx = fShellIdx;
 87                                                    89 
 88   // if idx is not properly defined sample she     90   // if idx is not properly defined sample shell index
 89   if(idx < 0 || idx >= nShells) {                  91   if(idx < 0 || idx >= nShells) {
 90     if(nShells> nprob) {                           92     if(nShells> nprob) {
 91       nprob = nShells;                             93       nprob = nShells;
 92       prob.resize(nprob,0.0);                      94       prob.resize(nprob,0.0);
 93     }                                              95     }
 94     G4double sum = 0.0;                            96     G4double sum = 0.0;
 95     for(idx=0; idx<nShells; ++idx) {               97     for(idx=0; idx<nShells; ++idx) {
 96       sum += G4AtomicShells::GetNumberOfElectr     98       sum += G4AtomicShells::GetNumberOfElectrons(Z, idx)
 97         /G4AtomicShells::GetBindingEnergy(Z, i     99         /G4AtomicShells::GetBindingEnergy(Z, idx);
 98       prob[idx] = sum;                            100       prob[idx] = sum;
 99     }                                             101     }
100     sum *= G4UniformRand();                       102     sum *= G4UniformRand();
101     for(idx=0; idx<nShells; ++idx) {              103     for(idx=0; idx<nShells; ++idx) {
102       if(sum <= prob[idx]) { break; }             104       if(sum <= prob[idx]) { break; }
103     }                                             105     }
104   }                                               106   }
105   G4double bindingEnergy = G4AtomicShells::Get    107   G4double bindingEnergy = G4AtomicShells::GetBindingEnergy(Z, idx);
106   G4double cost;                                  108   G4double cost;
107   /*                                              109   /*
108   G4cout << "E(keV)= " << kinEnergyFinal/keV      110   G4cout << "E(keV)= " << kinEnergyFinal/keV 
109          << " Ebind(keV)= " << bindingEnergy      111          << " Ebind(keV)= " << bindingEnergy
110          << " idx= " << idx << " nShells= " <<    112          << " idx= " << idx << " nShells= " << nShells << G4endl;
111   */                                              113   */
112   G4int n = 0;                                    114   G4int n = 0;
113   G4bool isOK = false;                            115   G4bool isOK = false;
114   static const G4int nmax = 100;                  116   static const G4int nmax = 100;
115   do {                                            117   do {
116     ++n;                                          118     ++n;
117     // the atomic electron                        119     // the atomic electron
118     G4double x = -G4Log(G4UniformRand());         120     G4double x = -G4Log(G4UniformRand());
119     G4double eKinEnergy = bindingEnergy*x;        121     G4double eKinEnergy = bindingEnergy*x;
120     G4double ePotEnergy = bindingEnergy*(1.0 +    122     G4double ePotEnergy = bindingEnergy*(1.0 + x);
121     G4double e = kinEnergyFinal + ePotEnergy +    123     G4double e = kinEnergyFinal + ePotEnergy + electron_mass_c2;
122     G4double p = sqrt((e + electron_mass_c2)*(    124     G4double p = sqrt((e + electron_mass_c2)*(e - electron_mass_c2));
123                                                   125 
124     G4double totEnergy = dp->GetTotalEnergy();    126     G4double totEnergy = dp->GetTotalEnergy();
125     G4double totMomentum = dp->GetTotalMomentu    127     G4double totMomentum = dp->GetTotalMomentum();
126     if(dp->GetParticleDefinition() == fElectro    128     if(dp->GetParticleDefinition() == fElectron) {
127       totEnergy += ePotEnergy;                    129       totEnergy += ePotEnergy;
128       totMomentum = sqrt((totEnergy + electron    130       totMomentum = sqrt((totEnergy + electron_mass_c2)
129                          *(totEnergy - electro    131                          *(totEnergy - electron_mass_c2));
130     }                                             132     }
131                                                   133  
132     G4double eTotEnergy = eKinEnergy + electro    134     G4double eTotEnergy = eKinEnergy + electron_mass_c2;
133     G4double eTotMomentum = sqrt(eKinEnergy*(e    135     G4double eTotMomentum = sqrt(eKinEnergy*(eTotEnergy + electron_mass_c2));
134     G4double costet = 2*G4UniformRand() - 1;      136     G4double costet = 2*G4UniformRand() - 1;
135     G4double sintet = sqrt((1 - costet)*(1 + c    137     G4double sintet = sqrt((1 - costet)*(1 + costet));
136                                                   138 
137     cost = 1.0;                                   139     cost = 1.0;
138     if(n >= nmax) {                               140     if(n >= nmax) { 
139       /*                                          141       /*
140       G4ExceptionDescription ed;                  142       G4ExceptionDescription ed;
141       ed << "### G4DeltaAngle Warning: " << n     143       ed << "### G4DeltaAngle Warning: " << n 
