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25 // 25 //
26 // G4PhaseSpaceDecayChannel class implementati 26 // G4PhaseSpaceDecayChannel class implementation
27 // 27 //
28 // Author: H.Kurashige, 27 July 1996 28 // Author: H.Kurashige, 27 July 1996
29 // ------------------------------------------- 29 // --------------------------------------------------------------------
30 30
31 #include "G4PhaseSpaceDecayChannel.hh" 31 #include "G4PhaseSpaceDecayChannel.hh"
32 32
33 #include "G4DecayProducts.hh" 33 #include "G4DecayProducts.hh"
34 #include "G4LorentzRotation.hh" 34 #include "G4LorentzRotation.hh"
35 #include "G4LorentzVector.hh" 35 #include "G4LorentzVector.hh"
36 #include "G4ParticleDefinition.hh" 36 #include "G4ParticleDefinition.hh"
37 #include "G4PhysicalConstants.hh" 37 #include "G4PhysicalConstants.hh"
38 #include "G4SystemOfUnits.hh" 38 #include "G4SystemOfUnits.hh"
39 #include "G4VDecayChannel.hh" 39 #include "G4VDecayChannel.hh"
40 #include "Randomize.hh" 40 #include "Randomize.hh"
41 41
42 G4PhaseSpaceDecayChannel::G4PhaseSpaceDecayCha 42 G4PhaseSpaceDecayChannel::G4PhaseSpaceDecayChannel(G4int Verbose)
43 : G4VDecayChannel("Phase Space", Verbose) 43 : G4VDecayChannel("Phase Space", Verbose)
44 {} 44 {}
45 45
46 G4PhaseSpaceDecayChannel::G4PhaseSpaceDecayCha 46 G4PhaseSpaceDecayChannel::G4PhaseSpaceDecayChannel(const G4String& theParentName, G4double theBR,
47 47 G4int theNumberOfDaughters,
48 48 const G4String& theDaughterName1,
49 49 const G4String& theDaughterName2,
50 50 const G4String& theDaughterName3,
51 51 const G4String& theDaughterName4,
52 52 const G4String& theDaughterName5)
53 : G4VDecayChannel("Phase Space", theParentNa 53 : G4VDecayChannel("Phase Space", theParentName, theBR, theNumberOfDaughters, theDaughterName1,
54 theDaughterName2, theDaugh 54 theDaughterName2, theDaughterName3, theDaughterName4, theDaughterName5)
55 {} 55 {}
56 56
57 G4DecayProducts* G4PhaseSpaceDecayChannel::Dec 57 G4DecayProducts* G4PhaseSpaceDecayChannel::DecayIt(G4double parentMass)
58 { 58 {
59 #ifdef G4VERBOSE 59 #ifdef G4VERBOSE
60 if (GetVerboseLevel() > 1) G4cout << "G4Phas 60 if (GetVerboseLevel() > 1) G4cout << "G4PhaseSpaceDecayChannel::DecayIt()" << G4endl;
61 #endif 61 #endif
62 62
63 G4DecayProducts* products = nullptr; 63 G4DecayProducts* products = nullptr;
64 64
65 CheckAndFillParent(); 65 CheckAndFillParent();
66 CheckAndFillDaughters(); 66 CheckAndFillDaughters();
67 67
68 if (parentMass > 0.0) 68 if (parentMass > 0.0)
69 current_parent_mass.Put(parentMass); 69 current_parent_mass.Put(parentMass);
70 else 70 else
71 current_parent_mass.Put(G4MT_parent_mass); 71 current_parent_mass.Put(G4MT_parent_mass);
72 72
73 switch (numberOfDaughters) { 73 switch (numberOfDaughters) {
74 case 0: 74 case 0:
75 #ifdef G4VERBOSE 75 #ifdef G4VERBOSE
76 if (GetVerboseLevel() > 0) { 76 if (GetVerboseLevel() > 0) {
77 G4cout << "G4PhaseSpaceDecayChannel::D 77 G4cout << "G4PhaseSpaceDecayChannel::DecayIt() -";
78 G4cout << " daughters not defined " << 78 G4cout << " daughters not defined " << G4endl;
79 } 79 }
80 #endif 80 #endif
81 break; 81 break;
82 case 1: 82 case 1:
83 products = OneBodyDecayIt(); 83 products = OneBodyDecayIt();
84 break; 84 break;
85 case 2: 85 case 2:
86 products = TwoBodyDecayIt(); 86 products = TwoBodyDecayIt();
87 break; 87 break;
88 case 3: 88 case 3:
89 products = ThreeBodyDecayIt(); 89 products = ThreeBodyDecayIt();
90 break; 90 break;
91 default: 91 default:
92 products = ManyBodyDecayIt(); 92 products = ManyBodyDecayIt();
93 break; 93 break;
94 } 94 }
95 #ifdef G4VERBOSE 95 #ifdef G4VERBOSE
96 if ((products == nullptr) && (GetVerboseLeve 96 if ((products == nullptr) && (GetVerboseLevel() > 0)) {
97 G4cout << "G4PhaseSpaceDecayChannel::Decay 97 G4cout << "G4PhaseSpaceDecayChannel::DecayIt() - ";
98 G4cout << *parent_name << " cannot decay " 98 G4cout << *parent_name << " cannot decay " << G4endl;
99 DumpInfo(); 99 DumpInfo();
100 } 100 }
101 #endif 101 #endif
102 return products; 102 return products;
103 } 103 }
104 104
105 G4DecayProducts* G4PhaseSpaceDecayChannel::One 105 G4DecayProducts* G4PhaseSpaceDecayChannel::OneBodyDecayIt()
106 { 106 {
107 #ifdef G4VERBOSE 107 #ifdef G4VERBOSE
108 if (GetVerboseLevel() > 1) G4cout << "G4Phas 108 if (GetVerboseLevel() > 1) G4cout << "G4PhaseSpaceDecayChannel::OneBodyDecayIt()" << G4endl;
109 #endif 109 #endif
110 // parent mass 110 // parent mass
111 G4double parentmass = current_parent_mass.Ge 111 G4double parentmass = current_parent_mass.Get();
112 112
113 // create parent G4DynamicParticle at rest 113 // create parent G4DynamicParticle at rest
114 G4ThreeVector dummy; 114 G4ThreeVector dummy;
115 auto parentparticle = new G4DynamicParticle( 115 auto parentparticle = new G4DynamicParticle(G4MT_parent, dummy, 0.0, parentmass);
116 // create G4Decayproducts 116 // create G4Decayproducts
117 auto products = new G4DecayProducts(*parentp 117 auto products = new G4DecayProducts(*parentparticle);
118 delete parentparticle; 118 delete parentparticle;
119 119
120 // create daughter G4DynamicParticle at rest 120 // create daughter G4DynamicParticle at rest
121 auto daughterparticle = new G4DynamicParticl 121 auto daughterparticle = new G4DynamicParticle(G4MT_daughters[0], dummy, 0.0);
122 if (useGivenDaughterMass) daughterparticle-> 122 if (useGivenDaughterMass) daughterparticle->SetMass(givenDaughterMasses[0]);
123 products->PushProducts(daughterparticle); 123 products->PushProducts(daughterparticle);
124 124
125 #ifdef G4VERBOSE 125 #ifdef G4VERBOSE
126 if (GetVerboseLevel() > 1) { 126 if (GetVerboseLevel() > 1) {
127 G4cout << "G4PhaseSpaceDecayChannel::OneBo 127 G4cout << "G4PhaseSpaceDecayChannel::OneBodyDecayIt() -";
128 G4cout << " create decay products in rest 128 G4cout << " create decay products in rest frame " << G4endl;
129 products->DumpInfo(); 129 products->DumpInfo();
130 } 130 }
131 #endif 131 #endif
132 return products; 132 return products;
133 } 133 }
134 134
135 G4DecayProducts* G4PhaseSpaceDecayChannel::Two 135 G4DecayProducts* G4PhaseSpaceDecayChannel::TwoBodyDecayIt()
136 { 136 {
137 #ifdef G4VERBOSE 137 #ifdef G4VERBOSE
138 if (GetVerboseLevel() > 1) G4cout << "G4Phas 138 if (GetVerboseLevel() > 1) G4cout << "G4PhaseSpaceDecayChannel::TwoBodyDecayIt()" << G4endl;
139 #endif 139 #endif
140 // parent mass 140 // parent mass
