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25 // 25 //
26 // INCL++ intra-nuclear cascade model 26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France 27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium 28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France 29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and H 30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France 31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France 32 // Davide Mancusi, CEA-Saclay, France
33 // 33 //
34 #define INCLXX_IN_GEANT4_MODE 1 34 #define INCLXX_IN_GEANT4_MODE 1
35 35
36 #include "globals.hh" 36 #include "globals.hh"
37 37
38 /** \file G4INCLNuclearPotentialIsospin.cc 38 /** \file G4INCLNuclearPotentialIsospin.cc
39 * \brief Isospin-dependent nuclear potential. 39 * \brief Isospin-dependent nuclear potential.
40 * 40 *
41 * Provides an isospin-dependent nuclear poten 41 * Provides an isospin-dependent nuclear potential.
42 * 42 *
43 * \date 28 February 2011 43 * \date 28 February 2011
44 * \author Davide Mancusi 44 * \author Davide Mancusi
45 */ 45 */
46 46
47 #include "G4INCLNuclearPotentialIsospin.hh" 47 #include "G4INCLNuclearPotentialIsospin.hh"
48 #include "G4INCLNuclearPotentialConstant.hh" 48 #include "G4INCLNuclearPotentialConstant.hh"
49 #include "G4INCLParticleTable.hh" 49 #include "G4INCLParticleTable.hh"
50 #include "G4INCLGlobals.hh" 50 #include "G4INCLGlobals.hh"
51 51
52 namespace G4INCL { 52 namespace G4INCL {
53 53
54 namespace NuclearPotential { 54 namespace NuclearPotential {
55 55
56 // Constructors 56 // Constructors
57 NuclearPotentialIsospin::NuclearPotentialI 57 NuclearPotentialIsospin::NuclearPotentialIsospin(const G4int A, const G4int Z, const G4bool aPionPotential)
58 : INuclearPotential(A, Z, aPionPotential 58 : INuclearPotential(A, Z, aPionPotential)
59 { 59 {
60 initialize(); 60 initialize();
61 } 61 }
62 62
63 // Destructor 63 // Destructor
64 NuclearPotentialIsospin::~NuclearPotential 64 NuclearPotentialIsospin::~NuclearPotentialIsospin() {}
65 65
66 void NuclearPotentialIsospin::initialize() 66 void NuclearPotentialIsospin::initialize() {
67 const G4double ZOverA = ((G4double) theZ 67 const G4double ZOverA = ((G4double) theZ) / ((G4double) theA);
68 68
69 const G4double mp = ParticleTable::getIN 69 const G4double mp = ParticleTable::getINCLMass(Proton);
70 const G4double mn = ParticleTable::getIN 70 const G4double mn = ParticleTable::getINCLMass(Neutron);
71 const G4double ml = ParticleTable::getIN 71 const G4double ml = ParticleTable::getINCLMass(Lambda);
72 72
73 const G4double theFermiMomentum = Partic 73 const G4double theFermiMomentum = ParticleTable::getFermiMomentum(theA,theZ);
74 74
75 fermiMomentum[Proton] = theFermiMomentum 75 fermiMomentum[Proton] = theFermiMomentum * Math::pow13(2.*ZOverA);
76 const G4double theProtonFermiEnergy = st 76 const G4double theProtonFermiEnergy = std::sqrt(fermiMomentum[Proton]*fermiMomentum[Proton] + mp*mp) - mp;
77 fermiEnergy[Proton] = theProtonFermiEner 77 fermiEnergy[Proton] = theProtonFermiEnergy;
78 // Use separation energies from the Part 78 // Use separation energies from the ParticleTable
79 const G4double theProtonSeparationEnergy 79 const G4double theProtonSeparationEnergy = ParticleTable::getSeparationEnergy(Proton,theA,theZ);
80 separationEnergy[Proton] = theProtonSepa 80 separationEnergy[Proton] = theProtonSeparationEnergy;
81 vProton = theProtonFermiEnergy + theProt 81 vProton = theProtonFermiEnergy + theProtonSeparationEnergy;
82 82
