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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 = 28.;
109 vantiProton = 100.; <<
110 <<
111 const G4double asy = (theA - 2.*theZ)/th 109 const G4double asy = (theA - 2.*theZ)/theA;
112 // Jose Luis Rodriguez-Sanchez et al., R << 110 if(asy>0.11)vLambda = 56.549-678.73*asy+4905.35*std::pow(asy,2.)-9789.1*std::pow(asy,3.); // Jose Luis Rodriguez-Sanchez et al., Rapid Communication PRC
113 if (asy > 0.236) vLambda = 40.91; << 111
114 else if (asy > 0.133) vLambda = 56.549 - <<
115 <<
116 const G4double theLambdaSeparationEnergy 112 const G4double theLambdaSeparationEnergy = ParticleTable::getSeparationEnergy(Lambda,theA,theZ);
117 const G4double theantiProtonSeparationEn <<
118 113
119 separationEnergy[PiPlus] = theProtonSepa 114 separationEnergy[PiPlus] = theProtonSeparationEnergy - theNeutronSeparationEnergy;
120 separationEnergy[PiZero] = 0.; 115 separationEnergy[PiZero] = 0.;
121 separationEnergy[PiMinus] = theNeutronSe 116 separationEnergy[PiMinus] = theNeutronSeparationEnergy - theProtonSeparationEnergy;
122 117
123 separationEnergy[Eta] = 0.; 118 separationEnergy[Eta] = 0.;
124 separationEnergy[Omega] = 0.; 119 separationEnergy[Omega] = 0.;
125 separationEnergy[EtaPrime] = 0.; 120 separationEnergy[EtaPrime] = 0.;
126 separationEnergy[Photon] = 0.; 121 separationEnergy[Photon] = 0.;
127 122
128 separationEnergy[Lambda] = theLambdaS 123 separationEnergy[Lambda] = theLambdaSeparationEnergy;
129 separationEnergy[SigmaPlus] = theProtonS 124 separationEnergy[SigmaPlus] = theProtonSeparationEnergy + theLambdaSeparationEnergy - theNeutronSeparationEnergy;
130 separationEnergy[SigmaZero] = theLambdaS 125 separationEnergy[SigmaZero] = theLambdaSeparationEnergy;
131 separationEnergy[SigmaMinus] = theNeutr 126 separationEnergy[SigmaMinus] = theNeutronSeparationEnergy + theLambdaSeparationEnergy - theProtonSeparationEnergy;
132 127
133 separationEnergy[KPlus] = theProtonSep 128 separationEnergy[KPlus] = theProtonSeparationEnergy - theLambdaSeparationEnergy;
134 separationEnergy[KZero] = (theNeutronS 129 separationEnergy[KZero] = (theNeutronSeparationEnergy - theLambdaSeparationEnergy);
135 separationEnergy[KZeroBar] = (theLambda 130 separationEnergy[KZeroBar] = (theLambdaSeparationEnergy - theNeutronSeparationEnergy);
136 separationEnergy[KMinus] = 2.*theNeut 131 separationEnergy[KMinus] = 2.*theNeutronSeparationEnergy - theProtonSeparationEnergy-theLambdaSeparationEnergy;
137 132
138 separationEnergy[KShort] = (theNeutro 133 separationEnergy[KShort] = (theNeutronSeparationEnergy - theLambdaSeparationEnergy);
139 separationEnergy[KLong] = (theNeutronS 134 separationEnergy[KLong] = (theNeutronSeparationEnergy - theLambdaSeparationEnergy);
140 135
141 separationEnergy[antiProton] = theant <<
142 <<
143 fermiEnergy[DeltaPlusPlus] = vDeltaPlusP 136 fermiEnergy[DeltaPlusPlus] = vDeltaPlusPlus - separationEnergy[DeltaPlusPlus];
144 fermiEnergy[DeltaPlus] = vDeltaPlus - se 137 fermiEnergy[DeltaPlus] = vDeltaPlus - separationEnergy[DeltaPlus];
145 fermiEnergy[DeltaZero] = vDeltaZero - se 138 fermiEnergy[DeltaZero] = vDeltaZero - separationEnergy[DeltaZero];
146 fermiEnergy[DeltaMinus] = vDeltaMinus - 139 fermiEnergy[DeltaMinus] = vDeltaMinus - separationEnergy[DeltaMinus];
147 140
148 fermiEnergy[Lambda] = vLambda - separati 141 fermiEnergy[Lambda] = vLambda - separationEnergy[Lambda];
149 if (fermiEnergy[Lambda] <= 0.) 142 if (fermiEnergy[Lambda] <= 0.)
