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>> 26 // $Id: G4BGGPionInelasticXS.cc,v 1.1 2007/03/13 15:19:30 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-08-03-patch-01 $
>> 28 //
26 // ------------------------------------------- 29 // -------------------------------------------------------------------
27 // 30 //
28 // GEANT4 Class file 31 // GEANT4 Class file
29 // 32 //
30 // 33 //
31 // File name: G4BGGPionInelasticXS 34 // File name: G4BGGPionInelasticXS
32 // 35 //
33 // Author: Vladimir Ivanchenko 36 // Author: Vladimir Ivanchenko
34 // 37 //
35 // Creation date: 01.10.2003 38 // Creation date: 01.10.2003
36 // Modifications: 39 // Modifications:
37 // 40 //
>> 41 //
38 // ------------------------------------------- 42 // -------------------------------------------------------------------
39 // 43 //
40 44
41 #include "G4BGGPionInelasticXS.hh" 45 #include "G4BGGPionInelasticXS.hh"
42 #include "G4SystemOfUnits.hh" << 46 #include "G4GlauberGribovCrossSection.hh"
43 #include "G4ComponentGGHadronNucleusXsc.hh" <<
44 #include "G4UPiNuclearCrossSection.hh" 47 #include "G4UPiNuclearCrossSection.hh"
45 #include "G4HadronNucleonXsc.hh" <<
46 #include "G4NuclearRadii.hh" <<
47 <<
48 #include "G4Proton.hh" <<
49 #include "G4PionPlus.hh" 48 #include "G4PionPlus.hh"
50 #include "G4PionMinus.hh" 49 #include "G4PionMinus.hh"
51 #include "G4NistManager.hh" 50 #include "G4NistManager.hh"
52 #include "G4Pow.hh" <<
53 #include "G4HadronicParameters.hh" <<
54 51
55 G4double G4BGGPionInelasticXS::theGlauberFacPi << 52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
56 G4double G4BGGPionInelasticXS::theGlauberFacPi <<
57 G4double G4BGGPionInelasticXS::theLowEPiPlus[9 <<
58 G4double G4BGGPionInelasticXS::theLowEPiMinus[ <<
59 G4int G4BGGPionInelasticXS::theA[93] = {0}; <<
60 53
61 G4BGGPionInelasticXS::G4BGGPionInelasticXS(con 54 G4BGGPionInelasticXS::G4BGGPionInelasticXS(const G4ParticleDefinition* p)
62 : G4VCrossSectionDataSet("BarashenkovGlauberG <<
63 { 55 {
64 verboseLevel = 0; 56 verboseLevel = 0;
65 fGlauberEnergy = 91.*CLHEP::GeV; << 57 thEnergy = 100.*GeV;
66 fLowEnergy = 20.*CLHEP::MeV; << 58 if(p == G4PionPlus::PionPlus() || p == G4PionMinus::PionMinus()) {
67 fLowestEnergy = 1.*CLHEP::MeV; << 59 fPion = new G4UPiNuclearCrossSection();
68 SetMinKinEnergy(0.0); << 60 fGlauber = new G4GlauberGribovCrossSection();
69 SetMaxKinEnergy( G4HadronicParameters::Insta << 61 particle = p;
70 << 62 Initialise();
71 fPion = new G4UPiNuclearCrossSection(); << 63 } else {
72 fGlauber = new G4ComponentGGHadronNucleusXsc << 64 fPion = 0;
73 fHadron = new G4HadronNucleonXsc(); << 65 fGlauber = 0;
74 << 66 particle = 0;
75 fG4pow = G4Pow::GetInstance(); << 67 if(p) G4cout << "### G4BGGPionInelasticXS WARNING: is not applicable to "
76 << 68 << p->GetParticleName()
77 theProton = G4Proton::Proton(); << 69 << G4endl;
78 thePiPlus = G4PionPlus::PionPlus(); << 70 else G4cout << "### G4BGGPionInelasticXS WARNING: particle is not defined "
79 isPiplus = (p == thePiPlus); << 71 << G4endl;
80 SetForAllAtomsAndEnergies(true); << 72 }
81 <<
82 if (0 == theA[0]) { Initialise(); } <<
83 } 73 }
84 74
85 //....oooOO0OOooo........oooOO0OOooo........oo 75 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
86 76
87 G4BGGPionInelasticXS::~G4BGGPionInelasticXS() 77 G4BGGPionInelasticXS::~G4BGGPionInelasticXS()
88 { 78 {
89 delete fHadron; << 79 delete fGlauber;
90 } << 80 delete fPion;
91 <<
92 //....oooOO0OOooo........oooOO0OOooo........oo <<
93 <<
94 G4bool <<
95 G4BGGPionInelasticXS::IsElementApplicable(cons <<
96 cons <<
97 { <<
98 return true; <<