83 fermiMomentum[Neutron] = theFermiMomentu 83 fermiMomentum[Neutron] = theFermiMomentum * Math::pow13(2.*(1.-ZOverA));
84 const G4double theNeutronFermiEnergy = s 84 const G4double theNeutronFermiEnergy = std::sqrt(fermiMomentum[Neutron]*fermiMomentum[Neutron] + mn*mn) - mn;
85 fermiEnergy[Neutron] = theNeutronFermiEn 85 fermiEnergy[Neutron] = theNeutronFermiEnergy;
86 // Use separation energies from the Part 86 // Use separation energies from the ParticleTable
87 const G4double theNeutronSeparationEnerg 87 const G4double theNeutronSeparationEnergy = ParticleTable::getSeparationEnergy(Neutron,theA,theZ);
88 separationEnergy[Neutron] = theNeutronSe 88 separationEnergy[Neutron] = theNeutronSeparationEnergy;
89 vNeutron = theNeutronFermiEnergy + theNe 89 vNeutron = theNeutronFermiEnergy + theNeutronSeparationEnergy;
90 90
91 const G4double separationEnergyDeltaPlus 91 const G4double separationEnergyDeltaPlusPlus = 2.*theProtonSeparationEnergy - theNeutronSeparationEnergy;
92 separationEnergy[DeltaPlusPlus] = separa 92 separationEnergy[DeltaPlusPlus] = separationEnergyDeltaPlusPlus;
93 separationEnergy[DeltaPlus] = theProtonS 93 separationEnergy[DeltaPlus] = theProtonSeparationEnergy;
94 separationEnergy[DeltaZero] = theNeutron 94 separationEnergy[DeltaZero] = theNeutronSeparationEnergy;
95 const G4double separationEnergyDeltaMinu 95 const G4double separationEnergyDeltaMinus = 2.*theNeutronSeparationEnergy - theProtonSeparationEnergy;
96 separationEnergy[DeltaMinus] = separatio 96 separationEnergy[DeltaMinus] = separationEnergyDeltaMinus;
97 97
98 const G4double tinyMargin = 1E-7; 98 const G4double tinyMargin = 1E-7;
99 vDeltaPlus = vProton; 99 vDeltaPlus = vProton;
100 vDeltaZero = vNeutron; 100 vDeltaZero = vNeutron;
101 vDeltaPlusPlus = std::max(separationEner 101 vDeltaPlusPlus = std::max(separationEnergyDeltaPlusPlus + tinyMargin, 2.*vDeltaPlus - vDeltaZero);
102 vDeltaMinus = std::max(separationEnergyD 102 vDeltaMinus = std::max(separationEnergyDeltaMinus + tinyMargin, 2.*vDeltaZero - vDeltaPlus);
103 103
104 vSigmaMinus = -16.; // Repulsive potenti 104 vSigmaMinus = -16.; // Repulsive potential, from Eur. Phys.J.A. (2016) 52:21
105 vSigmaZero = -16.; // hypothesis: same 105 vSigmaZero = -16.; // hypothesis: same potential for each sigma
106 vSigmaPlus = -16.; 106 vSigmaPlus = -16.;
107 107
108 vLambda = 30.; 108 vLambda = 30.;
109 vantiProton = 100.; 109 vantiProton = 100.;
110 110
111 const G4double asy = (theA - 2.*theZ)/th 111 const G4double asy = (theA - 2.*theZ)/theA;
112 // Jose Luis Rodriguez-Sanchez et al., R 112 // Jose Luis Rodriguez-Sanchez et al., Rapid Communication PRC 98, 021602 (2018)
113 if (asy > 0.236) vLambda = 40.91; 113 if (asy > 0.236) vLambda = 40.91;
114 else if (asy > 0.133) vLambda = 56.549 - 114 else if (asy > 0.133) vLambda = 56.549 - 678.73*asy + 4905.35*asy*asy - 9789.1*asy*asy*asy;
115 115
116 const G4double theLambdaSeparationEnergy 116 const G4double theLambdaSeparationEnergy = ParticleTable::getSeparationEnergy(Lambda,theA,theZ);
117 const G4double theantiProtonSeparationEn 117 const G4double theantiProtonSeparationEnergy = ParticleTable::getSeparationEnergy(antiProton,theA,theZ);
118 118
119 separationEnergy[PiPlus] = theProtonSepa 119 separationEnergy[PiPlus] = theProtonSeparationEnergy - theNeutronSeparationEnergy;
120 separationEnergy[PiZero] = 0.; 120 separationEnergy[PiZero] = 0.;
121 separationEnergy[PiMinus] = theNeutronSe 121 separationEnergy[PiMinus] = theNeutronSeparationEnergy - theProtonSeparationEnergy;
122 122
123 separationEnergy[Eta] = 0.; 123 separationEnergy[Eta] = 0.;
