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>> 26 // $Id: G4BGGNucleonInelasticXS.cc,v 1.1 2007/03/13 15:19:30 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-08-03-patch-02 $
>> 28 //
26 // ------------------------------------------- 29 // -------------------------------------------------------------------
27 // 30 //
28 // GEANT4 Class file 31 // GEANT4 Class file
29 // 32 //
30 // 33 //
31 // File name: G4BGGNucleonInelasticXS 34 // File name: G4BGGNucleonInelasticXS
32 // 35 //
33 // Author: Vladimir Ivanchenko 36 // Author: Vladimir Ivanchenko
34 // 37 //
35 // Creation date: 13.03.2007 38 // Creation date: 13.03.2007
36 // Modifications: 39 // Modifications:
37 // 40 //
38 // 41 //
39 // ------------------------------------------- 42 // -------------------------------------------------------------------
40 // 43 //
41 44
42 #include "G4BGGNucleonInelasticXS.hh" 45 #include "G4BGGNucleonInelasticXS.hh"
43 #include "G4SystemOfUnits.hh" << 46 #include "G4GlauberGribovCrossSection.hh"
44 #include "G4ComponentGGHadronNucleusXsc.hh" <<
45 #include "G4NucleonNuclearCrossSection.hh" 47 #include "G4NucleonNuclearCrossSection.hh"
46 #include "G4HadronNucleonXsc.hh" <<
47 #include "G4ComponentSAIDTotalXS.hh" <<
48 #include "G4Proton.hh" 48 #include "G4Proton.hh"
49 #include "G4Neutron.hh" 49 #include "G4Neutron.hh"
50 #include "G4NistManager.hh" 50 #include "G4NistManager.hh"
51 #include "G4Material.hh" <<
52 #include "G4Element.hh" <<
53 #include "G4Isotope.hh" <<
54 #include "G4Log.hh" <<
55 #include "G4Exp.hh" <<
56 #include "G4NuclearRadii.hh" <<
57 51
58 //....oooOO0OOooo........oooOO0OOooo........oo 52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
59 53
60 namespace << 54 G4BGGNucleonInelasticXS::G4BGGNucleonInelasticXS(const G4ParticleDefinition* p)
61 { <<
62 const G4double llog10 = G4Log(10.); <<
63 } <<
64 <<
65 G4double G4BGGNucleonInelasticXS::theGlauberFa <<
66 G4double G4BGGNucleonInelasticXS::theCoulombFa <<
67 G4double G4BGGNucleonInelasticXS::theGlauberFa <<
68 G4double G4BGGNucleonInelasticXS::theCoulombFa <<
69 G4int G4BGGNucleonInelasticXS::theA[93] = {0}; <<
70 <<
71 G4BGGNucleonInelasticXS::G4BGGNucleonInelastic <<
72 : G4VCrossSectionDataSet("BarashenkovGlauberG <<
73 { 55 {
74 verboseLevel = 0; 56 verboseLevel = 0;
75 fGlauberEnergy = 91.*CLHEP::GeV; << 57 thEnergy = 100.*GeV;
76 fLowEnergy = 14.*CLHEP::MeV; << 58 if(p == G4Proton::Proton() || p == G4Neutron::Neutron()) {
77 << 59 fNucleon = new G4NucleonNuclearCrossSection();
78 fNucleon = new G4NucleonNuclearCrossSection( << 60 fGlauber = new G4GlauberGribovCrossSection();
79 fGlauber = new G4ComponentGGHadronNucleusXsc << 61 particle = p;
80 fHadron = new G4HadronNucleonXsc(); << 62 Initialise();
81 << 63 } else {
82 theProton= G4Proton::Proton(); << 64 fNucleon = 0;
83 isProton = (theProton == p); << 65 fGlauber = 0;