141 G4double parentmass = current_parent_mass.Ge 141 G4double parentmass = current_parent_mass.Get();
142 142
143 // daughters'mass, width 143 // daughters'mass, width
144 G4double daughtermass[2], daughterwidth[2]; 144 G4double daughtermass[2], daughterwidth[2];
145 daughtermass[0] = G4MT_daughters_mass[0]; 145 daughtermass[0] = G4MT_daughters_mass[0];
146 daughtermass[1] = G4MT_daughters_mass[1]; 146 daughtermass[1] = G4MT_daughters_mass[1];
147 daughterwidth[0] = G4MT_daughters_width[0]; 147 daughterwidth[0] = G4MT_daughters_width[0];
148 daughterwidth[1] = G4MT_daughters_width[1]; 148 daughterwidth[1] = G4MT_daughters_width[1];
149 149
150 // create parent G4DynamicParticle at rest 150 // create parent G4DynamicParticle at rest
151 G4ThreeVector dummy; 151 G4ThreeVector dummy;
152 auto parentparticle = new G4DynamicParticle( 152 auto parentparticle = new G4DynamicParticle(G4MT_parent, dummy, 0.0, parentmass);
153 // create G4Decayproducts 153 // create G4Decayproducts
154 auto products = new G4DecayProducts(*parentp 154 auto products = new G4DecayProducts(*parentparticle);
155 delete parentparticle; 155 delete parentparticle;
156 156
157 if (!useGivenDaughterMass) { 157 if (!useGivenDaughterMass) {
158 G4bool withWidth = (daughterwidth[0] > 1.0 158 G4bool withWidth = (daughterwidth[0] > 1.0e-3 * daughtermass[0])
159 || (daughterwidth[1] > 159 || (daughterwidth[1] > 1.0e-3 * daughtermass[1]);
160 if (withWidth) { 160 if (withWidth) {
161 G4double sumofdaughterwidthsq = 161 G4double sumofdaughterwidthsq =
162 daughterwidth[0] * daughterwidth[0] + 162 daughterwidth[0] * daughterwidth[0] + daughterwidth[1] * daughterwidth[1];
163 // check parent mass and daughter mass 163 // check parent mass and daughter mass
164 G4double maxDev = 164 G4double maxDev =
165 (parentmass - daughtermass[0] - daught 165 (parentmass - daughtermass[0] - daughtermass[1]) / std::sqrt(sumofdaughterwidthsq);
166 if (maxDev <= -1.0 * rangeMass) { 166 if (maxDev <= -1.0 * rangeMass) {
167 #ifdef G4VERBOSE 167 #ifdef G4VERBOSE
168 if (GetVerboseLevel() > 0) { 168 if (GetVerboseLevel() > 0) {
169 G4cout << "G4PhaseSpaceDecayChannel: 169 G4cout << "G4PhaseSpaceDecayChannel::TwoBodyDecayIt()" << G4endl
170 << "Sum of daughter mass is l 170 << "Sum of daughter mass is larger than parent mass!" << G4endl;
171 G4cout << "Parent :" << G4MT_parent- 171 G4cout << "Parent :" << G4MT_parent->GetParticleName() << " "
172 << current_parent_mass.Get() 172 << current_parent_mass.Get() / GeV << G4endl;
173 G4cout << "Daughter 1 :" << G4MT_dau 173 G4cout << "Daughter 1 :" << G4MT_daughters[0]->GetParticleName() << " "
174 << daughtermass[0] / GeV << G 174 << daughtermass[0] / GeV << G4endl;
175 G4cout << "Daughter 2:" << G4MT_daug 175 G4cout << "Daughter 2:" << G4MT_daughters[1]->GetParticleName() << " "
176 << daughtermass[1] / GeV << G 176 << daughtermass[1] / GeV << G4endl;
177 } 177 }
178 #endif 178 #endif
179 G4Exception("G4PhaseSpaceDecayChannel: 179 G4Exception("G4PhaseSpaceDecayChannel::TwoBodyDecayIt()", "PART112", JustWarning,
180 "Cannot create decay produ 180 "Cannot create decay products: sum of daughter mass is \
181 larger than parent mass!" 181 larger than parent mass!");
182 return products; 182 return products;
183 } 183 }
184 G4double dm1 = daughtermass[0]; 184 G4double dm1 = daughtermass[0];
185 if (daughterwidth[0] > 0.) dm1 = Dynamic 185 if (daughterwidth[0] > 0.) dm1 = DynamicalMass(daughtermass[0], daughterwidth[0], maxDev);
186 G4double dm2 = daughtermass[1]; 186 G4double dm2 = daughtermass[1];
187 if (daughterwidth[1] > 0.) dm2 = Dynamic 187 if (daughterwidth[1] > 0.) dm2 = DynamicalMass(daughtermass[1], daughterwidth[1], maxDev);
188 while (dm1 + dm2 > parentmass) // Loop 188 while (dm1 + dm2 > parentmass) // Loop checking, 09.08.2015, K.Kurashige
189 { 189 {
190 dm1 = DynamicalMass(daughtermass[0], d 190 dm1 = DynamicalMass(daughtermass[0], daughterwidth[0], maxDev);
191 dm2 = DynamicalMass(daughtermass[1], d 191 dm2 = DynamicalMass(daughtermass[1], daughterwidth[1], maxDev);
192 } 192 }
193 daughtermass[0] = dm1; 193 daughtermass[0] = dm1;
194 daughtermass[1] = dm2; 194 daughtermass[1] = dm2;
195 } 195 }
196 } 196 }
197 else { 197 else {
198 // use given daughter mass; 198 // use given daughter mass;
199 daughtermass[0] = givenDaughterMasses[0]; 199 daughtermass[0] = givenDaughterMasses[0];
200 daughtermass[1] = givenDaughterMasses[1]; 200 daughtermass[1] = givenDaughterMasses[1];
201 } 201 }
202 if (parentmass < daughtermass[0] + daughterm 202 if (parentmass < daughtermass[0] + daughtermass[1]) {
203 #ifdef G4VERBOSE 203 #ifdef G4VERBOSE
204 if (GetVerboseLevel() > 0) { 204 if (GetVerboseLevel() > 0) {
205 G4cout << "G4PhaseSpaceDecayChannel::Two 205 G4cout << "G4PhaseSpaceDecayChannel::TwoBodyDecayIt()" << G4endl
206 << "Sum of daughter mass is large 206 << "Sum of daughter mass is larger than parent mass!" << G4endl;
207 G4cout << "Parent :" << G4MT_parent->Get 207 G4cout << "Parent :" << G4MT_parent->GetParticleName() << " "
208 << current_parent_mass.Get() / Ge 208 << current_parent_mass.Get() / GeV << G4endl;
209 G4cout << "Daughter 1 :" << G4MT_daughte 209 G4cout << "Daughter 1 :" << G4MT_daughters[0]->GetParticleName() << " "
210 << daughtermass[0] / GeV << G4end 210 << daughtermass[0] / GeV << G4endl;
211 G4cout << "Daughter 2:" << G4MT_daughter 211 G4cout << "Daughter 2:" << G4MT_daughters[1]->GetParticleName() << " "
212 << daughtermass[1] / GeV << G4end 212 << daughtermass[1] / GeV << G4endl;
213 if (useGivenDaughterMass) { 213 if (useGivenDaughterMass) {
214 G4cout << "Daughter Mass is given." << 214 G4cout << "Daughter Mass is given." << G4endl;
215 } 215 }
216 } 216 }
217 #endif 217 #endif
218 G4Exception("G4PhaseSpaceDecayChannel::Two 218 G4Exception("G4PhaseSpaceDecayChannel::TwoBodyDecayIt()", "PART112", JustWarning,
219 "Cannot create decay products: 219 "Cannot create decay products: sum of daughter mass is \
220 larger than parent mass!"); 220 larger than parent mass!");
221 return products; 221 return products;
222 } 222 }
223 223
224 // calculate daughter momentum 224 // calculate daughter momentum
225 G4double daughtermomentum = Pmx(parentmass, 225 G4double daughtermomentum = Pmx(parentmass, daughtermass[0], daughtermass[1]);
226 226
227 G4double costheta = 2. * G4UniformRand() - 1 227 G4double costheta = 2. * G4UniformRand() - 1.0;