124 separationEnergy[Omega] = 0.; 124 separationEnergy[Omega] = 0.;
125 separationEnergy[EtaPrime] = 0.; 125 separationEnergy[EtaPrime] = 0.;
126 separationEnergy[Photon] = 0.; 126 separationEnergy[Photon] = 0.;
127 127
128 separationEnergy[Lambda] = theLambdaS 128 separationEnergy[Lambda] = theLambdaSeparationEnergy;
129 separationEnergy[SigmaPlus] = theProtonS 129 separationEnergy[SigmaPlus] = theProtonSeparationEnergy + theLambdaSeparationEnergy - theNeutronSeparationEnergy;
130 separationEnergy[SigmaZero] = theLambdaS 130 separationEnergy[SigmaZero] = theLambdaSeparationEnergy;
131 separationEnergy[SigmaMinus] = theNeutr 131 separationEnergy[SigmaMinus] = theNeutronSeparationEnergy + theLambdaSeparationEnergy - theProtonSeparationEnergy;
132 132
133 separationEnergy[KPlus] = theProtonSep 133 separationEnergy[KPlus] = theProtonSeparationEnergy - theLambdaSeparationEnergy;
134 separationEnergy[KZero] = (theNeutronS 134 separationEnergy[KZero] = (theNeutronSeparationEnergy - theLambdaSeparationEnergy);
135 separationEnergy[KZeroBar] = (theLambda 135 separationEnergy[KZeroBar] = (theLambdaSeparationEnergy - theNeutronSeparationEnergy);
136 separationEnergy[KMinus] = 2.*theNeut 136 separationEnergy[KMinus] = 2.*theNeutronSeparationEnergy - theProtonSeparationEnergy-theLambdaSeparationEnergy;
137 137
138 separationEnergy[KShort] = (theNeutro 138 separationEnergy[KShort] = (theNeutronSeparationEnergy - theLambdaSeparationEnergy);
139 separationEnergy[KLong] = (theNeutronS 139 separationEnergy[KLong] = (theNeutronSeparationEnergy - theLambdaSeparationEnergy);
140 140
141 separationEnergy[antiProton] = theant 141 separationEnergy[antiProton] = theantiProtonSeparationEnergy;
142 142
143 fermiEnergy[DeltaPlusPlus] = vDeltaPlusP 143 fermiEnergy[DeltaPlusPlus] = vDeltaPlusPlus - separationEnergy[DeltaPlusPlus];
144 fermiEnergy[DeltaPlus] = vDeltaPlus - se 144 fermiEnergy[DeltaPlus] = vDeltaPlus - separationEnergy[DeltaPlus];
145 fermiEnergy[DeltaZero] = vDeltaZero - se 145 fermiEnergy[DeltaZero] = vDeltaZero - separationEnergy[DeltaZero];
146 fermiEnergy[DeltaMinus] = vDeltaMinus - 146 fermiEnergy[DeltaMinus] = vDeltaMinus - separationEnergy[DeltaMinus];
147 147
148 fermiEnergy[Lambda] = vLambda - separati 148 fermiEnergy[Lambda] = vLambda - separationEnergy[Lambda];
149 if (fermiEnergy[Lambda] <= 0.) 149 if (fermiEnergy[Lambda] <= 0.)
150 fermiMomentum[Lambda]=0.; 150 fermiMomentum[Lambda]=0.;
151 else 151 else
152 fermiMomentum[Lambda]=std::sqrt(std:: 152 fermiMomentum[Lambda]=std::sqrt(std::pow(fermiEnergy[Lambda]+ml,2.0)-ml*ml);
153 153
154 fermiEnergy[SigmaPlus] = vSigmaPlus - se 154 fermiEnergy[SigmaPlus] = vSigmaPlus - separationEnergy[SigmaPlus];
155 fermiEnergy[SigmaZero] = vSigmaZero - se 155 fermiEnergy[SigmaZero] = vSigmaZero - separationEnergy[SigmaZero];
156 fermiEnergy[SigmaMinus] = vSigmaMinus - 156 fermiEnergy[SigmaMinus] = vSigmaMinus - separationEnergy[SigmaMinus];
157 157
158 fermiEnergy[antiProton] = vantiProton - 158 fermiEnergy[antiProton] = vantiProton - separationEnergy[antiProton];
159 159
160 INCL_DEBUG("Table of separation energies 160 INCL_DEBUG("Table of separation energies [MeV] for A=" << theA << ", Z=" << theZ << ":" << '\n'
161 << " proton: " << separationEner 161 << " proton: " << separationEnergy[Proton] << '\n'
162 << " neutron: " << separationEner 162 << " neutron: " << separationEnergy[Neutron] << '\n'
163 << " delta++: " << separationEner 163 << " delta++: " << separationEnergy[DeltaPlusPlus] << '\n'
164 << " delta+: " << separationEner 164 << " delta+: " << separationEnergy[DeltaPlus] << '\n'