84 SetForAllAtomsAndEnergies(true); << 66 particle = 0;
85 << 67 if(p) G4cout << "### G4BGGNucleonInelasticXS WARNING: is not applicable to "
86 if (0 == theA[0]) { Initialise(); } << 68 << p->GetParticleName()
>> 69 << G4endl;
>> 70 else G4cout << "### G4BGGNucleonInelasticXS WARNING: particle is not defined "
>> 71 << G4endl;
>> 72 }
87 } 73 }
88 74
89 //....oooOO0OOooo........oooOO0OOooo........oo 75 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
90 76
91 G4BGGNucleonInelasticXS::~G4BGGNucleonInelasti 77 G4BGGNucleonInelasticXS::~G4BGGNucleonInelasticXS()
92 { 78 {
93 delete fHadron; << 79 delete fGlauber;
94 } << 80 delete fNucleon;
95 <<
96 //....oooOO0OOooo........oooOO0OOooo........oo <<
97 <<
98 G4bool G4BGGNucleonInelasticXS::IsElementAppli <<
99 <<
100 { <<
101 return true; <<
102 } 81 }
103 82
104 //....oooOO0OOooo........oooOO0OOooo........oo 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
105 84
106 G4bool G4BGGNucleonInelasticXS::IsIsoApplicabl << 85 G4double G4BGGNucleonInelasticXS::GetIsoZACrossSection(const G4DynamicParticle* dp,
107 << 86 G4double Z,
108 << 87 G4double A,
109 << 88 G4double)
110 { <<
111 return (1 == Z); <<
112 } <<
113 <<
114 //....oooOO0OOooo........oooOO0OOooo........oo <<
115 <<
116 G4double <<
117 G4BGGNucleonInelasticXS::GetElementCrossSectio <<
118 <<
119 { 89 {
120 G4double cross = 0.0; 90 G4double cross = 0.0;
121 G4double ekin = dp->GetKineticEnergy(); 91 G4double ekin = dp->GetKineticEnergy();
122 G4int Z = std::min(ZZ, 92); << 92 G4int iz = G4int(Z + 0.5);
123 if (1 == Z) { << 93 if(iz > 92) iz = 92;
124 cross = 1.0115*GetIsoCrossSection(dp,1,1); << 94
>> 95 if(ekin > thEnergy) {
>> 96 cross = theFac[iz]*fGlauber->GetInelasticGlauberGribov(dp, Z, A);
125 } else { 97 } else {
126 if (ekin <= fLowEnergy) { << 98 cross = fNucleon->GetIsoZACrossSection(dp, Z, A);
127 cross = CoulombFactor(ekin, Z); <<
128 cross *= (isProton) ? theCoulombFacP[Z] <<
129 } else if (ekin > fGlauberEnergy) { <<
130 cross = fGlauber->GetInelasticGlauberGri <<
131 cross *= (isProton) ? theGlauberFacP[Z] <<
132 } else { <<
133 cross = fNucleon->GetElementCrossSection <<
134 } <<
135 } 99 }
136 100
137 #ifdef G4VERBOSE << 101 if(verboseLevel > 1)
138 if (verboseLevel > 1) { <<
139 G4cout << "G4BGGNucleonInelasticXS::GetCro 102 G4cout << "G4BGGNucleonInelasticXS::GetCrossSection for "
140 << dp->GetDefinition()->GetParticle << 103 << dp->GetDefinition()->GetParticleName()
141 << " Ekin(GeV)= " << dp->GetKineti << 104 << " Ekin(GeV)= " << dp->GetKineticEnergy()
142 << " in nucleus Z= " << Z << " A= << 105 << " in nucleus Z= " << Z << " A= " << A
143 << " XS(b)= " << cross/barn << 106 << " XS(b)= " << cross/barn
144 << G4endl; << 107 << G4endl;
145 } << 108
146 #endif <<
147 return cross; 109 return cross;
148 } 110 }
149 111