228 G4double sintheta = std::sqrt((1.0 - costhet 228 G4double sintheta = std::sqrt((1.0 - costheta) * (1.0 + costheta));
229 G4double phi = twopi * G4UniformRand() * rad 229 G4double phi = twopi * G4UniformRand() * rad;
230 G4ThreeVector direction(sintheta * std::cos( 230 G4ThreeVector direction(sintheta * std::cos(phi), sintheta * std::sin(phi), costheta);
231 231
232 // create daughter G4DynamicParticle 232 // create daughter G4DynamicParticle
233 G4double Ekin = std::sqrt(daughtermomentum * 233 G4double Ekin = std::sqrt(daughtermomentum * daughtermomentum + daughtermass[0] * daughtermass[0])
234 - daughtermass[0]; 234 - daughtermass[0];
235 auto daughterparticle = 235 auto daughterparticle =
236 new G4DynamicParticle(G4MT_daughters[0], d 236 new G4DynamicParticle(G4MT_daughters[0], direction, Ekin, daughtermass[0]);
237 products->PushProducts(daughterparticle); 237 products->PushProducts(daughterparticle);
238 Ekin = std::sqrt(daughtermomentum * daughter 238 Ekin = std::sqrt(daughtermomentum * daughtermomentum + daughtermass[1] * daughtermass[1])
239 - daughtermass[1]; 239 - daughtermass[1];
240 daughterparticle = 240 daughterparticle =
241 new G4DynamicParticle(G4MT_daughters[1], - 241 new G4DynamicParticle(G4MT_daughters[1], -1.0 * direction, Ekin, daughtermass[1]);
242 products->PushProducts(daughterparticle); 242 products->PushProducts(daughterparticle);
243 243
244 #ifdef G4VERBOSE 244 #ifdef G4VERBOSE
245 if (GetVerboseLevel() > 1) { 245 if (GetVerboseLevel() > 1) {
246 G4cout << "G4PhaseSpaceDecayChannel::TwoBo 246 G4cout << "G4PhaseSpaceDecayChannel::TwoBodyDecayIt() -";
247 G4cout << " Create decay products in rest 247 G4cout << " Create decay products in rest frame " << G4endl;
248 products->DumpInfo(); 248 products->DumpInfo();
249 } 249 }
250 #endif 250 #endif
251 return products; 251 return products;
252 } 252 }
253 253
254 G4DecayProducts* G4PhaseSpaceDecayChannel::Thr 254 G4DecayProducts* G4PhaseSpaceDecayChannel::ThreeBodyDecayIt()
255 { 255 {
256 // Algorithm of this code originally written 256 // Algorithm of this code originally written in GDECA3 of GEANT3
257 257
258 #ifdef G4VERBOSE 258 #ifdef G4VERBOSE
259 if (GetVerboseLevel() > 1) G4cout << "G4Phas 259 if (GetVerboseLevel() > 1) G4cout << "G4PhaseSpaceDecayChannel::ThreeBodyDecayIt()" << G4endl;
260 #endif 260 #endif
261 // parent mass 261 // parent mass
262 G4double parentmass = current_parent_mass.Ge 262 G4double parentmass = current_parent_mass.Get();
263 // daughters'mass 263 // daughters'mass
264 G4double daughtermass[3], daughterwidth[3]; 264 G4double daughtermass[3], daughterwidth[3];
265 G4double sumofdaughtermass = 0.0; 265 G4double sumofdaughtermass = 0.0;
266 G4double sumofdaughterwidthsq = 0.0; 266 G4double sumofdaughterwidthsq = 0.0;
267 G4bool withWidth = false; 267 G4bool withWidth = false;
268 for (G4int index = 0; index < 3; ++index) { 268 for (G4int index = 0; index < 3; ++index) {
269 daughtermass[index] = G4MT_daughters_mass[ 269 daughtermass[index] = G4MT_daughters_mass[index];
270 sumofdaughtermass += daughtermass[index]; 270 sumofdaughtermass += daughtermass[index];
271 daughterwidth[index] = G4MT_daughters_widt 271 daughterwidth[index] = G4MT_daughters_width[index];
272 sumofdaughterwidthsq += daughterwidth[inde 272 sumofdaughterwidthsq += daughterwidth[index] * daughterwidth[index];
273 withWidth = withWidth || (daughterwidth[in 273 withWidth = withWidth || (daughterwidth[index] > 1.0e-3 * daughtermass[index]);
274 } 274 }
275 275
276 // create parent G4DynamicParticle at rest 276 // create parent G4DynamicParticle at rest
277 G4ThreeVector dummy; 277 G4ThreeVector dummy;
278 auto parentparticle = new G4DynamicParticle( 278 auto parentparticle = new G4DynamicParticle(G4MT_parent, dummy, 0.0, parentmass);
279 279
280 // create G4Decayproducts 280 // create G4Decayproducts
281 auto products = new G4DecayProducts(*parentp 281 auto products = new G4DecayProducts(*parentparticle);
282 delete parentparticle; 282 delete parentparticle;
283 283
284 if (!useGivenDaughterMass) { 284 if (!useGivenDaughterMass) {
285 if (withWidth) { 285 if (withWidth) {
286 G4double maxDev = (parentmass - sumofdau 286 G4double maxDev = (parentmass - sumofdaughtermass) / std::sqrt(sumofdaughterwidthsq);
287 if (maxDev <= -1.0 * rangeMass) { 287 if (maxDev <= -1.0 * rangeMass) {
288 #ifdef G4VERBOSE 288 #ifdef G4VERBOSE
289 if (GetVerboseLevel() > 0) { 289 if (GetVerboseLevel() > 0) {
290 G4cout << "G4PhaseSpaceDecayChannel: 290 G4cout << "G4PhaseSpaceDecayChannel::ThreeBodyDecayIt()" << G4endl
291 << "Sum of daughter mass is l 291 << "Sum of daughter mass is larger than parent mass!" << G4endl;
292 G4cout << "Parent :" << G4MT_parent- 292 G4cout << "Parent :" << G4MT_parent->GetParticleName() << " "
293 << current_parent_mass.Get() 293 << current_parent_mass.Get() / GeV << G4endl;
294 G4cout << "Daughter 1 :" << G4MT_dau 294 G4cout << "Daughter 1 :" << G4MT_daughters[0]->GetParticleName() << " "
295 << daughtermass[0] / GeV << G 295 << daughtermass[0] / GeV << G4endl;
296 G4cout << "Daughter 2:" << G4MT_daug 296 G4cout << "Daughter 2:" << G4MT_daughters[1]->GetParticleName() << " "
297 << daughtermass[1] / GeV << G 297 << daughtermass[1] / GeV << G4endl;
298 G4cout << "Daughter 3:" << G4MT_daug 298 G4cout << "Daughter 3:" << G4MT_daughters[2]->GetParticleName() << " "
299 << daughtermass[2] / GeV << G 299 << daughtermass[2] / GeV << G4endl;
300 } 300 }
301 #endif 301 #endif
302 G4Exception("G4PhaseSpaceDecayChannel: 302 G4Exception("G4PhaseSpaceDecayChannel::ThreeBodyDecayIt()", "PART112", JustWarning,
303 "Cannot create decay produ 303 "Cannot create decay products: sum of daughter mass \
304 is larger than parent mas 304 is larger than parent mass!");
305 return products; 305 return products;
306 } 306 }
307 G4double dm1 = daughtermass[0]; 307 G4double dm1 = daughtermass[0];
308 if (daughterwidth[0] > 0.) dm1 = Dynamic 308 if (daughterwidth[0] > 0.) dm1 = DynamicalMass(daughtermass[0], daughterwidth[0], maxDev);
309 G4double dm2 = daughtermass[1]; 309 G4double dm2 = daughtermass[1];
310 if (daughterwidth[1] > 0.) dm2 = Dynamic 310 if (daughterwidth[1] > 0.) dm2 = DynamicalMass(daughtermass[1], daughterwidth[1], maxDev);
311 G4double dm3 = daughtermass[2]; 311 G4double dm3 = daughtermass[2];
