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