150 //....oooOO0OOooo........oooOO0OOooo........oo 112 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
151 113
152 G4double << 114 void G4BGGNucleonInelasticXS::BuildPhysicsTable(const G4ParticleDefinition&)
153 G4BGGNucleonInelasticXS::GetIsoCrossSection(co <<
154 G4int, <<
155 const G <<
156 const G <<
157 const G <<
158 { 115 {
159 // this method should be called only for Z = <<
160 fHadron->HadronNucleonXscNS(dp->GetDefinitio <<
161 dp->GetKineticEnerg <<
162 G4double cross = A*fHadron->GetInelasticHadr <<
163 <<
164 #ifdef G4VERBOSE <<
165 if(verboseLevel > 1) { <<
166 G4cout << "G4BGGNucleonInelasticXS::GetIso <<
167 << dp->GetDefinition()->GetParticle <<
168 << " Ekin(GeV)= " << dp->GetKineti <<
169 << " in nucleus Z=1 A=" << A <<
170 << " XS(b)= " << cross/barn <<
171 << G4endl; <<
172 } <<
173 #endif <<
174 return cross; <<
175 } 116 }
176 117
177 //....oooOO0OOooo........oooOO0OOooo........oo 118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
178 119
179 void G4BGGNucleonInelasticXS::BuildPhysicsTabl << 120 void G4BGGNucleonInelasticXS::DumpPhysicsTable(const G4ParticleDefinition&)
180 { 121 {
181 if(&p == theProton || &p == G4Neutron::Neutr << 122 G4cout << "G4BGGNucleonInelasticXS:"<<G4endl;
182 isProton = (theProton == &p); <<
183 } else { <<
184 G4ExceptionDescription ed; <<
185 ed << "This BGG cross section is applicabl <<
186 << p.GetParticleName() << G4endl; <<
187 G4Exception("G4BGGNucleonInelasticXS::Buil <<
188 FatalException, ed); <<
189 return; <<
190 } <<
191 } 123 }
192 124
193 //....oooOO0OOooo........oooOO0OOooo........oo 125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
194 126
195 void G4BGGNucleonInelasticXS::Initialise() << 127 void G4BGGNucleonInelasticXS::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(theProton, mom, fGlaube << 131 G4DynamicParticle dp(part, mom, thEnergy);
200 132
201 G4NistManager* nist = G4NistManager::Instanc 133 G4NistManager* nist = G4NistManager::Instance();
202 G4double csup, csdn; << 134 G4double A = nist->GetAtomicMassAmu(2);
203 <<
204 for (G4int iz=2; iz<93; ++iz) { <<
205 <<
206 G4int A = G4lrint(nist->GetAtomicMassAmu(i <<
207 theA[iz] = A; <<
208 <<
209 csup = fGlauber->GetInelasticGlauberGribov <<
210 csdn = fNucleon->GetElementCrossSection(&d <<
211 theGlauberFacP[iz] = csdn/csup; <<
212 } <<
213 <<
214 dp.SetDefinition(G4Neutron::Neutron()); <<
215 for (G4int iz=2; iz<93; ++iz) { <<
216 csup = fGlauber->GetInelasticGlauberGribov <<
217 csdn = fNucleon->GetElementCrossSection(&d <<
218 theGlauberFacN[iz] = csdn/csup; <<
219 <<
220 if(verboseLevel > 1) { <<
221 G4cout << "G4BGGNucleonInelasticXS::Init <<
222 << " GFactorP= " << theGlauberFacP[iz] <<
223 << " GFactorN= " << theGlauberFacN[iz] <<
224 } <<
225 } <<
226 135
227 theCoulombFacP[1] = theCoulombFacN[1] = 1.0; << 136 G4double csup, csdn;
228 dp.SetDefinition(theProton); <<
229 dp.SetKineticEnergy(fLowEnergy); <<