312 if (daughterwidth[2] > 0.) dm3 = Dynamic 312 if (daughterwidth[2] > 0.) dm3 = DynamicalMass(daughtermass[2], daughterwidth[2], maxDev);
313 while (dm1 + dm2 + dm3 > parentmass) // 313 while (dm1 + dm2 + dm3 > parentmass) // Loop checking, 09.08.2015, K.Kurashige
314 { 314 {
315 dm1 = DynamicalMass(daughtermass[0], d 315 dm1 = DynamicalMass(daughtermass[0], daughterwidth[0], maxDev);
316 dm2 = DynamicalMass(daughtermass[1], d 316 dm2 = DynamicalMass(daughtermass[1], daughterwidth[1], maxDev);
317 dm3 = DynamicalMass(daughtermass[2], d 317 dm3 = DynamicalMass(daughtermass[2], daughterwidth[2], maxDev);
318 } 318 }
319 daughtermass[0] = dm1; 319 daughtermass[0] = dm1;
320 daughtermass[1] = dm2; 320 daughtermass[1] = dm2;
321 daughtermass[2] = dm3; 321 daughtermass[2] = dm3;
322 sumofdaughtermass = dm1 + dm2 + dm3; 322 sumofdaughtermass = dm1 + dm2 + dm3;
323 } 323 }
324 } 324 }
325 else { 325 else {
326 // use given daughter mass; 326 // use given daughter mass;
327 daughtermass[0] = givenDaughterMasses[0]; 327 daughtermass[0] = givenDaughterMasses[0];
328 daughtermass[1] = givenDaughterMasses[1]; 328 daughtermass[1] = givenDaughterMasses[1];
329 daughtermass[2] = givenDaughterMasses[2]; 329 daughtermass[2] = givenDaughterMasses[2];
330 sumofdaughtermass = daughtermass[0] + daug 330 sumofdaughtermass = daughtermass[0] + daughtermass[1] + daughtermass[2];
331 } 331 }
332 332
333 if (sumofdaughtermass > parentmass) { 333 if (sumofdaughtermass > parentmass) {
334 #ifdef G4VERBOSE 334 #ifdef G4VERBOSE
335 if (GetVerboseLevel() > 0) { 335 if (GetVerboseLevel() > 0) {
336 G4cout << "G4PhaseSpaceDecayChannel::Thr 336 G4cout << "G4PhaseSpaceDecayChannel::ThreeBodyDecayIt()" << G4endl
337 << "Sum of daughter mass is large 337 << "Sum of daughter mass is larger than parent mass!" << G4endl;
338 G4cout << "Parent :" << G4MT_parent->Get 338 G4cout << "Parent :" << G4MT_parent->GetParticleName() << " "
339 << current_parent_mass.Get() / Ge 339 << current_parent_mass.Get() / GeV << G4endl;
340 G4cout << "Daughter 1 :" << G4MT_daughte 340 G4cout << "Daughter 1 :" << G4MT_daughters[0]->GetParticleName() << " "
341 << daughtermass[0] / GeV << G4end 341 << daughtermass[0] / GeV << G4endl;
342 G4cout << "Daughter 2:" << G4MT_daughter 342 G4cout << "Daughter 2:" << G4MT_daughters[1]->GetParticleName() << " "
343 << daughtermass[1] / GeV << G4end 343 << daughtermass[1] / GeV << G4endl;
344 G4cout << "Daughter 3:" << G4MT_daughter 344 G4cout << "Daughter 3:" << G4MT_daughters[2]->GetParticleName() << " "
345 << daughtermass[2] / GeV << G4end 345 << daughtermass[2] / GeV << G4endl;
346 } 346 }
347 if (useGivenDaughterMass) { 347 if (useGivenDaughterMass) {
348 G4cout << "Daughter Mass is given." << G 348 G4cout << "Daughter Mass is given." << G4endl;
349 } 349 }
350 #endif 350 #endif
351 G4Exception("G4PhaseSpaceDecayChannel::Thr 351 G4Exception("G4PhaseSpaceDecayChannel::ThreeBodyDecayIt", "PART112", JustWarning,
352 "Can not create decay products 352 "Can not create decay products: sum of daughter mass \
353 is larger than parent mass!") 353 is larger than parent mass!");
354 return products; 354 return products;
355 } 355 }
356 356
357 // calculate daughter momentum 357 // calculate daughter momentum
358 // Generate two 358 // Generate two
359 G4double rd1, rd2, rd; 359 G4double rd1, rd2, rd;
360 G4double daughtermomentum[3]; 360 G4double daughtermomentum[3];
361 G4double momentummax = 0.0, momentumsum = 0. 361 G4double momentummax = 0.0, momentumsum = 0.0;
362 G4double energy; 362 G4double energy;
363 const std::size_t MAX_LOOP = 10000; 363 const std::size_t MAX_LOOP = 10000;
364 364
365 for (std::size_t loop_counter = 0; loop_coun 365 for (std::size_t loop_counter = 0; loop_counter < MAX_LOOP; ++loop_counter) {
366 rd1 = G4UniformRand(); 366 rd1 = G4UniformRand();
367 rd2 = G4UniformRand(); 367 rd2 = G4UniformRand();
368 if (rd2 > rd1) { 368 if (rd2 > rd1) {
369 rd = rd1; 369 rd = rd1;
370 rd1 = rd2; 370 rd1 = rd2;
371 rd2 = rd; 371 rd2 = rd;
372 } 372 }
373 momentummax = 0.0; 373 momentummax = 0.0;
374 momentumsum = 0.0; 374 momentumsum = 0.0;
375 // daughter 0 375 // daughter 0
376 energy = rd2 * (parentmass - sumofdaughter 376 energy = rd2 * (parentmass - sumofdaughtermass);
377 daughtermomentum[0] = std::sqrt(energy * e 377 daughtermomentum[0] = std::sqrt(energy * energy + 2.0 * energy * daughtermass[0]);
378 if (daughtermomentum[0] > momentummax) mom 378 if (daughtermomentum[0] > momentummax) momentummax = daughtermomentum[0];
379 momentumsum += daughtermomentum[0]; 379 momentumsum += daughtermomentum[0];
380 // daughter 1 380 // daughter 1
381 energy = (1. - rd1) * (parentmass - sumofd 381 energy = (1. - rd1) * (parentmass - sumofdaughtermass);
382 daughtermomentum[1] = std::sqrt(energy * e 382 daughtermomentum[1] = std::sqrt(energy * energy + 2.0 * energy * daughtermass[1]);
383 if (daughtermomentum[1] > momentummax) mom 383 if (daughtermomentum[1] > momentummax) momentummax = daughtermomentum[1];
384 momentumsum += daughtermomentum[1]; 384 momentumsum += daughtermomentum[1];
385 // daughter 2 385 // daughter 2
386 energy = (rd1 - rd2) * (parentmass - sumof 386 energy = (rd1 - rd2) * (parentmass - sumofdaughtermass);
387 daughtermomentum[2] = std::sqrt(energy * e 387 daughtermomentum[2] = std::sqrt(energy * energy + 2.0 * energy * daughtermass[2]);
388 if (daughtermomentum[2] > momentummax) mom 388 if (daughtermomentum[2] > momentummax) momentummax = daughtermomentum[2];
389 momentumsum += daughtermomentum[2]; 389 momentumsum += daughtermomentum[2];
390 if (momentummax <= momentumsum - momentumm 390 if (momentummax <= momentumsum - momentummax) break;
391 } 391 }
392 392
393 // output message 393 // output message
394 #ifdef G4VERBOSE 394 #ifdef G4VERBOSE
395 if (GetVerboseLevel() > 1) { 395 if (GetVerboseLevel() > 1) {
396 G4cout << " daughter 0:" << daughtermo 396 G4cout << " daughter 0:" << daughtermomentum[0] / GeV << "[GeV/c]" << G4endl;
397 G4cout << " daughter 1:" << daughtermo 397 G4cout << " daughter 1:" << daughtermomentum[1] / GeV << "[GeV/c]" << G4endl;
398 G4cout << " daughter 2:" << daughtermo 398 G4cout << " daughter 2:" << daughtermomentum[2] / GeV << "[GeV/c]" << G4endl;
399 G4cout << " momentum sum:" << momentumsu 399 G4cout << " momentum sum:" << momentumsum / GeV << "[GeV/c]" << G4endl;
