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25 // 25 //
26 ////////////////////////////////////////////// 26 ////////////////////////////////////////////////////////////////////////////////
27 // 27 // //
28 // File: G4ECDecay.cc 28 // File: G4ECDecay.cc //
29 // Author: D.H. Wright (SLAC) 29 // Author: D.H. Wright (SLAC) //
30 // Date: 25 November 2014 30 // Date: 25 November 2014 //
31 // 31 // //
32 ////////////////////////////////////////////// 32 ////////////////////////////////////////////////////////////////////////////////
33 33
34 #include "G4ECDecay.hh" 34 #include "G4ECDecay.hh"
35 #include "G4IonTable.hh" 35 #include "G4IonTable.hh"
36 #include "Randomize.hh" 36 #include "Randomize.hh"
37 #include "G4ThreeVector.hh" 37 #include "G4ThreeVector.hh"
38 #include "G4DynamicParticle.hh" 38 #include "G4DynamicParticle.hh"
39 #include "G4DecayProducts.hh" 39 #include "G4DecayProducts.hh"
40 #include "G4VAtomDeexcitation.hh" 40 #include "G4VAtomDeexcitation.hh"
41 #include "G4AtomicShells.hh" 41 #include "G4AtomicShells.hh"
42 #include "G4Electron.hh" 42 #include "G4Electron.hh"
43 #include "G4LossTableManager.hh" 43 #include "G4LossTableManager.hh"
44 #include "G4PhysicalConstants.hh" 44 #include "G4PhysicalConstants.hh"
45 #include "G4SystemOfUnits.hh" 45 #include "G4SystemOfUnits.hh"
46 46
47 G4ECDecay::G4ECDecay(const G4ParticleDefinitio 47 G4ECDecay::G4ECDecay(const G4ParticleDefinition* theParentNucleus,
48 const G4double& branch, c 48 const G4double& branch, const G4double& Qvalue,
49 const G4double& excitatio 49 const G4double& excitationE,
50 const G4Ions::G4FloatLeve <<
51 const G4RadioactiveDecayM 50 const G4RadioactiveDecayMode& mode)
52 : G4NuclearDecay("electron capture", mode, ex << 51 : G4NuclearDecay("electron capture", mode, excitationE), transitionQ(Qvalue),
53 applyARM(true) 52 applyARM(true)
54 { 53 {
55 SetParent(theParentNucleus); // Store name 54 SetParent(theParentNucleus); // Store name of parent nucleus, delete G4MT_parent
56 SetBR(branch); 55 SetBR(branch);
57 56
58 SetNumberOfDaughters(2); 57 SetNumberOfDaughters(2);
59 G4IonTable* theIonTable = 58 G4IonTable* theIonTable =
60 (G4IonTable*)(G4ParticleTable::GetParticle 59 (G4IonTable*)(G4ParticleTable::GetParticleTable()->GetIonTable());
61 G4int daughterZ = theParentNucleus->GetAtomi 60 G4int daughterZ = theParentNucleus->GetAtomicNumber() - 1;
62 G4int daughterA = theParentNucleus->GetAtomi 61 G4int daughterA = theParentNucleus->GetAtomicMass();
63 SetDaughter(0, theIonTable->GetIon(daughterZ << 62 SetDaughter(0, theIonTable->GetIon(daughterZ, daughterA, excitationE) );
64 SetDaughter(1, "nu_e"); 63 SetDaughter(1, "nu_e");
65 DefineSubshellProbabilities(daughterZ, daugh <<
66 } 64 }
67 65
68 66
69 G4ECDecay::~G4ECDecay() 67 G4ECDecay::~G4ECDecay()
70 {} 68 {}
71 69
72 70
73 G4DecayProducts* G4ECDecay::DecayIt(G4double) 71 G4DecayProducts* G4ECDecay::DecayIt(G4double)
74 { 72 {
75 // Fill G4MT_parent with theParentNucleus (s 73 // Fill G4MT_parent with theParentNucleus (stored by SetParent in ctor)
76 CheckAndFillParent(); 74 CheckAndFillParent();
77 75
78 // Fill G4MT_daughters with alpha and residu 76 // Fill G4MT_daughters with alpha and residual nucleus (stored by SetDaughter)
