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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 // Pekka Kaitaniemi, CEA and Helsinki Institute of Physics
28 // Joseph Cugnon, University of Liege, Belgium << 28 // Davide Mancusi, CEA
29 // Jean-Christophe David, CEA-Saclay, France << 29 // Alain Boudard, CEA
30 // Pekka Kaitaniemi, CEA-Saclay, France, and H << 30 // Sylvie Leray, CEA
31 // Sylvie Leray, CEA-Saclay, France << 31 // Joseph Cugnon, University of Liege
32 // Davide Mancusi, CEA-Saclay, France <<
33 // 32 //
34 #define INCLXX_IN_GEANT4_MODE 1 33 #define INCLXX_IN_GEANT4_MODE 1
35 34
36 #include "globals.hh" 35 #include "globals.hh"
37 36
38 /** \file G4INCLNuclearPotentialIsospin.cc 37 /** \file G4INCLNuclearPotentialIsospin.cc
39 * \brief Isospin-dependent nuclear potential. 38 * \brief Isospin-dependent nuclear potential.
40 * 39 *
41 * Provides an isospin-dependent nuclear poten 40 * Provides an isospin-dependent nuclear potential.
42 * 41 *
43 * \date 28 February 2011 42 * \date 28 February 2011
44 * \author Davide Mancusi 43 * \author Davide Mancusi
45 */ 44 */
46 45
47 #include "G4INCLNuclearPotentialIsospin.hh" 46 #include "G4INCLNuclearPotentialIsospin.hh"
48 #include "G4INCLNuclearPotentialConstant.hh" 47 #include "G4INCLNuclearPotentialConstant.hh"
49 #include "G4INCLParticleTable.hh" 48 #include "G4INCLParticleTable.hh"
50 #include "G4INCLGlobals.hh" 49 #include "G4INCLGlobals.hh"
51 50
52 namespace G4INCL { 51 namespace G4INCL {
53 52
54 namespace NuclearPotential { 53 namespace NuclearPotential {
55 54
56 // Constructors 55 // Constructors
57 NuclearPotentialIsospin::NuclearPotentialI 56 NuclearPotentialIsospin::NuclearPotentialIsospin(const G4int A, const G4int Z, const G4bool aPionPotential)
58 : INuclearPotential(A, Z, aPionPotential 57 : INuclearPotential(A, Z, aPionPotential)
59 { 58 {
60 initialize(); 59 initialize();
61 } 60 }
62 61
63 // Destructor 62 // Destructor
64 NuclearPotentialIsospin::~NuclearPotential 63 NuclearPotentialIsospin::~NuclearPotentialIsospin() {}
65 64
66 void NuclearPotentialIsospin::initialize() 65 void NuclearPotentialIsospin::initialize() {
67 const G4double ZOverA = ((G4double) theZ 66 const G4double ZOverA = ((G4double) theZ) / ((G4double) theA);
68 67
69 const G4double mp = ParticleTable::getIN 68 const G4double mp = ParticleTable::getINCLMass(Proton);
70 const G4double mn = ParticleTable::getIN 69 const G4double mn = ParticleTable::getINCLMass(Neutron);
71 const G4double ml = ParticleTable::getIN <<
72 70
73 const G4double theFermiMomentum = Partic 71 const G4double theFermiMomentum = ParticleTable::getFermiMomentum(theA,theZ);
74 72
75 fermiMomentum[Proton] = theFermiMomentum 73 fermiMomentum[Proton] = theFermiMomentum * Math::pow13(2.*ZOverA);
76 const G4double theProtonFermiEnergy = st 74 const G4double theProtonFermiEnergy = std::sqrt(fermiMomentum[Proton]*fermiMomentum[Proton] + mp*mp) - mp;
77 fermiEnergy[Proton] = theProtonFermiEner 75 fermiEnergy[Proton] = theProtonFermiEnergy;
78 // Use separation energies from the Part 76 // Use separation energies from the ParticleTable
79 const G4double theProtonSeparationEnergy 77 const G4double theProtonSeparationEnergy = ParticleTable::getSeparationEnergy(Proton,theA,theZ);
80 separationEnergy[Proton] = theProtonSepa 78 separationEnergy[Proton] = theProtonSeparationEnergy;
81 vProton = theProtonFermiEnergy + theProt 79 vProton = theProtonFermiEnergy + theProtonSeparationEnergy;
82 80
83 fermiMomentum[Neutron] = theFermiMomentu 81 fermiMomentum[Neutron] = theFermiMomentum * Math::pow13(2.*(1.-ZOverA));