400 } 400 }
401 #endif 401 #endif
402 402
403 // create daughter G4DynamicParticle 403 // create daughter G4DynamicParticle
404 G4double costheta, sintheta, phi, sinphi, co 404 G4double costheta, sintheta, phi, sinphi, cosphi;
405 G4double costhetan, sinthetan, phin, sinphin 405 G4double costhetan, sinthetan, phin, sinphin, cosphin;
406 costheta = 2. * G4UniformRand() - 1.0; 406 costheta = 2. * G4UniformRand() - 1.0;
407 sintheta = std::sqrt((1.0 - costheta) * (1.0 407 sintheta = std::sqrt((1.0 - costheta) * (1.0 + costheta));
408 phi = twopi * G4UniformRand() * rad; 408 phi = twopi * G4UniformRand() * rad;
409 sinphi = std::sin(phi); 409 sinphi = std::sin(phi);
410 cosphi = std::cos(phi); 410 cosphi = std::cos(phi);
411 411
412 G4ThreeVector direction0(sintheta * cosphi, 412 G4ThreeVector direction0(sintheta * cosphi, sintheta * sinphi, costheta);
413 G4double Ekin = 413 G4double Ekin =
414 std::sqrt(daughtermomentum[0] * daughtermo 414 std::sqrt(daughtermomentum[0] * daughtermomentum[0] + daughtermass[0] * daughtermass[0])
415 - daughtermass[0]; 415 - daughtermass[0];
416 auto daughterparticle = 416 auto daughterparticle =
417 new G4DynamicParticle(G4MT_daughters[0], d 417 new G4DynamicParticle(G4MT_daughters[0], direction0, Ekin, daughtermass[0]);
418 products->PushProducts(daughterparticle); 418 products->PushProducts(daughterparticle);
419 419
420 costhetan = (daughtermomentum[1] * daughterm 420 costhetan = (daughtermomentum[1] * daughtermomentum[1] - daughtermomentum[2] * daughtermomentum[2]
421 - daughtermomentum[0] * daughte 421 - daughtermomentum[0] * daughtermomentum[0])
422 / (2.0 * daughtermomentum[2] * d 422 / (2.0 * daughtermomentum[2] * daughtermomentum[0]);
423 sinthetan = std::sqrt((1.0 - costhetan) * (1 423 sinthetan = std::sqrt((1.0 - costhetan) * (1.0 + costhetan));
424 phin = twopi * G4UniformRand() * rad; 424 phin = twopi * G4UniformRand() * rad;
425 sinphin = std::sin(phin); 425 sinphin = std::sin(phin);
426 cosphin = std::cos(phin); 426 cosphin = std::cos(phin);
427 G4ThreeVector direction2; 427 G4ThreeVector direction2;
428 direction2.setX(sinthetan * cosphin * costhe 428 direction2.setX(sinthetan * cosphin * costheta * cosphi - sinthetan * sinphin * sinphi
429 + costhetan * sintheta * cos 429 + costhetan * sintheta * cosphi);
430 direction2.setY(sinthetan * cosphin * costhe 430 direction2.setY(sinthetan * cosphin * costheta * sinphi + sinthetan * sinphin * cosphi
431 + costhetan * sintheta * sin 431 + costhetan * sintheta * sinphi);
432 direction2.setZ(-sinthetan * cosphin * sinth 432 direction2.setZ(-sinthetan * cosphin * sintheta + costhetan * costheta);
433 G4ThreeVector pmom = daughtermomentum[2] * d 433 G4ThreeVector pmom = daughtermomentum[2] * direction2 / direction2.mag();
434 Ekin = std::sqrt(pmom.mag2() + daughtermass[ 434 Ekin = std::sqrt(pmom.mag2() + daughtermass[2] * daughtermass[2]) - daughtermass[2];
435 daughterparticle = 435 daughterparticle =
436 new G4DynamicParticle(G4MT_daughters[2], p 436 new G4DynamicParticle(G4MT_daughters[2], pmom / pmom.mag(), Ekin, daughtermass[2]);
437 products->PushProducts(daughterparticle); 437 products->PushProducts(daughterparticle);
438 438
439 pmom = (direction0 * daughtermomentum[0] + d 439 pmom = (direction0 * daughtermomentum[0] + direction2 * (daughtermomentum[2] / direction2.mag()))
440 * (-1.0); 440 * (-1.0);
441 Ekin = std::sqrt(pmom.mag2() + daughtermass[ 441 Ekin = std::sqrt(pmom.mag2() + daughtermass[1] * daughtermass[1]) - daughtermass[1];
442 daughterparticle = 442 daughterparticle =
443 new G4DynamicParticle(G4MT_daughters[1], p 443 new G4DynamicParticle(G4MT_daughters[1], pmom / pmom.mag(), Ekin, daughtermass[1]);
444 products->PushProducts(daughterparticle); 444 products->PushProducts(daughterparticle);
445 445
446 #ifdef G4VERBOSE 446 #ifdef G4VERBOSE
447 if (GetVerboseLevel() > 1) { 447 if (GetVerboseLevel() > 1) {
448 G4cout << "G4PhaseSpaceDecayChannel::Three 448 G4cout << "G4PhaseSpaceDecayChannel::ThreeBodyDecayIt -";
449 G4cout << " create decay products in rest 449 G4cout << " create decay products in rest frame " << G4endl;
450 products->DumpInfo(); 450 products->DumpInfo();
451 } 451 }
452 #endif 452 #endif
453 return products; 453 return products;
454 } 454 }
455 455
456 G4DecayProducts* G4PhaseSpaceDecayChannel::Man 456 G4DecayProducts* G4PhaseSpaceDecayChannel::ManyBodyDecayIt()
457 { 457 {
458 // Algorithm of this code originally written 458 // Algorithm of this code originally written in FORTRAN by M.Asai
459 // ***************************************** 459 // **************************************************************
460 // NBODY - N-body phase space Monte-Carlo ge 460 // NBODY - N-body phase space Monte-Carlo generator
461 // Makoto Asai - Hiroshima Institute of Tech 461 // Makoto Asai - Hiroshima Institute of Technology
462 // Revised release : 19/Apr/1995 462 // Revised release : 19/Apr/1995
463 463
464 G4int index, index2; 464 G4int index, index2;
465 465
466 #ifdef G4VERBOSE 466 #ifdef G4VERBOSE
467 if (GetVerboseLevel() > 1) G4cout << "G4Phas 467 if (GetVerboseLevel() > 1) G4cout << "G4PhaseSpaceDecayChannel::ManyBodyDecayIt()" << G4endl;
468 #endif 468 #endif
469 469
470 // parent mass 470 // parent mass
471 G4double parentmass = current_parent_mass.Ge 471 G4double parentmass = current_parent_mass.Get();
472 472
473 // parent particle 473 // parent particle
474 G4ThreeVector dummy; 474 G4ThreeVector dummy;
475 auto parentparticle = new G4DynamicParticle( 475 auto parentparticle = new G4DynamicParticle(G4MT_parent, dummy, 0.0, parentmass);
476 476
477 // create G4Decayproducts 477 // create G4Decayproducts
478 auto products = new G4DecayProducts(*parentp 478 auto products = new G4DecayProducts(*parentparticle);
479 delete parentparticle; 479 delete parentparticle;
480 480
481 // daughters'mass 481 // daughters'mass
482 auto daughtermass = new G4double[numberOfDau 482 auto daughtermass = new G4double[numberOfDaughters];
483 483
484 G4double sumofdaughtermass = 0.0; 484 G4double sumofdaughtermass = 0.0;
485 for (index = 0; index < numberOfDaughters; + 485 for (index = 0; index < numberOfDaughters; ++index) {
486 if (!useGivenDaughterMass) { 486 if (!useGivenDaughterMass) {
487 daughtermass[index] = G4MT_daughters_mas 487 daughtermass[index] = G4MT_daughters_mass[index];
488 } 488 }