150 fermiMomentum[Lambda]=0.; 143 fermiMomentum[Lambda]=0.;
151 else 144 else
152 fermiMomentum[Lambda]=std::sqrt(std:: 145 fermiMomentum[Lambda]=std::sqrt(std::pow(fermiEnergy[Lambda]+ml,2.0)-ml*ml);
153 146
154 fermiEnergy[SigmaPlus] = vSigmaPlus - se 147 fermiEnergy[SigmaPlus] = vSigmaPlus - separationEnergy[SigmaPlus];
155 fermiEnergy[SigmaZero] = vSigmaZero - se 148 fermiEnergy[SigmaZero] = vSigmaZero - separationEnergy[SigmaZero];
156 fermiEnergy[SigmaMinus] = vSigmaMinus - 149 fermiEnergy[SigmaMinus] = vSigmaMinus - separationEnergy[SigmaMinus];
157 <<
158 fermiEnergy[antiProton] = vantiProton - <<
159 150
160 INCL_DEBUG("Table of separation energies 151 INCL_DEBUG("Table of separation energies [MeV] for A=" << theA << ", Z=" << theZ << ":" << '\n'
161 << " proton: " << separationEner 152 << " proton: " << separationEnergy[Proton] << '\n'
162 << " neutron: " << separationEner 153 << " neutron: " << separationEnergy[Neutron] << '\n'
163 << " delta++: " << separationEner 154 << " delta++: " << separationEnergy[DeltaPlusPlus] << '\n'
164 << " delta+: " << separationEner 155 << " delta+: " << separationEnergy[DeltaPlus] << '\n'
165 << " delta0: " << separationEner 156 << " delta0: " << separationEnergy[DeltaZero] << '\n'
166 << " delta-: " << separationEner 157 << " delta-: " << separationEnergy[DeltaMinus] << '\n'
167 << " pi+: " << separationEner 158 << " pi+: " << separationEnergy[PiPlus] << '\n'
168 << " pi0: " << separationEner 159 << " pi0: " << separationEnergy[PiZero] << '\n'
169 << " pi-: " << separationEner 160 << " pi-: " << separationEnergy[PiMinus] << '\n'
170 << " eta: " << separationEner 161 << " eta: " << separationEnergy[Eta] << '\n'
171 << " omega: " << separationEner 162 << " omega: " << separationEnergy[Omega] << '\n'
172 << " etaprime:" << separationEner 163 << " etaprime:" << separationEnergy[EtaPrime] << '\n'
173 << " photon: " << separationEner 164 << " photon: " << separationEnergy[Photon] << '\n'
174 << " lambda: " << separationEner 165 << " lambda: " << separationEnergy[Lambda] << '\n'
175 << " sigmaplus: " << separationE 166 << " sigmaplus: " << separationEnergy[SigmaPlus] << '\n'
176 << " sigmazero: " << separationE 167 << " sigmazero: " << separationEnergy[SigmaZero] << '\n'
177 << " sigmaminus: " << separation 168 << " sigmaminus: " << separationEnergy[SigmaMinus] << '\n'
178 << " kplus: " << separationEnerg 169 << " kplus: " << separationEnergy[KPlus] << '\n'
179 << " kzero: " << separationEnerg 170 << " kzero: " << separationEnergy[KZero] << '\n'
180 << " kzerobar: " << separationEn 171 << " kzerobar: " << separationEnergy[KZeroBar] << '\n'
181 << " kminus: " << separationEner 172 << " kminus: " << separationEnergy[KMinus] << '\n'
182 << " kshort: " << separationEner 173 << " kshort: " << separationEnergy[KShort] << '\n'
183 << " klong: " << separationEnerg 174 << " klong: " << separationEnergy[KLong] << '\n'
184 ); 175 );
185 176
186 INCL_DEBUG("Table of Fermi energies [MeV 177 INCL_DEBUG("Table of Fermi energies [MeV] for A=" << theA << ", Z=" << theZ << ":" << '\n'
187 << " proton: " << fermiEnergy[Pr 178 << " proton: " << fermiEnergy[Proton] << '\n'
188 << " neutron: " << fermiEnergy[Ne 179 << " neutron: " << fermiEnergy[Neutron] << '\n'
189 << " delta++: " << fermiEnergy[De 180 << " delta++: " << fermiEnergy[DeltaPlusPlus] << '\n'
190 << " delta+: " << fermiEnergy[De 181 << " delta+: " << fermiEnergy[DeltaPlus] << '\n'
191 << " delta0: " << fermiEnergy[De 182 << " delta0: " << fermiEnergy[DeltaZero] << '\n'
192 << " delta-: " << fermiEnergy[De 183 << " delta-: " << fermiEnergy[DeltaMinus] << '\n'
193 << " lambda: " << fermiEnergy[La 184 << " lambda: " << fermiEnergy[Lambda] << '\n'
194 << " sigma+: " << fermiEnergy[Si 185 << " sigma+: " << fermiEnergy[SigmaPlus] << '\n'
195 << " sigma0: " << fermiEnergy[Si 186 << " sigma0: " << fermiEnergy[SigmaZero] << '\n'