99 } 81 }
100 82
101 //....oooOO0OOooo........oooOO0OOooo........oo 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
102 84
103 G4bool G4BGGPionInelasticXS::IsIsoApplicable(c << 85 G4double G4BGGPionInelasticXS::GetIsoZACrossSection(const G4DynamicParticle* dp,
104 G << 86 G4double Z,
105 c << 87 G4double A,
106 c << 88 G4double)
107 { 89 {
108 return (1 == Z); <<
109 } <<
110 <<
111 //....oooOO0OOooo........oooOO0OOooo........oo <<
112 <<
113 G4double <<
114 G4BGGPionInelasticXS::GetElementCrossSection(c <<
115 G <<
116 { <<
117 // this method should be called only for Z > <<
118 <<
119 G4double cross = 0.0; 90 G4double cross = 0.0;
120 G4double ekin = std::max(dp->GetKineticEnerg << 91 G4double ekin = dp->GetKineticEnergy();
121 G4int Z = std::min(ZZ, 92); << 92 G4int iz = G4int(Z + 0.5);
>> 93 if(iz > 92) iz = 92;
122 94
123 if(1 == Z) { << 95 if(ekin > thEnergy) {
124 cross = 1.0115*GetIsoCrossSection(dp,1,1); << 96 cross = theFac[iz]*fGlauber->GetInelasticGlauberGribov(dp, Z, A);
125 } else if(ekin < fLowEnergy) { <<
126 cross = (isPiplus) ? theLowEPiPlus[Z]*Coul <<
127 : theLowEPiMinus[Z]*FactorPiMinus(ekin); <<
128 } else if(ekin > fGlauberEnergy) { <<
129 cross = (isPiplus) ? theGlauberFacPiPlus[Z <<
130 cross *= fGlauber->GetInelasticGlauberGrib <<
131 } else { 97 } else {
132 cross = fPion->GetInelasticCrossSection(dp << 98 cross = fPion->GetInelasticCrossSection(dp, Z, A);
133 } 99 }
134 #ifdef G4VERBOSE << 100
135 if(verboseLevel > 1) { << 101 if(verboseLevel > 1)
136 G4cout << "G4BGGPionInelasticXS::GetCrossS 102 G4cout << "G4BGGPionInelasticXS::GetCrossSection for "
137 << dp->GetDefinition()->GetParticle << 103 << dp->GetDefinition()->GetParticleName()
138 << " Ekin(GeV)= " << dp->GetKineti << 104 << " Ekin(GeV)= " << dp->GetKineticEnergy()
139 << " in nucleus Z= " << Z << " A= << 105 << " in nucleus Z= " << Z << " A= " << A
140 << " XS(b)= " << cross/barn << 106 << " XS(b)= " << cross/barn
141 << G4endl; << 107 << G4endl;
142 } << 108
143 #endif <<
144 return cross; 109 return cross;
145 } 110 }
146 111
147 //....oooOO0OOooo........oooOO0OOooo........oo 112 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
148 113
149 G4double << 114 void G4BGGPionInelasticXS::BuildPhysicsTable(const G4ParticleDefinition&)
150 G4BGGPionInelasticXS::GetIsoCrossSection(const << 115 {
151 G4int <<
152 const <<
153 const <<
154 const <<
155 { <<
156 // this method should be called only for Z = <<
157 fHadron->HadronNucleonXscNS(dp->GetDefinitio <<
158 dp->GetKineticEn <<
159 G4double cross = A*fHadron->GetInelasticHadr <<
160 <<
161 #ifdef G4VERBOSE <<
162 if(verboseLevel > 1) { <<
163 G4cout << "G4BGGPionInelasticXS::GetCrossS <<
164 << dp->GetDefinition()->GetParticle <<
165 << " Ekin(GeV)= " << dp->GetKineti <<
166 << " in nucleus Z=1 A=" << A <<
167 << " XS(b)= " << cross/barn <<
168 << G4endl; <<
169 } <<
170 #endif <<
171 return cross; <<
172 } 116 }
173 117
174 //....oooOO0OOooo........oooOO0OOooo........oo 118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
175 119
176 void G4BGGPionInelasticXS::BuildPhysicsTable(c << 120 void G4BGGPionInelasticXS::DumpPhysicsTable(const G4ParticleDefinition&)
177 { 121 {
178 if(verboseLevel > 1) { << 122 G4cout << "G4BGGPionInelasticXS:"<<G4endl;
179 G4cout << "G4BGGPionInelasticXS::BuildPhys <<
180 << p.GetParticleName() << G4endl; <<
181 } <<
182 if(&p == G4PionPlus::PionPlus() || &p == G4P <<
183 isPiplus = (&p == G4PionPlus::PionPlus()); <<
184 } else { <<
185 G4ExceptionDescription ed; <<
186 ed << "This BGG cross section is applicabl <<
187 << p.GetParticleName() << G4endl; <<