489 else { 489 else {
490 daughtermass[index] = givenDaughterMasse 490 daughtermass[index] = givenDaughterMasses[index];
491 } 491 }
492 sumofdaughtermass += daughtermass[index]; 492 sumofdaughtermass += daughtermass[index];
493 } 493 }
494 if (sumofdaughtermass > parentmass) { 494 if (sumofdaughtermass > parentmass) {
495 #ifdef G4VERBOSE 495 #ifdef G4VERBOSE
496 if (GetVerboseLevel() > 0) { 496 if (GetVerboseLevel() > 0) {
497 G4cout << "G4PhaseSpaceDecayChannel::Man 497 G4cout << "G4PhaseSpaceDecayChannel::ManyBodyDecayIt()" << G4endl
498 << "Sum of daughter mass is large 498 << "Sum of daughter mass is larger than parent mass!" << G4endl;
499 G4cout << "Parent :" << G4MT_parent->Get 499 G4cout << "Parent :" << G4MT_parent->GetParticleName() << " "
500 << current_parent_mass.Get() / Ge 500 << current_parent_mass.Get() / GeV << G4endl;
501 G4cout << "Daughter 1 :" << G4MT_daughte 501 G4cout << "Daughter 1 :" << G4MT_daughters[0]->GetParticleName() << " "
502 << daughtermass[0] / GeV << G4end 502 << daughtermass[0] / GeV << G4endl;
503 G4cout << "Daughter 2:" << G4MT_daughter 503 G4cout << "Daughter 2:" << G4MT_daughters[1]->GetParticleName() << " "
504 << daughtermass[1] / GeV << G4end 504 << daughtermass[1] / GeV << G4endl;
505 G4cout << "Daughter 3:" << G4MT_daughter 505 G4cout << "Daughter 3:" << G4MT_daughters[2]->GetParticleName() << " "
506 << daughtermass[2] / GeV << G4end 506 << daughtermass[2] / GeV << G4endl;
507 G4cout << "Daughter 4:" << G4MT_daughter 507 G4cout << "Daughter 4:" << G4MT_daughters[3]->GetParticleName() << " "
508 << daughtermass[3] / GeV << G4end 508 << daughtermass[3] / GeV << G4endl;
509 G4cout << "Daughter 5:" << G4MT_daughter 509 G4cout << "Daughter 5:" << G4MT_daughters[4]->GetParticleName() << " "
510 << daughtermass[4] / GeV << G4end 510 << daughtermass[4] / GeV << G4endl;
511 } 511 }
512 #endif 512 #endif
513 G4Exception("G4PhaseSpaceDecayChannel::Man 513 G4Exception("G4PhaseSpaceDecayChannel::ManyBodyDecayIt()", "PART112", JustWarning,
514 "Can not create decay products 514 "Can not create decay products: sum of daughter mass \
515 is larger than parent mass!") 515 is larger than parent mass!");
516 delete[] daughtermass; 516 delete[] daughtermass;
517 return products; 517 return products;
518 } 518 }
519 519
520 // Calculate daughter momentum 520 // Calculate daughter momentum
521 auto daughtermomentum = new G4double[numberO 521 auto daughtermomentum = new G4double[numberOfDaughters];
522 G4ThreeVector direction; 522 G4ThreeVector direction;
523 G4DynamicParticle** daughterparticle; 523 G4DynamicParticle** daughterparticle;
524 auto sm = new G4double[numberOfDaughters]; 524 auto sm = new G4double[numberOfDaughters];
525 G4double tmas; 525 G4double tmas;
526 G4double weight = 1.0; 526 G4double weight = 1.0;
527 G4int numberOfTry = 0; 527 G4int numberOfTry = 0;
528 const std::size_t MAX_LOOP = 10000; 528 const std::size_t MAX_LOOP = 10000;
529 529
530 for (std::size_t loop_counter = 0; loop_coun 530 for (std::size_t loop_counter = 0; loop_counter < MAX_LOOP; ++loop_counter) {
531 // Generate rundom number in descending or 531 // Generate rundom number in descending order
532 G4double temp; 532 G4double temp;
533 auto rd = new G4double[numberOfDaughters]; 533 auto rd = new G4double[numberOfDaughters];
534 rd[0] = 1.0; 534 rd[0] = 1.0;
535 for (index = 1; index < numberOfDaughters 535 for (index = 1; index < numberOfDaughters - 1; ++index) {
536 rd[index] = G4UniformRand(); 536 rd[index] = G4UniformRand();
537 } 537 }
538 rd[numberOfDaughters - 1] = 0.0; 538 rd[numberOfDaughters - 1] = 0.0;
539 for (index = 1; index < numberOfDaughters 539 for (index = 1; index < numberOfDaughters - 1; ++index) {
540 for (index2 = index + 1; index2 < number 540 for (index2 = index + 1; index2 < numberOfDaughters; ++index2) {
541 if (rd[index] < rd[index2]) { 541 if (rd[index] < rd[index2]) {
542 temp = rd[index]; 542 temp = rd[index];
543 rd[index] = rd[index2]; 543 rd[index] = rd[index2];
544 rd[index2] = temp; 544 rd[index2] = temp;
545 } 545 }
546 } 546 }
547 } 547 }
548 548
549 // calculate virtual mass 549 // calculate virtual mass
550 tmas = parentmass - sumofdaughtermass; 550 tmas = parentmass - sumofdaughtermass;
551 temp = sumofdaughtermass; 551 temp = sumofdaughtermass;
552 for (index = 0; index < numberOfDaughters; 552 for (index = 0; index < numberOfDaughters; ++index) {
553 sm[index] = rd[index] * tmas + temp; 553 sm[index] = rd[index] * tmas + temp;
554 temp -= daughtermass[index]; 554 temp -= daughtermass[index];
555 if (GetVerboseLevel() > 1) { 555 if (GetVerboseLevel() > 1) {
556 G4cout << index << " rundom number:" 556 G4cout << index << " rundom number:" << rd[index];
557 G4cout << " virtual mass:" << sm[ind 557 G4cout << " virtual mass:" << sm[index] / GeV << "[GeV/c/c]" << G4endl;
558 } 558 }
559 } 559 }
560 delete[] rd; 560 delete[] rd;
561 561
562 // Calculate daughter momentum 562 // Calculate daughter momentum
563 weight = 1.0; 563 weight = 1.0;
564 G4bool smOK = true; 564 G4bool smOK = true;
565 for (index = 0; index < numberOfDaughters 565 for (index = 0; index < numberOfDaughters - 1 && smOK; ++index) {
566 smOK = (sm[index] - daughtermass[index] 566 smOK = (sm[index] - daughtermass[index] - sm[index + 1] >= 0.);
567 } 567 }
568 if (!smOK) continue; 568 if (!smOK) continue;
569 569
570 index = numberOfDaughters - 1; 570 index = numberOfDaughters - 1;
571 daughtermomentum[index] = Pmx(sm[index - 1 571 daughtermomentum[index] = Pmx(sm[index - 1], daughtermass[index - 1], sm[index]);
572 #ifdef G4VERBOSE 572 #ifdef G4VERBOSE
573 if (GetVerboseLevel() > 1) { 573 if (GetVerboseLevel() > 1) {
574 G4cout << " daughter " << index << " 574 G4cout << " daughter " << index << ":" << *daughters_name[index];
575 G4cout << " momentum:" << daughtermoment 575 G4cout << " momentum:" << daughtermomentum[index] / GeV << "[GeV/c]" << G4endl;
576 } 576 }
577 #endif 577 #endif
578 for (index = numberOfDaughters - 2; index 578 for (index = numberOfDaughters - 2; index >= 0; --index) {
579 // calculate 579 // calculate
580 daughtermomentum[index] = Pmx(sm[index], 580 daughtermomentum[index] = Pmx(sm[index], daughtermass[index], sm[index + 1]);
581 if (daughtermomentum[index] < 0.0) { 581 if (daughtermomentum[index] < 0.0) {
582 // !!! illegal momentum !!! 582 // !!! illegal momentum !!!