79 CheckAndFillDaughters(); 77 CheckAndFillDaughters();
80 78
81 // Get shell number of captured electron 79 // Get shell number of captured electron
82 G4int shellIndex = -1; 80 G4int shellIndex = -1;
83 G4double ran; <<
84 switch (theMode) 81 switch (theMode)
85 { 82 {
86 case KshellEC: 83 case KshellEC:
87 shellIndex = 0; 84 shellIndex = 0;
88 break; 85 break;
89 case LshellEC: // PL1+PL2+PL3=1 << 86 case LshellEC:
90 ran=G4UniformRand(); << 87 shellIndex = G4int(G4UniformRand()*3) + 1;
91 if (ran <= PL1) shellIndex =1; <<
92 else if (ran<= (PL1+PL2)) shellIndex =2; <<
93 else shellIndex =3; <<
94 break; 88 break;
95 case MshellEC: // PM1+PM2+PM3=1 << 89 case MshellEC:
96 ran=G4UniformRand(); << 90 shellIndex = G4int(G4UniformRand()*3) + 4;
97 if (ran < PM1) shellIndex =4; <<
98 else if (ran< (PM1+PM2)) shellIndex =5; <<
99 else shellIndex = 6; <<
100 break; <<
101 case NshellEC: // PN1+PN2+PN3=1 <<
102 ran=G4UniformRand(); <<
103 if (ran < PN1) shellIndex = 9; <<
104 else if (ran<= (PN1+PN2)) shellIndex =2; <<
105 else shellIndex =10; <<
106 break; 91 break;
107 default: 92 default:
108 G4Exception("G4ECDecay::DecayIt()", "HAD 93 G4Exception("G4ECDecay::DecayIt()", "HAD_RDM_009",
109 FatalException, "Invalid ele 94 FatalException, "Invalid electron shell selected");
110 } 95 }
111 96
112 // Initialize decay products with parent nuc 97 // Initialize decay products with parent nucleus at rest
113 G4DynamicParticle parentParticle(G4MT_parent 98 G4DynamicParticle parentParticle(G4MT_parent, G4ThreeVector(0,0,0), 0.0);
114 G4DecayProducts* products = new G4DecayProdu 99 G4DecayProducts* products = new G4DecayProducts(parentParticle);
115 G4double eBind = 0.0; 100 G4double eBind = 0.0;
116 101
117 // G4LossTableManager must already be initia 102 // G4LossTableManager must already be initialized with G4UAtomicDeexcitation
118 // This is currently done in G4RadioactiveDe 103 // This is currently done in G4RadioactiveDecay::BuildPhysicsTable
119 G4VAtomDeexcitation* atomDeex = 104 G4VAtomDeexcitation* atomDeex =
120 G4LossTableManager::Instance()->Atom 105 G4LossTableManager::Instance()->AtomDeexcitation();
121 std::vector<G4DynamicParticle*> armProducts; 106 std::vector<G4DynamicParticle*> armProducts;
122 107
123 if (applyARM) { 108 if (applyARM) {
124 if (nullptr != atomDeex) { << 109 if (atomDeex) {
125 G4int aZ = G4MT_daughters[0]->GetAtomicN 110 G4int aZ = G4MT_daughters[0]->GetAtomicNumber();
126 G4int nShells = G4AtomicShells::GetNumbe 111 G4int nShells = G4AtomicShells::GetNumberOfShells(aZ);
127 if (shellIndex >= nShells) shellIndex = 112 if (shellIndex >= nShells) shellIndex = nShells;
128 G4AtomicShellEnumerator as = G4AtomicShe 113 G4AtomicShellEnumerator as = G4AtomicShellEnumerator(shellIndex);
129 const G4AtomicShell* shell = atomDeex->G 114 const G4AtomicShell* shell = atomDeex->GetAtomicShell(aZ, as);
130 eBind = shell->BindingEnergy(); 115 eBind = shell->BindingEnergy();
131 if (atomDeex->IsFluoActive() && aZ > 5 & << 116 if (atomDeex->IsFluoActive() && aZ > 5 && aZ < 100) {
132 // Do atomic relaxation 117 // Do atomic relaxation
133 // VI, SI << 118 // VI, SI
134 // Allows fixing of Bugzilla 1727 << 119 // Allows fixing of Bugzilla 1727