84 const G4double theNeutronFermiEnergy = s 82 const G4double theNeutronFermiEnergy = std::sqrt(fermiMomentum[Neutron]*fermiMomentum[Neutron] + mn*mn) - mn;
85 fermiEnergy[Neutron] = theNeutronFermiEn 83 fermiEnergy[Neutron] = theNeutronFermiEnergy;
86 // Use separation energies from the Part 84 // Use separation energies from the ParticleTable
87 const G4double theNeutronSeparationEnerg 85 const G4double theNeutronSeparationEnergy = ParticleTable::getSeparationEnergy(Neutron,theA,theZ);
88 separationEnergy[Neutron] = theNeutronSe 86 separationEnergy[Neutron] = theNeutronSeparationEnergy;
89 vNeutron = theNeutronFermiEnergy + theNe 87 vNeutron = theNeutronFermiEnergy + theNeutronSeparationEnergy;
90 88
91 const G4double separationEnergyDeltaPlus 89 const G4double separationEnergyDeltaPlusPlus = 2.*theProtonSeparationEnergy - theNeutronSeparationEnergy;
92 separationEnergy[DeltaPlusPlus] = separa 90 separationEnergy[DeltaPlusPlus] = separationEnergyDeltaPlusPlus;
93 separationEnergy[DeltaPlus] = theProtonS 91 separationEnergy[DeltaPlus] = theProtonSeparationEnergy;
94 separationEnergy[DeltaZero] = theNeutron 92 separationEnergy[DeltaZero] = theNeutronSeparationEnergy;
95 const G4double separationEnergyDeltaMinu 93 const G4double separationEnergyDeltaMinus = 2.*theNeutronSeparationEnergy - theProtonSeparationEnergy;
96 separationEnergy[DeltaMinus] = separatio 94 separationEnergy[DeltaMinus] = separationEnergyDeltaMinus;
97 95
98 const G4double tinyMargin = 1E-7; 96 const G4double tinyMargin = 1E-7;
99 vDeltaPlus = vProton; 97 vDeltaPlus = vProton;
100 vDeltaZero = vNeutron; 98 vDeltaZero = vNeutron;
101 vDeltaPlusPlus = std::max(separationEner 99 vDeltaPlusPlus = std::max(separationEnergyDeltaPlusPlus + tinyMargin, 2.*vDeltaPlus - vDeltaZero);
102 vDeltaMinus = std::max(separationEnergyD 100 vDeltaMinus = std::max(separationEnergyDeltaMinus + tinyMargin, 2.*vDeltaZero - vDeltaPlus);
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 <<
118 101
119 separationEnergy[PiPlus] = theProtonSepa 102 separationEnergy[PiPlus] = theProtonSeparationEnergy - theNeutronSeparationEnergy;
120 separationEnergy[PiZero] = 0.; 103 separationEnergy[PiZero] = 0.;
121 separationEnergy[PiMinus] = theNeutronSe 104 separationEnergy[PiMinus] = theNeutronSeparationEnergy - theProtonSeparationEnergy;
122 105
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 106 fermiEnergy[DeltaPlusPlus] = vDeltaPlusPlus - separationEnergy[DeltaPlusPlus];
144 fermiEnergy[DeltaPlus] = vDeltaPlus - se 107 fermiEnergy[DeltaPlus] = vDeltaPlus - separationEnergy[DeltaPlus];
145 fermiEnergy[DeltaZero] = vDeltaZero - se 108 fermiEnergy[DeltaZero] = vDeltaZero - separationEnergy[DeltaZero];
146 fermiEnergy[DeltaMinus] = vDeltaMinus - 109 fermiEnergy[DeltaMinus] = vDeltaMinus - separationEnergy[DeltaMinus];
147 << 110
148 fermiEnergy[Lambda] = vLambda - separati << 111 INCL_DEBUG("Table of separation energies [MeV] for A=" << theA << ", Z=" << theZ << ":" << std::endl
149 if (fermiEnergy[Lambda] <= 0.) << 112 << " proton: " << separationEnergy[Proton] << std::endl
150 fermiMomentum[Lambda]=0.; << 113 << " neutron: " << separationEnergy[Neutron] << std::endl
151 else << 114 << " delta++: " << separationEnergy[DeltaPlusPlus] << std::endl
152 fermiMomentum[Lambda]=std::sqrt(std:: << 115 << " delta+: " << separationEnergy[DeltaPlus] << std::endl
153 << 116 << " delta0: " << separationEnergy[DeltaZero] << std::endl