583 #ifdef G4VERBOSE 583 #ifdef G4VERBOSE
584 if (GetVerboseLevel() > 0) { 584 if (GetVerboseLevel() > 0) {
585 G4cout << "G4PhaseSpaceDecayChannel: 585 G4cout << "G4PhaseSpaceDecayChannel::ManyBodyDecayIt()" << G4endl;
586 G4cout << " Cannot calculate dau 586 G4cout << " Cannot calculate daughter momentum " << G4endl;
587 G4cout << " parent:" << *parent_ 587 G4cout << " parent:" << *parent_name;
588 G4cout << " mass:" << parentmass / G 588 G4cout << " mass:" << parentmass / GeV << "[GeV/c/c]" << G4endl;
589 G4cout << " daughter " << index 589 G4cout << " daughter " << index << ":" << *daughters_name[index];
590 G4cout << " mass:" << daughtermass[i 590 G4cout << " mass:" << daughtermass[index] / GeV << "[GeV/c/c]";
591 G4cout << " mass:" << daughtermoment 591 G4cout << " mass:" << daughtermomentum[index] / GeV << "[GeV/c]" << G4endl;
592 if (useGivenDaughterMass) { 592 if (useGivenDaughterMass) {
593 G4cout << "Daughter Mass is given. 593 G4cout << "Daughter Mass is given." << G4endl;
594 } 594 }
595 } 595 }
596 #endif 596 #endif
597 delete[] sm; 597 delete[] sm;
598 delete[] daughtermass; 598 delete[] daughtermass;
599 delete[] daughtermomentum; 599 delete[] daughtermomentum;
600 delete products; 600 delete products;
601 G4Exception("G4PhaseSpaceDecayChannel: 601 G4Exception("G4PhaseSpaceDecayChannel::ManyBodyDecayIt()", "PART112", JustWarning,
602 "Can not create decay prod 602 "Can not create decay products: sum of daughter mass \
603 is larger than parent mas 603 is larger than parent mass");
604 return nullptr; // Error detection 604 return nullptr; // Error detection
605 } 605 }
606 606
607 // calculate weight of this events 607 // calculate weight of this events
608 weight *= daughtermomentum[index] / sm[i 608 weight *= daughtermomentum[index] / sm[index];
609 #ifdef G4VERBOSE 609 #ifdef G4VERBOSE
610 if (GetVerboseLevel() > 1) { 610 if (GetVerboseLevel() > 1) {
611 G4cout << " daughter " << index << 611 G4cout << " daughter " << index << ":" << *daughters_name[index];
612 G4cout << " momentum:" << daughtermome 612 G4cout << " momentum:" << daughtermomentum[index] / GeV << "[GeV/c]" << G4endl;
613 } 613 }
614 #endif 614 #endif
615 } 615 }
616 616
617 #ifdef G4VERBOSE 617 #ifdef G4VERBOSE
618 if (GetVerboseLevel() > 1) { 618 if (GetVerboseLevel() > 1) {
619 G4cout << " weight: " << weight << G4 619 G4cout << " weight: " << weight << G4endl;
620 } 620 }
621 #endif 621 #endif
622 622
623 // exit if number of Try exceeds 100 623 // exit if number of Try exceeds 100
624 if (++numberOfTry > 100) { 624 if (++numberOfTry > 100) {
625 #ifdef G4VERBOSE 625 #ifdef G4VERBOSE
626 if (GetVerboseLevel() > 0) { 626 if (GetVerboseLevel() > 0) {
627 G4cout << "G4PhaseSpaceDecayChannel::M 627 G4cout << "G4PhaseSpaceDecayChannel::ManyBodyDecayIt()" << G4endl;
628 G4cout << "Cannot determine Decay Kine 628 G4cout << "Cannot determine Decay Kinematics " << G4endl;
629 G4cout << "parent : " << *parent_name 629 G4cout << "parent : " << *parent_name << G4endl;
630 G4cout << "daughters : "; 630 G4cout << "daughters : ";
631 for (index = 0; index < numberOfDaught 631 for (index = 0; index < numberOfDaughters; ++index) {
632 G4cout << *daughters_name[index] << 632 G4cout << *daughters_name[index] << " , ";
633 } 633 }
634 G4cout << G4endl; 634 G4cout << G4endl;
635 } 635 }
636 #endif 636 #endif
637 G4Exception("G4PhaseSpaceDecayChannel::M 637 G4Exception("G4PhaseSpaceDecayChannel::ManyBodyDecayIt()", "PART113", JustWarning,
638 "Cannot decay: Decay Kinemat 638 "Cannot decay: Decay Kinematics cannot be calculated");
639 639
640 delete[] sm; 640 delete[] sm;
641 delete[] daughtermass; 641 delete[] daughtermass;
642 delete[] daughtermomentum; 642 delete[] daughtermomentum;
643 delete products; 643 delete products;
644 return nullptr; // Error detection 644 return nullptr; // Error detection
645 } 645 }
646 if (weight < G4UniformRand()) break; 646 if (weight < G4UniformRand()) break;
647 } 647 }
648 648
649 #ifdef G4VERBOSE 649 #ifdef G4VERBOSE
650 if (GetVerboseLevel() > 1) { 650 if (GetVerboseLevel() > 1) {
651 G4cout << "Start calculation of daughters 651 G4cout << "Start calculation of daughters momentum vector " << G4endl;
652 } 652 }
653 #endif 653 #endif
654 654
655 G4double costheta, sintheta, phi; 655 G4double costheta, sintheta, phi;
656 G4double beta; 656 G4double beta;
657 daughterparticle = new G4DynamicParticle*[nu 657 daughterparticle = new G4DynamicParticle*[numberOfDaughters];
658 658
659 index = numberOfDaughters - 2; 659 index = numberOfDaughters - 2;
660 costheta = 2. * G4UniformRand() - 1.0; 660 costheta = 2. * G4UniformRand() - 1.0;
661 sintheta = std::sqrt((1.0 - costheta) * (1.0 661 sintheta = std::sqrt((1.0 - costheta) * (1.0 + costheta));
662 phi = twopi * G4UniformRand() * rad; 662 phi = twopi * G4UniformRand() * rad;
663 direction.setZ(costheta); 663 direction.setZ(costheta);
664 direction.setY(sintheta * std::sin(phi)); 664 direction.setY(sintheta * std::sin(phi));
665 direction.setX(sintheta * std::cos(phi)); 665 direction.setX(sintheta * std::cos(phi));
666 daughterparticle[index] = 666 daughterparticle[index] =
667 new G4DynamicParticle(G4MT_daughters[index 667 new G4DynamicParticle(G4MT_daughters[index], direction * daughtermomentum[index]);
668 daughterparticle[index + 1] = 668 daughterparticle[index + 1] =