135 //const G4double deexLimit = 0.1*keV; << 120 //const G4double deexLimit = 0.1*keV;
136 G4double deexLimit = 0.1*keV; << 121 G4double deexLimit = 0.1*keV;
137 if (G4EmParameters::Instance()->Deexcitation << 122 if (G4EmParameters::Instance()->DeexcitationIgnoreCut()) deexLimit =0.;
138 << 123 //
139 atomDeex->GenerateParticles(&armProduc 124 atomDeex->GenerateParticles(&armProducts, shell, aZ, deexLimit, deexLimit);
140 } 125 }
141 126
142 G4double productEnergy = 0.; 127 G4double productEnergy = 0.;
143 for (std::size_t i = 0; i < armProducts. << 128 for (G4int i = 0; i < G4int(armProducts.size()); i++)
144 productEnergy += armProducts[i]->GetKi 129 productEnergy += armProducts[i]->GetKineticEnergy();
145 } << 130
146 G4double deficit = shell->BindingEnergy( 131 G4double deficit = shell->BindingEnergy() - productEnergy;
147 if (deficit > 0.0) { 132 if (deficit > 0.0) {
148 // Add a dummy electron to make up ext 133 // Add a dummy electron to make up extra energy
149 G4double cosTh = 1.-2.*G4UniformRand() 134 G4double cosTh = 1.-2.*G4UniformRand();
150 G4double sinTh = std::sqrt(1.- cosTh*c 135 G4double sinTh = std::sqrt(1.- cosTh*cosTh);
151 G4double phi = twopi*G4UniformRand(); 136 G4double phi = twopi*G4UniformRand();
152 137
153 G4ThreeVector electronDirection(sinTh* 138 G4ThreeVector electronDirection(sinTh*std::sin(phi),
154 sinTh* 139 sinTh*std::cos(phi), cosTh);
155 G4DynamicParticle* extra = 140 G4DynamicParticle* extra =
156 new G4DynamicParticle(G4Electron::El 141 new G4DynamicParticle(G4Electron::Electron(), electronDirection,
157 deficit); 142 deficit);
158 armProducts.push_back(extra); 143 armProducts.push_back(extra);
159 } 144 }
160 } // atomDeex 145 } // atomDeex
161 } // applyARM 146 } // applyARM
162 147
163 G4double daughterMass = G4MT_daughters[0]->G 148 G4double daughterMass = G4MT_daughters[0]->GetPDGMass();
164 149
165 // CM momentum using Q value corrected for b 150 // CM momentum using Q value corrected for binding energy of captured electron
166 G4double Q = transitionQ - eBind; << 151 G4double Q = transitionQ - eBind;
167 <<
168 // Negative transitionQ values for some rare <<
169 // Absolute values in these cases are small <<
170 if (Q < 0.0) Q = 0.0; <<
171 <<
172 G4double cmMomentum = Q*(Q + 2.*daughterMass 152 G4double cmMomentum = Q*(Q + 2.*daughterMass)/(Q + daughterMass)/2.;
173 153
174 G4double costheta = 2.*G4UniformRand() - 1.0 154 G4double costheta = 2.*G4UniformRand() - 1.0;
175 G4double sintheta = std::sqrt(1.0 - costheta 155 G4double sintheta = std::sqrt(1.0 - costheta*costheta);
176 G4double phi = twopi*G4UniformRand()*rad; 156 G4double phi = twopi*G4UniformRand()*rad;
177 G4ThreeVector direction(sintheta*std::cos(ph 157 G4ThreeVector direction(sintheta*std::cos(phi),sintheta*std::sin(phi),
178 costheta); 158 costheta);
179 G4double KE = cmMomentum; 159 G4double KE = cmMomentum;
180 G4DynamicParticle* daughterParticle = 160 G4DynamicParticle* daughterParticle =
181 new G4DynamicParticle(G4MT_daughters[1], d 161 new G4DynamicParticle(G4MT_daughters[1], direction, KE, 0.0);
182 products->PushProducts(daughterParticle); 162 products->PushProducts(daughterParticle);
183 163