196 << " sigma-: " << fermiEnergy[Si 187 << " sigma-: " << fermiEnergy[SigmaMinus] << '\n'
197 ); 188 );
198 189
199 INCL_DEBUG("Table of Fermi momenta [MeV/ 190 INCL_DEBUG("Table of Fermi momenta [MeV/c] for A=" << theA << ", Z=" << theZ << ":" << '\n'
200 << " proton: " << fermiMomentum[ 191 << " proton: " << fermiMomentum[Proton] << '\n'
201 << " neutron: " << fermiMomentum[ 192 << " neutron: " << fermiMomentum[Neutron] << '\n'
202 ); 193 );
203 } 194 }
204 195
205 G4double NuclearPotentialIsospin::computeP 196 G4double NuclearPotentialIsospin::computePotentialEnergy(const Particle *particle) const {
206 197
207 switch( particle->getType() ) 198 switch( particle->getType() )
208 { 199 {
209 case Proton: 200 case Proton:
210 return vProton; 201 return vProton;
211 break; 202 break;
212 case Neutron: 203 case Neutron:
213 return vNeutron; 204 return vNeutron;
214 break; 205 break;
215 206
216 case PiPlus: 207 case PiPlus:
217 case PiZero: 208 case PiZero:
218 case PiMinus: 209 case PiMinus:
219 return computePionPotentialEnergy(pa 210 return computePionPotentialEnergy(particle);
220 break; 211 break;
221 212
222 case SigmaPlus: 213 case SigmaPlus:
223 return vSigmaPlus; 214 return vSigmaPlus;
224 break; 215 break;
225 case SigmaZero: 216 case SigmaZero:
226 return vSigmaZero; 217 return vSigmaZero;
227 break; 218 break;
228 case Lambda: 219 case Lambda:
229 return vLambda; 220 return vLambda;
230 break; 221 break;
231 case SigmaMinus: 222 case SigmaMinus:
232 return vSigmaMinus; 223 return vSigmaMinus;
233 break; 224 break;
234 225
235 case Eta: 226 case Eta:
236 case Omega: 227 case Omega:
237 case EtaPrime: << 228 case EtaPrime:
238 return computePionResonancePotential 229 return computePionResonancePotentialEnergy(particle);
239 break; 230 break;
240 231
241 case KPlus: 232 case KPlus:
242 case KZero: 233 case KZero:
243 case KZeroBar: 234 case KZeroBar:
244 case KMinus: 235 case KMinus:
245 case KShort: 236 case KShort:
246 case KLong: 237 case KLong:
247 return computeKaonPotentialEnergy(pa 238 return computeKaonPotentialEnergy(particle);
248 break; 239 break;
249 240
250 case Photon: 241 case Photon:
251 return 0.0; <<
252 break; <<
253 <<
254 case antiProton: <<
255 return vantiProton; <<
256 break; <<
257 case antiNeutron: <<
258 return vantiProton; <<
259 break; <<
260 case antiLambda: <<
261 return 0.0; <<
262 break; <<
263 case antiSigmaMinus: <<
264 return 0.0; <<
265 break; <<
266 case antiSigmaPlus: <<
267 return 0.0; <<
268 break; <<
269 case antiSigmaZero: <<
270 return 0.0; <<
271 break; <<
272 case antiXiMinus: <<
273 return 0.0; <<
274 break; <<
275 case antiXiZero: <<
276 return 0.0; <<
277 break; <<
278 case XiMinus: <<
279 return 0.0; <<
280 break; <<
281 case XiZero: <<
282 return 0.0; 242 return 0.0;
283 break; 243 break;
284 244
285 case DeltaPlusPlus: 245 case DeltaPlusPlus:
286 return vDeltaPlusPlus; 246 return vDeltaPlusPlus;
287 break; 247 break;
288 case DeltaPlus: 248 case DeltaPlus:
289 return vDeltaPlus; 249 return vDeltaPlus;
290 break; 250 break;
291 case DeltaZero: 251 case DeltaZero:
292 return vDeltaZero; 252 return vDeltaZero;
293 break; 253 break;
294 case DeltaMinus: 254 case DeltaMinus:
295 return vDeltaMinus; 255 return vDeltaMinus;
296 break; 256 break;
297 case Composite: 257 case Composite:
298 INCL_ERROR("No potential computed for partic 258 INCL_ERROR("No potential computed for particle of type Cluster.");
299 return 0.0; 259 return 0.0;
300 break; 260 break;
301 case UnknownParticle: 261 case UnknownParticle:
302 INCL_ERROR("Trying to compute potential ener 262 INCL_ERROR("Trying to compute potential energy for an unknown particle.");
303 return 0.0; 263 return 0.0;
304 break; 264 break;
305 } 265 }
306 266
307 INCL_ERROR("There is no potential for th 267 INCL_ERROR("There is no potential for this type of particle.");
308 return 0.0; 268 return 0.0;
309 } 269 }
310 270
311 } 271 }
312 } 272 }
313 273
314 274