165 << " delta0: " << separationEner 165 << " delta0: " << separationEnergy[DeltaZero] << '\n'
166 << " delta-: " << separationEner 166 << " delta-: " << separationEnergy[DeltaMinus] << '\n'
167 << " pi+: " << separationEner 167 << " pi+: " << separationEnergy[PiPlus] << '\n'
168 << " pi0: " << separationEner 168 << " pi0: " << separationEnergy[PiZero] << '\n'
169 << " pi-: " << separationEner 169 << " pi-: " << separationEnergy[PiMinus] << '\n'
170 << " eta: " << separationEner 170 << " eta: " << separationEnergy[Eta] << '\n'
171 << " omega: " << separationEner 171 << " omega: " << separationEnergy[Omega] << '\n'
172 << " etaprime:" << separationEner 172 << " etaprime:" << separationEnergy[EtaPrime] << '\n'
173 << " photon: " << separationEner 173 << " photon: " << separationEnergy[Photon] << '\n'
174 << " lambda: " << separationEner 174 << " lambda: " << separationEnergy[Lambda] << '\n'
175 << " sigmaplus: " << separationE 175 << " sigmaplus: " << separationEnergy[SigmaPlus] << '\n'
176 << " sigmazero: " << separationE 176 << " sigmazero: " << separationEnergy[SigmaZero] << '\n'
177 << " sigmaminus: " << separation 177 << " sigmaminus: " << separationEnergy[SigmaMinus] << '\n'
178 << " kplus: " << separationEnerg 178 << " kplus: " << separationEnergy[KPlus] << '\n'
179 << " kzero: " << separationEnerg 179 << " kzero: " << separationEnergy[KZero] << '\n'
180 << " kzerobar: " << separationEn 180 << " kzerobar: " << separationEnergy[KZeroBar] << '\n'
181 << " kminus: " << separationEner 181 << " kminus: " << separationEnergy[KMinus] << '\n'
182 << " kshort: " << separationEner 182 << " kshort: " << separationEnergy[KShort] << '\n'
183 << " klong: " << separationEnerg 183 << " klong: " << separationEnergy[KLong] << '\n'
184 ); 184 );
185 185
186 INCL_DEBUG("Table of Fermi energies [MeV 186 INCL_DEBUG("Table of Fermi energies [MeV] for A=" << theA << ", Z=" << theZ << ":" << '\n'
187 << " proton: " << fermiEnergy[Pr 187 << " proton: " << fermiEnergy[Proton] << '\n'
188 << " neutron: " << fermiEnergy[Ne 188 << " neutron: " << fermiEnergy[Neutron] << '\n'
189 << " delta++: " << fermiEnergy[De 189 << " delta++: " << fermiEnergy[DeltaPlusPlus] << '\n'
190 << " delta+: " << fermiEnergy[De 190 << " delta+: " << fermiEnergy[DeltaPlus] << '\n'
191 << " delta0: " << fermiEnergy[De 191 << " delta0: " << fermiEnergy[DeltaZero] << '\n'
192 << " delta-: " << fermiEnergy[De 192 << " delta-: " << fermiEnergy[DeltaMinus] << '\n'
193 << " lambda: " << fermiEnergy[La 193 << " lambda: " << fermiEnergy[Lambda] << '\n'
194 << " sigma+: " << fermiEnergy[Si 194 << " sigma+: " << fermiEnergy[SigmaPlus] << '\n'
195 << " sigma0: " << fermiEnergy[Si 195 << " sigma0: " << fermiEnergy[SigmaZero] << '\n'
196 << " sigma-: " << fermiEnergy[Si 196 << " sigma-: " << fermiEnergy[SigmaMinus] << '\n'
197 ); 197 );
198 198
199 INCL_DEBUG("Table of Fermi momenta [MeV/ 199 INCL_DEBUG("Table of Fermi momenta [MeV/c] for A=" << theA << ", Z=" << theZ << ":" << '\n'
200 << " proton: " << fermiMomentum[ 200 << " proton: " << fermiMomentum[Proton] << '\n'
201 << " neutron: " << fermiMomentum[ 201 << " neutron: " << fermiMomentum[Neutron] << '\n'
202 ); 202 );
203 } 203 }
204 204
205 G4double NuclearPotentialIsospin::computeP 205 G4double NuclearPotentialIsospin::computePotentialEnergy(const Particle *particle) const {
206 206
207 switch( particle->getType() ) 207 switch( particle->getType() )
208 { 208 {
209 case Proton: 209 case Proton:
210 return vProton; 210 return vProton;
211 break; 211 break;