184 KE = std::sqrt(cmMomentum*cmMomentum + daugh 164 KE = std::sqrt(cmMomentum*cmMomentum + daughterMass*daughterMass) - daughterMass;
185 daughterParticle = 165 daughterParticle =
186 new G4DynamicParticle(G4MT_daughters[0], - 166 new G4DynamicParticle(G4MT_daughters[0], -1.0*direction, KE, daughterMass);
187 products->PushProducts(daughterParticle); 167 products->PushProducts(daughterParticle);
188 168
189 std::size_t nArm = armProducts.size(); << 169 G4int nArm = armProducts.size();
190 if (nArm > 0) { 170 if (nArm > 0) {
191 G4ThreeVector bst = daughterParticle->Get4 171 G4ThreeVector bst = daughterParticle->Get4Momentum().boostVector();
192 for (std::size_t i = 0; i < nArm; ++i) { << 172 for (G4int i = 0; i < nArm; ++i) {
193 G4DynamicParticle* dp = armProducts[i]; 173 G4DynamicParticle* dp = armProducts[i];
194 G4LorentzVector lv = dp->Get4Momentum(). 174 G4LorentzVector lv = dp->Get4Momentum().boost(bst);
195 dp->Set4Momentum(lv); 175 dp->Set4Momentum(lv);
196 products->PushProducts(dp); 176 products->PushProducts(dp);
197 } 177 }
198 } 178 }
199 179
200 // Energy conservation check 180 // Energy conservation check
201 /* 181 /*
202 G4int newSize = products->entries(); 182 G4int newSize = products->entries();
203 G4DynamicParticle* temp = 0; 183 G4DynamicParticle* temp = 0;
204 G4double KEsum = 0.0; 184 G4double KEsum = 0.0;
205 for (G4int i = 0; i < newSize; i++) { 185 for (G4int i = 0; i < newSize; i++) {
206 temp = products->operator[](i); 186 temp = products->operator[](i);
207 KEsum += temp->GetKineticEnergy(); 187 KEsum += temp->GetKineticEnergy();
208 } 188 }
209 189
210 G4double eCons = (transitionQ - KEsum)/keV; 190 G4double eCons = (transitionQ - KEsum)/keV;
211 G4cout << " EC check: Ediff (keV) = " << eCo 191 G4cout << " EC check: Ediff (keV) = " << eCons << G4endl;
212 */ 192 */
213 return products; 193 return products;
214 } 194 }
215 195
216 196
217 void G4ECDecay::DumpNuclearInfo() 197 void G4ECDecay::DumpNuclearInfo()
218 { 198 {
219 G4cout << " G4ECDecay of parent nucleus " << 199 G4cout << " G4ECDecay of parent nucleus " << GetParentName() << " from ";
220 if (theMode == 3) { 200 if (theMode == 3) {
221 G4cout << "K shell"; 201 G4cout << "K shell";
222 } else if (theMode == 4) { 202 } else if (theMode == 4) {
223 G4cout << "L shell"; 203 G4cout << "L shell";
224 } else if (theMode == 5) { 204 } else if (theMode == 5) {
225 G4cout << "M shell"; 205 G4cout << "M shell";
226 } 206 }
227 else if (theMode == 6) { <<
228 G4cout << "N shell"; <<
229 } <<
230 G4cout << G4endl; 207 G4cout << G4endl;
231 G4cout << " to " << GetDaughterName(0) << " 208 G4cout << " to " << GetDaughterName(0) << " + " << GetDaughterName(1)
232 << " with branching ratio " << GetBR( 209 << " with branching ratio " << GetBR() << "% and Q value "
233 << transitionQ << G4endl; 210 << transitionQ << G4endl;
234 } 211 }
235 void G4ECDecay::DefineSubshellProbabilities(G4 <<
236 { //Implementation for the case of allowed tra <<
237 //PL1+PL2=1. , PM1+PM2=1., PN1+PN2=1. <<
238 PL1 = 1./(1+PL2overPL1[Z-1]); <<
239 PL2 = PL1*PL2overPL1[Z-1]; <<
240 PM1 = 1./(1+PM2overPM1[Z-1]); <<
241 PM2 = PM1*PM2overPM1[Z-1]; <<
242 PN1 = 1./(1+PN2overPN1[Z-1]); <<
243 PN2 = PN1*PN2overPN1[Z-1]; <<
244 } <<
245 ////////////////////////////////////////////// <<