154 fermiEnergy[SigmaPlus] = vSigmaPlus - se << 117 << " delta-: " << separationEnergy[DeltaMinus] << std::endl
155 fermiEnergy[SigmaZero] = vSigmaZero - se << 118 << " pi+: " << separationEnergy[PiPlus] << std::endl
156 fermiEnergy[SigmaMinus] = vSigmaMinus - << 119 << " pi0: " << separationEnergy[PiZero] << std::endl
157 << 120 << " pi-: " << separationEnergy[PiMinus] << std::endl
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 ); 121 );
185 122
186 INCL_DEBUG("Table of Fermi energies [MeV << 123 INCL_DEBUG("Table of Fermi energies [MeV] for A=" << theA << ", Z=" << theZ << ":" << std::endl
187 << " proton: " << fermiEnergy[Pr << 124 << " proton: " << fermiEnergy[Proton] << std::endl
188 << " neutron: " << fermiEnergy[Ne << 125 << " neutron: " << fermiEnergy[Neutron] << std::endl
189 << " delta++: " << fermiEnergy[De << 126 << " delta++: " << fermiEnergy[DeltaPlusPlus] << std::endl
190 << " delta+: " << fermiEnergy[De << 127 << " delta+: " << fermiEnergy[DeltaPlus] << std::endl
191 << " delta0: " << fermiEnergy[De << 128 << " delta0: " << fermiEnergy[DeltaZero] << std::endl
192 << " delta-: " << fermiEnergy[De << 129 << " delta-: " << fermiEnergy[DeltaMinus] << std::endl
193 << " lambda: " << fermiEnergy[La <<
194 << " sigma+: " << fermiEnergy[Si <<
195 << " sigma0: " << fermiEnergy[Si <<
196 << " sigma-: " << fermiEnergy[Si <<
197 ); 130 );
198 131
199 INCL_DEBUG("Table of Fermi momenta [MeV/ << 132 INCL_DEBUG("Table of Fermi momenta [MeV/c] for A=" << theA << ", Z=" << theZ << ":" << std::endl
200 << " proton: " << fermiMomentum[ << 133 << " proton: " << fermiMomentum[Proton] << std::endl
201 << " neutron: " << fermiMomentum[ << 134 << " neutron: " << fermiMomentum[Neutron] << std::endl
202 ); 135 );
203 } 136 }
204 137
205 G4double NuclearPotentialIsospin::computeP 138 G4double NuclearPotentialIsospin::computePotentialEnergy(const Particle *particle) const {
206 139
207 switch( particle->getType() ) 140 switch( particle->getType() )
208 { 141 {
209 case Proton: 142 case Proton:
210 return vProton; 143 return vProton;
211 break; 144 break;
212 case Neutron: 145 case Neutron:
213 return vNeutron; 146 return vNeutron;
214 break; 147 break;
215 148
216 case PiPlus: 149 case PiPlus:
217 case PiZero: 150 case PiZero:
218 case PiMinus: 151 case PiMinus:
219 return computePionPotentialEnergy(pa 152 return computePionPotentialEnergy(particle);
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; 153 break;
284 154
285 case DeltaPlusPlus: 155 case DeltaPlusPlus:
286 return vDeltaPlusPlus; 156 return vDeltaPlusPlus;
287 break; 157 break;
288 case DeltaPlus: 158 case DeltaPlus:
289 return vDeltaPlus; 159 return vDeltaPlus;
290 break; 160 break;
291 case DeltaZero: 161 case DeltaZero:
292 return vDeltaZero; 162 return vDeltaZero;
293 break; 163 break;
294 case DeltaMinus: 164 case DeltaMinus:
295 return vDeltaMinus; 165 return vDeltaMinus;
296 break; 166 break;
297 case Composite: 167 case Composite:
298 INCL_ERROR("No potential computed for partic 168 INCL_ERROR("No potential computed for particle of type Cluster.");
299 return 0.0; 169 return 0.0;
300 break; 170 break;
301 case UnknownParticle: 171 case UnknownParticle:
302 INCL_ERROR("Trying to compute potential ener 172 INCL_ERROR("Trying to compute potential energy for an unknown particle.");
303 return 0.0; 173 return 0.0;
304 break; 174 break;
305 } 175 }
306 176
307 INCL_ERROR("There is no potential for th 177 INCL_ERROR("There is no potential for this type of particle.");
308 return 0.0; 178 return 0.0;
309 } 179 }
310 180
311 } 181 }
312 } 182 }
313 183
314 184