188 G4Exception("G4BGGPionInelasticXS::BuildPh <<
189 FatalException, ed); <<
190 } <<
191 } 123 }
192 124
193 //....oooOO0OOooo........oooOO0OOooo........oo 125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
194 126
195 void G4BGGPionInelasticXS::Initialise() << 127 void G4BGGPionInelasticXS::Initialise()
196 { 128 {
197 theA[0] = theA[1] = 1; << 129 G4ParticleDefinition* part = const_cast<G4ParticleDefinition*>(particle);
198 G4ThreeVector mom(0.0,0.0,1.0); 130 G4ThreeVector mom(0.0,0.0,1.0);
199 G4DynamicParticle dp(thePiPlus, mom, fGlaube << 131 G4DynamicParticle dp(part, mom, thEnergy);
200 132
201 G4NistManager* nist = G4NistManager::Instanc 133 G4NistManager* nist = G4NistManager::Instance();
>> 134 G4double A = nist->GetAtomicMassAmu(2);
>> 135
202 G4double csup, csdn; 136 G4double csup, csdn;
203 137
204 for (G4int iz=2; iz<93; ++iz) { << 138 if(verboseLevel > 0) G4cout << "### G4BGGPionInelasticXS::Initialise for "
205 G4int A = G4lrint(nist->GetAtomicMassAmu(i << 139 << particle->GetParticleName() << G4endl;
206 theA[iz] = A; <<
207 <<
208 csup = fGlauber->GetInelasticGlauberGribov <<
209 csdn = fPion->GetInelasticCrossSection(&dp <<
210 theGlauberFacPiPlus[iz] = csdn/csup; <<
211 } <<
212 140
213 dp.SetDefinition(G4PionMinus::PionMinus()); << 141 for(G4int iz=2; iz<93; iz++) {
214 for (G4int iz=2; iz<93; ++iz) { <<
215 csup = fGlauber->GetInelasticGlauberGribov <<
216 csdn = fPion->GetInelasticCrossSection(&dp <<
217 theGlauberFacPiMinus[iz] = csdn/csup; <<
218 <<
219 if(verboseLevel > 1) { <<
220 G4cout << "Z= " << iz << " A= " << the <<
221 << " factorPiPlus= " << theGlauberFacPi <<
222 << " factorPiMinus= " << theGlauberFacP <<
223 << G4endl; <<
224 } <<
225 } <<
226 142
227 theLowEPiPlus[1] = theLowEPiMinus[1]= 1.0; << 143 G4double Z = G4double(iz);
228 dp.SetDefinition(thePiPlus); << 144 A = nist->GetAtomicMassAmu(iz);
229 dp.SetKineticEnergy(fLowEnergy); <<
230 for (G4int iz=2; iz<93; ++iz) { <<
231 theLowEPiPlus[iz] = fPion->GetInelasticCro <<
232 /CoulombFactorPiPlus(fLowEnergy, iz); <<
233 } <<
234 145
235 dp.SetDefinition(G4PionMinus::PionMinus()); << 146 csup = fGlauber->GetInelasticGlauberGribov(&dp, Z, A);
236 for (G4int iz=2; iz<93; ++iz) { << 147 csdn = fPion->GetInelasticCrossSection(&dp, Z, A);
237 theLowEPiMinus[iz] = fPion->GetInelasticCr <<
238 /FactorPiMinus(fLowEnergy); <<
239 <<
240 if (verboseLevel > 1) { <<
241 G4cout << "Z= " << iz << " A= " << the <<
242 << " LowEtorPiPlus= " << theLowEPiPlus[ <<
243 << " LowEtorPiMinus= " << theLowEPiMinu <<
244 << G4endl; <<
245 } <<
246 } <<
247 } <<
248 148
249 //....oooOO0OOooo........oooOO0OOooo........oo << 149 theFac[iz] = csdn/csup;
250 << 150 if(verboseLevel > 0) G4cout << "Z= " << Z << " A= " << A
251 G4double G4BGGPionInelasticXS::CoulombFactorPi << 151 << " factor= " << theFac[iz] << G4endl;
252 { << 152 }
253 return (kinEnergy > 0.0) ? <<
254 G4NuclearRadii::CoulombFactor(Z, theA[Z], <<
255 } <<
256 <<
257 //....oooOO0OOooo........oooOO0OOooo........oo <<
258 <<
259 G4double G4BGGPionInelasticXS::FactorPiMinus(G <<
260 { <<
261 return 1.0/std::sqrt(kinEnergy); <<
262 } 153 }
263 154
264 //....oooOO0OOooo........oooOO0OOooo........oo 155 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
265 156
266 void <<
267 G4BGGPionInelasticXS::CrossSectionDescription( <<
268 { <<
269 outFile << "The Barashenkov-Glauber-Gribov c <<
270 << "pion scattering from nuclei at a <<
271 << "parameterization is used below 9 <<
272 << "parameterization is used above 9 <<
273 } <<
274 157
275 //....oooOO0OOooo........oooOO0OOooo........oo <<
276 158