669 new G4DynamicParticle(G4MT_daughters[index 669 new G4DynamicParticle(G4MT_daughters[index + 1], direction * (-1.0 * daughtermomentum[index]));
670 670
671 for (index = numberOfDaughters - 3; index >= 671 for (index = numberOfDaughters - 3; index >= 0; --index) {
672 // calculate momentum direction 672 // calculate momentum direction
673 costheta = 2. * G4UniformRand() - 1.0; 673 costheta = 2. * G4UniformRand() - 1.0;
674 sintheta = std::sqrt((1.0 - costheta) * (1 674 sintheta = std::sqrt((1.0 - costheta) * (1.0 + costheta));
675 phi = twopi * G4UniformRand() * rad; 675 phi = twopi * G4UniformRand() * rad;
676 direction.setZ(costheta); 676 direction.setZ(costheta);
677 direction.setY(sintheta * std::sin(phi)); 677 direction.setY(sintheta * std::sin(phi));
678 direction.setX(sintheta * std::cos(phi)); 678 direction.setX(sintheta * std::cos(phi));
679 679
680 // boost already created particles 680 // boost already created particles
681 beta = daughtermomentum[index]; 681 beta = daughtermomentum[index];
682 beta /= 682 beta /=
683 std::sqrt(daughtermomentum[index] * daug 683 std::sqrt(daughtermomentum[index] * daughtermomentum[index] + sm[index + 1] * sm[index + 1]);
684 for (index2 = index + 1; index2 < numberOf 684 for (index2 = index + 1; index2 < numberOfDaughters; ++index2) {
685 G4LorentzVector p4; 685 G4LorentzVector p4;
686 // make G4LorentzVector for secondaries 686 // make G4LorentzVector for secondaries
687 p4 = daughterparticle[index2]->Get4Momen 687 p4 = daughterparticle[index2]->Get4Momentum();
688 688
689 // boost secondaries to new frame 689 // boost secondaries to new frame
690 p4.boost(direction.x() * beta, direction 690 p4.boost(direction.x() * beta, direction.y() * beta, direction.z() * beta);
691 691
692 // change energy/momentum 692 // change energy/momentum
693 daughterparticle[index2]->Set4Momentum(p 693 daughterparticle[index2]->Set4Momentum(p4);
694 } 694 }
695 // create daughter G4DynamicParticle 695 // create daughter G4DynamicParticle
696 daughterparticle[index] = 696 daughterparticle[index] =
697 new G4DynamicParticle(G4MT_daughters[ind 697 new G4DynamicParticle(G4MT_daughters[index], direction * (-1.0 * daughtermomentum[index]));
698 } 698 }
699 699
700 // add daughters to G4Decayproducts 700 // add daughters to G4Decayproducts
701 for (index = 0; index < numberOfDaughters; + 701 for (index = 0; index < numberOfDaughters; ++index) {
702 products->PushProducts(daughterparticle[in 702 products->PushProducts(daughterparticle[index]);
703 } 703 }
704 704
705 #ifdef G4VERBOSE 705 #ifdef G4VERBOSE
706 if (GetVerboseLevel() > 1) { 706 if (GetVerboseLevel() > 1) {
707 G4cout << "G4PhaseSpaceDecayChannel::ManyB 707 G4cout << "G4PhaseSpaceDecayChannel::ManyBodyDecayIt() -";
708 G4cout << " create decay products in rest 708 G4cout << " create decay products in rest frame " << G4endl;
709 products->DumpInfo(); 709 products->DumpInfo();
710 } 710 }
711 #endif 711 #endif
712 712
713 delete[] daughterparticle; 713 delete[] daughterparticle;
714 delete[] daughtermomentum; 714 delete[] daughtermomentum;
715 delete[] daughtermass; 715 delete[] daughtermass;
716 delete[] sm; 716 delete[] sm;
717 717
718 return products; 718 return products;
719 } 719 }
720 720
721 G4bool G4PhaseSpaceDecayChannel::SetDaughterMa 721 G4bool G4PhaseSpaceDecayChannel::SetDaughterMasses(G4double masses[])
722 { 722 {
723 for (G4int idx = 0; idx < numberOfDaughters; 723 for (G4int idx = 0; idx < numberOfDaughters; ++idx) {
724 givenDaughterMasses[idx] = masses[idx]; 724 givenDaughterMasses[idx] = masses[idx];
725 } 725 }
726 useGivenDaughterMass = true; 726 useGivenDaughterMass = true;
727 return useGivenDaughterMass; 727 return useGivenDaughterMass;
728 } 728 }
729 729
730 G4bool G4PhaseSpaceDecayChannel::SampleDaughte 730 G4bool G4PhaseSpaceDecayChannel::SampleDaughterMasses()
731 { 731 {
732 useGivenDaughterMass = false; 732 useGivenDaughterMass = false;
733 return useGivenDaughterMass; 733 return useGivenDaughterMass;
734 } 734 }
735 735
736 G4bool G4PhaseSpaceDecayChannel::IsOKWithParen 736 G4bool G4PhaseSpaceDecayChannel::IsOKWithParentMass(G4double parentMass)
737 { 737 {
738 if (!useGivenDaughterMass) return G4VDecayCh 738 if (!useGivenDaughterMass) return G4VDecayChannel::IsOKWithParentMass(parentMass);
739 739
740 CheckAndFillParent(); 740 CheckAndFillParent();
741 CheckAndFillDaughters(); 741 CheckAndFillDaughters();
742 742
743 G4double sumOfDaughterMassMin = 0.0; 743 G4double sumOfDaughterMassMin = 0.0;
744 for (G4int index = 0; index < numberOfDaught 744 for (G4int index = 0; index < numberOfDaughters; ++index) {
745 sumOfDaughterMassMin += givenDaughterMasse 745 sumOfDaughterMassMin += givenDaughterMasses[index];
746 } 746 }
747 return (parentMass >= sumOfDaughterMassMin); 747 return (parentMass >= sumOfDaughterMassMin);
748 } 748 }
749 749
750 G4double G4PhaseSpaceDecayChannel::Pmx(G4doubl 750 G4double G4PhaseSpaceDecayChannel::Pmx(G4double e, G4double p1, G4double p2)
751 { 751 {
752 // calcurate momentum of daughter particles 752 // calcurate momentum of daughter particles in two-body decay
753 G4double ppp = (e + p1 + p2) * (e + p1 - p2) 753 G4double ppp = (e + p1 + p2) * (e + p1 - p2) * (e - p1 + p2) * (e - p1 - p2) / (4.0 * e * e);
754 if (ppp > 0) return std::sqrt(ppp); 754 if (ppp > 0) return std::sqrt(ppp);
755 return -1.; 755 return -1.;
756 } 756 }
757 757