212 case Neutron: 212 case Neutron:
213 return vNeutron; 213 return vNeutron;
214 break; 214 break;
215 215
216 case PiPlus: 216 case PiPlus:
217 case PiZero: 217 case PiZero:
218 case PiMinus: 218 case PiMinus:
219 return computePionPotentialEnergy(pa 219 return computePionPotentialEnergy(particle);
220 break; 220 break;
221 221
222 case SigmaPlus: 222 case SigmaPlus:
223 return vSigmaPlus; 223 return vSigmaPlus;
224 break; 224 break;
225 case SigmaZero: 225 case SigmaZero:
226 return vSigmaZero; 226 return vSigmaZero;
227 break; 227 break;
228 case Lambda: 228 case Lambda:
229 return vLambda; 229 return vLambda;
230 break; 230 break;
231 case SigmaMinus: 231 case SigmaMinus:
232 return vSigmaMinus; 232 return vSigmaMinus;
233 break; 233 break;
234 234
235 case Eta: 235 case Eta:
236 case Omega: 236 case Omega:
237 case EtaPrime: 237 case EtaPrime:
238 return computePionResonancePotential 238 return computePionResonancePotentialEnergy(particle);
239 break; 239 break;
240 240
241 case KPlus: 241 case KPlus:
242 case KZero: 242 case KZero:
243 case KZeroBar: 243 case KZeroBar:
244 case KMinus: 244 case KMinus:
245 case KShort: 245 case KShort:
246 case KLong: 246 case KLong:
247 return computeKaonPotentialEnergy(pa 247 return computeKaonPotentialEnergy(particle);
248 break; 248 break;
249 249
250 case Photon: 250 case Photon:
251 return 0.0; 251 return 0.0;
252 break; 252 break;
253 253
254 case antiProton: 254 case antiProton:
255 return vantiProton; 255 return vantiProton;
256 break; 256 break;
257 case antiNeutron: 257 case antiNeutron:
258 return vantiProton; 258 return vantiProton;
259 break; 259 break;
260 case antiLambda: 260 case antiLambda:
261 return 0.0; 261 return 0.0;
262 break; 262 break;
263 case antiSigmaMinus: 263 case antiSigmaMinus:
264 return 0.0; 264 return 0.0;
265 break; 265 break;
266 case antiSigmaPlus: 266 case antiSigmaPlus:
267 return 0.0; 267 return 0.0;
268 break; 268 break;
269 case antiSigmaZero: 269 case antiSigmaZero:
270 return 0.0; 270 return 0.0;
271 break; 271 break;
272 case antiXiMinus: 272 case antiXiMinus:
273 return 0.0; 273 return 0.0;
274 break; 274 break;
275 case antiXiZero: 275 case antiXiZero:
276 return 0.0; 276 return 0.0;
277 break; 277 break;
278 case XiMinus: 278 case XiMinus:
279 return 0.0; 279 return 0.0;
280 break; 280 break;
281 case XiZero: 281 case XiZero:
282 return 0.0; 282 return 0.0;
283 break; 283 break;
284 284
285 case DeltaPlusPlus: 285 case DeltaPlusPlus:
286 return vDeltaPlusPlus; 286 return vDeltaPlusPlus;
287 break; 287 break;
288 case DeltaPlus: 288 case DeltaPlus:
289 return vDeltaPlus; 289 return vDeltaPlus;
290 break; 290 break;
291 case DeltaZero: 291 case DeltaZero:
292 return vDeltaZero; 292 return vDeltaZero;
293 break; 293 break;
294 case DeltaMinus: 294 case DeltaMinus:
295 return vDeltaMinus; 295 return vDeltaMinus;
296 break; 296 break;
297 case Composite: 297 case Composite:
298 INCL_ERROR("No potential computed for partic 298 INCL_ERROR("No potential computed for particle of type Cluster.");
299 return 0.0; 299 return 0.0;
300 break; 300 break;
301 case UnknownParticle: 301 case UnknownParticle:
302 INCL_ERROR("Trying to compute potential ener 302 INCL_ERROR("Trying to compute potential energy for an unknown particle.");
303 return 0.0; 303 return 0.0;
304 break; 304 break;
305 } 305 }
306 306
307 INCL_ERROR("There is no potential for th 307 INCL_ERROR("There is no potential for this type of particle.");
308 return 0.0; 308 return 0.0;
309 } 309 }
310 310
311 } 311 }
312 } 312 }
313 313
314 314