246 // Table of subshell ratio probability PL2/PL1 <<
247 // PL2/PL1 = (fL2/gL1)^2 <<
248 // with gL1 and fL2 the bound electron radial <<
249 // Bambynek et al., Rev. Modern Phy <<
250 // For Z=18 interpolation between Z=17 and Z= <<
251 ////////////////////////////////////////////// <<
252 const G4double G4ECDecay::PL2overPL1[100] = { <<
253 0.0000e+00, 0.0000e+00, 0.0000e+00, 0.00 <<
254 2.6438e-04, 3.5456e-04, 4.5790e-04, 6.15 <<
255 1.4361e-03, 1.6886e-03, 1.9609e-03, 2.26 <<
256 3.6338e-03, 4.0310e-03, 4.4541e-03, 4.89 <<
257 6.9061e-03, 7.4607e-03, 8.0398e-03, 8.64 <<
258 1.1284e-02, 1.2004e-02, 1.2744e-02, 1.35 <<
259 1.6857e-02, 1.7764e-02, 1.8696e-02, 1.96 <<
260 2.3788e-02, 2.4896e-02, 2.6036e-02, 2.72 <<
261 3.2220e-02, 3.3561e-02, 3.4937e-02, 3.63 <<
262 4.2399e-02, 4.4010e-02, 4.5668e-02, 4.73 <<
263 5.4625e-02, 5.6565e-02, 5.8547e-02, 6.05 <<
264 6.9336e-02, 7.1667e-02, 7.4075e-02, 7.65 <<
265 8.7135e-02, 8.9995e-02, 9.2919e-02, 9.59 <<
266 1.0899e-01, 1.1249e-01, 1.1613e-01, 1.19 <<
267 1.3627e-01, 1.4071e-01}; <<
268 ////////////////////////////////////////////// <<
269 // Table of subshell ratio probability PM2/PM1 <<
270 // PM2/PM1 = (fM2/gM1)^2 <<
271 // with gM1 and fM2 the bound electron radial <<
272 // Bambynek et al., Rev. Modern Phy <<
273 ////////////////////////////////////////////// <<
274 const G4double G4ECDecay::PM2overPM1[100] = { <<
275 0.0000e+00, 0.0000e+00, 0.0000e+00, 0.00 <<
276 0.0000e+00, 0.0000e+00, 0.0000e+00, 0.00 <<
277 1.0210e-03, 1.2641e-03, 1.5231e-03, 1.79 <<
278 3.3637e-03, 3.7909e-03, 4.2049e-03, 4.70 <<
279 6.7045e-03, 7.2997e-03, 7.9438e-03, 8.62 <<
280 1.1594e-02, 1.2408e-02, 1.3244e-02, 1.41 <<
281 1.7910e-02, 1.8934e-02, 1.9986e-02, 2.10 <<
282 2.5750e-02, 2.7006e-02, 2.8302e-02, 2.96 <<
283 3.5328e-02, 3.6852e-02, 3.8414e-02, 4.00 <<
284 4.6909e-02, 4.8767e-02, 5.0662e-02, 5.26 <<
285 6.0930e-02, 6.3141e-02, 6.5413e-02, 6.77 <<
286 7.7721e-02, 8.0408e-02, 8.3128e-02, 8.59 <<
287 9.8025e-02, 1.0130e-01, 1.0463e-01, 1.08 <<
288 1.2290e-01, 1.2688e-01, 1.3101e-01, 1.35 <<
289 1.5384e-01, 1.5887e-01}; <<
290 ////////////////////////////////////////////// <<
291 // Table of subshell ratio probability PN2/PN1 <<
292 // PN2/PN1 = (fN2/gN1)^2 <<
293 // with gN1 and fN2 are the bound electron rad <<
294 // Bambynek et al., Rev. Modern Phy <<
295 // For Z=44 interpolation between Z=43 and Z= <<
296 ////////////////////////////////////////////// <<
297 const G4double G4ECDecay::PN2overPN1[100] = { <<
298 0.0000e+00, 0.0000e+00, 0.0000e+00, 0.00 <<
299 0.0000e+00, 0.0000e+00, 0.0000e+00, 0.00 <<
300 0.0000e+00, 0.0000e+00, 0.0000e+00, 0.00 <<
301 0.0000e+00, 0.0000e+00, 0.0000e+00, 0.00 <<
302 0.0000e+00, 0.0000e+00, 0.0000e+00, 0.00 <<
303 0.0000e+00, 9.6988e-03, 1.0797e-02, 1.17 <<
304 1.5511e-02, 1.6579e-02, 1.7646e-02, 1.87 <<
305 2.3710e-02, 2.5058e-02, 2.6438e-02, 2.78 <<
306 3.3843e-02, 3.5377e-02, 3.6886e-02, 3.85 <<
307 4.5470e-02, 4.7247e-02, 4.9138e-02, 5.10 <<
308 5.9366e-02, 6.1800e-02, 6.3945e-02, 6.63 <<
309 7.6538e-02, 7.9276e-02, 8.2070e-02, 8.49 <<
310 9.7337e-02, 1.0069e-01, 1.0410e-01, 1.07 <<
311 1.2282e-01, 1.2709e-01, 1.3114e-01, 1.35 <<
312 1.5443e-01, 1.5954e-01}; <<
313 212
314 213