142          << " iterations - stop the loop with     144          << " iterations - stop the loop with cost= 1.0 " 
143          << " for " << dp->GetDefinition()->Ge    145          << " for " << dp->GetDefinition()->GetParticleName() << "\n" 
144          << " Ekin(MeV)= " << dp->GetKineticEn    146          << " Ekin(MeV)= " << dp->GetKineticEnergy()/MeV 
145          << " Efinal(MeV)= " << kinEnergyFinal    147          << " Efinal(MeV)= " << kinEnergyFinal/MeV 
146          << " Ebinding(MeV)= " << bindingEnerg    148          << " Ebinding(MeV)= " << bindingEnergy/MeV; 
147       G4Exception("G4DeltaAngle::SampleDirecti    149       G4Exception("G4DeltaAngle::SampleDirection","em0044",
148                   JustWarning, ed,"");            150                   JustWarning, ed,"");
149       */                                          151       */
150       if(0.0 ==  bindingEnergy) { isOK = true;    152       if(0.0 ==  bindingEnergy) { isOK = true; }
151       bindingEnergy = 0.0;                        153       bindingEnergy = 0.0; 
152     }                                             154     } 
153                                                   155 
154     G4double x0 = p*(totMomentum + eTotMomentu    156     G4double x0 = p*(totMomentum + eTotMomentum*costet);
155     /*                                            157     /*
156     G4cout << " x0= " << x0 << " p= " << p        158     G4cout << " x0= " << x0 << " p= " << p 
157            << "  ptot= " << totMomentum << " p    159            << "  ptot= " << totMomentum << " pe= " <<  eTotMomentum
158            << " e= " << e << " totMom= " <<  t    160            << " e= " << e << " totMom= " <<  totMomentum
159            << G4endl;                             161            << G4endl;
160     */                                            162     */
161     if(x0 > 0.0) {                                163     if(x0 > 0.0) {
162       G4double x1 = p*eTotMomentum*sintet;        164       G4double x1 = p*eTotMomentum*sintet;
163       G4double x2 = totEnergy*(eTotEnergy - e)    165       G4double x2 = totEnergy*(eTotEnergy - e) - e*eTotEnergy 
164         - totMomentum*eTotMomentum*costet + el    166         - totMomentum*eTotMomentum*costet + electron_mass_c2*electron_mass_c2;
165       G4double y = -x2/x0;                        167       G4double y = -x2/x0;
166       if(std::abs(y) <= 1.0) {                    168       if(std::abs(y) <= 1.0) { 
167         cost = -(x2 + x1*sqrt(1. - y*y))/x0;      169         cost = -(x2 + x1*sqrt(1. - y*y))/x0; 
168         if(std::abs(cost) <= 1.0) { isOK = tru    170         if(std::abs(cost) <= 1.0) { isOK = true; }
169         else { cost = 1.0; }                      171         else { cost = 1.0; }
170       }                                           172       }
171                                                   173 
172       /*                                          174       /*
173       G4cout << " Ekin(MeV)= " << dp->GetKinet    175       G4cout << " Ekin(MeV)= " << dp->GetKineticEnergy() 
174              << " e1(keV)= " <<  eKinEnergy/ke    176              << " e1(keV)= " <<  eKinEnergy/keV 
175              << " e2(keV)= " << (e - electron_    177              << " e2(keV)= " << (e - electron_mass_c2)/keV 
176              << " 1-cost= " << 1-cost             178              << " 1-cost= " << 1-cost 
177              << " x0= " << x0 << " x1= " << x1    179              << " x0= " << x0 << " x1= " << x1 << " x2= " << x2 
178              << G4endl;                           180              << G4endl; 
179       */                                          181       */
180     }                                             182     }
181                                                   183 
182     // Loop checking, 03-Aug-2015, Vladimir Iv    184     // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
183   } while(!isOK);                                 185   } while(!isOK);
184                                                   186 
185   G4double sint = sqrt((1 - cost)*(1 + cost));    187   G4double sint = sqrt((1 - cost)*(1 + cost));
186   G4double phi  = twopi*G4UniformRand();          188   G4double phi  = twopi*G4UniformRand(); 
187                                                   189 
188   fLocalDirection.set(sint*cos(phi), sint*sin(    190   fLocalDirection.set(sint*cos(phi), sint*sin(phi), cost);
189   fLocalDirection.rotateUz(dp->GetMomentumDire    191   fLocalDirection.rotateUz(dp->GetMomentumDirection());
190                                                   192 
191   return fLocalDirection;                         193   return fLocalDirection;
192 }                                                 194 }
                                                   >> 195 
                                                   >> 196 void G4DeltaAngle::PrintGeneratorInformation() const
                                                   >> 197 {} 
193                                                   198