230 for (G4int iz=2; iz<93; ++iz) { <<
231 theCoulombFacP[iz] = fNucleon->GetElementC <<
232 /CoulombFactor(fLowEnergy, iz); <<
233 } <<
234 dp.SetDefinition(G4Neutron::Neutron()); <<
235 for (G4int iz=2; iz<93; ++iz) { <<
236 theCoulombFacN[iz] = fNucleon->GetElementC <<
237 /CoulombFactor(fLowEnergy, iz); <<
238 <<
239 if (verboseLevel > 1) { <<
240 G4cout << "G4BGGNucleonInelasticXS::Init <<
241 << " CFactorP= " << theCoulombFacP[iz] <<
242 << " CFactorN= " << theCoulombFacN[iz] <<
243 } <<
244 } <<
245 } <<
246 137
247 //....oooOO0OOooo........oooOO0OOooo........oo << 138 if(verboseLevel > 0) G4cout << "### G4BGGNucleonInelasticXS::Initialise for "
>> 139 << particle->GetParticleName() << G4endl;
248 140
249 G4double G4BGGNucleonInelasticXS::CoulombFacto << 141 for(G4int iz=2; iz<93; iz++) {
250 { <<
251 G4double res = 0.0; <<
252 142
253 if(kinEnergy <= 0.0) { return res; } << 143 G4double Z = G4double(iz);
>> 144 A = nist->GetAtomicMassAmu(iz);
254 145
255 G4double elog = G4Log(kinEnergy/GeV)/llog10; << 146 csup = fGlauber->GetInelasticGlauberGribov(&dp, Z, A);
256 G4double aa = theA[Z]; << 147 csdn = fNucleon->GetIsoZACrossSection(&dp, Z, A);
257 <<
258 if(isProton) { <<
259 <<
260 res = G4NuclearRadii::CoulombFactor(Z, aa, <<
261 <<
262 // from G4ProtonInelasticCrossSection <<
263 if(res > 0.0) { <<
264 G4double ff1 = 5.6 - 0.016*aa; // slope <<
265 G4double ff2 = 1.37 + 1.37/aa; // start <<
266 G4double ff3 = 0.8 + 18./aa - 0.002*aa; <<
267 res *= (1.0 + ff3*(1.0 - (1.0/(1+G4Exp(- <<
268 ff1 = 8. - 8./aa - 0.008*aa; // slope <<
269 ff2 = 2.34 - 5.4/aa - 0.0028*aa; // star <<
270 res /= (1.0 + G4Exp(-ff1*(elog + ff2))); <<
271 } <<
272 } else { <<
273 // from G4NeutronInelasticCrossSection <<
274 G4double p3 = 0.6 + 13./aa - 0.0005*aa; <<
275 G4double p4 = 7.2449 - 0.018242*aa; <<
276 G4double p5 = 1.36 + 1.8/aa + 0.0005*aa; <<
277 G4double p6 = 1. + 200./aa + 0.02*aa; <<
278 G4double p7 = 3.0 - (aa-70.)*(aa-200.)/110 <<
279 <<
280 G4double firstexp = G4Exp(-p4*(elog + p5) <<
281 G4double secondexp = G4Exp(-p6*(elog + p7) <<
282 148
283 res = (1. + p3*firstexp/(1. + firstexp))/( << 149 theFac[iz] = csdn/csup;
>> 150 if(verboseLevel > 0) G4cout << "Z= " << Z << " A= " << A
>> 151 << " factor= " << theFac[iz] << G4endl;
284 } 152 }
285 return res; <<
286 } 153 }
287 154
288 //....oooOO0OOooo........oooOO0OOooo........oo 155 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
289 156
290 void G4BGGNucleonInelasticXS::CrossSectionDesc <<
291 { <<
292 outFile << "The Barashenkov-Glauber-Gribov c <<
293 << "scattering of protons and neutro <<
294 << "Barashenkov parameterization bel <<
295 << "parameterization above 91 GeV. <<
296 << "cross section component for hydr <<
297 << "G4ComponentGGHadronNucleusXsc co <<
298 } <<
299 157
300 //....oooOO0OOooo........oooOO0OOooo........oo <<
301 158