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25 // 25 //
26 // Calculation of the total, elastic and inel 26 // Calculation of the total, elastic and inelastic cross-sections
27 // of anti-nucleon and anti-nucleus interacti 27 // of anti-nucleon and anti-nucleus interactions with nuclei
28 // based on Glauber approach and V. Grishine 28 // based on Glauber approach and V. Grishine formulaes for
29 // interpolations (ref. V.M.Grichine, Eur.Phy 29 // interpolations (ref. V.M.Grichine, Eur.Phys.J., C62(2009) 399;
30 // NIM, B267 (2009) 2460) and our parametriza 30 // NIM, B267 (2009) 2460) and our parametrization of hadron-nucleon
31 // cross-sections 31 // cross-sections
32 // 32 //
33 // 33 //
34 // Created by A.Galoyan and V. Uzhinsky, 18. 34 // Created by A.Galoyan and V. Uzhinsky, 18.11.2010
35 35
36 36
37 #include "G4ComponentAntiNuclNuclearXS.hh" 37 #include "G4ComponentAntiNuclNuclearXS.hh"
38 38
39 #include "G4PhysicalConstants.hh" <<
40 #include "G4SystemOfUnits.hh" <<
41 #include "G4ParticleTable.hh" 39 #include "G4ParticleTable.hh"
42 #include "G4IonTable.hh" 40 #include "G4IonTable.hh"
43 #include "G4ParticleDefinition.hh" 41 #include "G4ParticleDefinition.hh"
44 #include "G4HadronicException.hh" <<
45 42
>> 43 ///////////////////////////////////////////////////////////////////////////////
46 44
47 ////////////////////////////////////////////// <<
48 45
49 G4ComponentAntiNuclNuclearXS::G4ComponentAntiN 46 G4ComponentAntiNuclNuclearXS::G4ComponentAntiNuclNuclearXS()
50 : G4VComponentCrossSection("AntiAGlauber"), << 47 : G4VComponentCrossSection("AntiAGlauber"), fUpperLimit( 10000 * GeV ),
51 fRadiusEff(0.0), << 48 fLowerLimit( 10 * MeV )
52 fTotalXsc(0.0), fElasticXsc(0.0), fInelastic <<
53 fAntiHadronNucleonTotXsc(0.0), fAntiHadronNu <<
54 Elab(0.0), S(0.0), SqrtS(0) <<
55 { 49 {
56 theAProton = G4AntiProton::AntiProton(); << 50 theAProton = G4AntiProton::AntiProton();
57 theANeutron = G4AntiNeutron::AntiNeutron(); << 51 theANeutron = G4AntiNeutron::AntiNeutron();
58 theADeuteron = G4AntiDeuteron::AntiDeuteron( << 52 theADeuteron = G4AntiDeuteron::AntiDeuteron();
59 theATriton = G4AntiTriton::AntiTriton(); << 53 theATriton = G4AntiTriton::AntiTriton();
60 theAAlpha = G4AntiAlpha::AntiAlpha(); << 54 theAAlpha = G4AntiAlpha::AntiAlpha();
61 theAHe3 = G4AntiHe3::AntiHe3(); << 55 theAHe3 = G4AntiHe3::AntiHe3();
62 Mn = 0.93827231; // GeV << 56
63 b0 = 11.92; // GeV^(-2) << 57 Mn = 0.93827231; // GeV
64 b2 = 0.3036; // GeV^(-2) << 58 b0 = 11.92; // GeV^(-2)
65 SqrtS0 = 20.74; // GeV << 59 b2 = 0.3036; // GeV^(-2)
66 S0 = 33.0625; // GeV^2 << 60 SqrtS0 = 20.74; // GeV
67 R0 = 1.0; // default va << 61 S0 = 33.0625; // GeV^2
68 } <<
69 62
>> 63 }
70 64
71 ////////////////////////////////////////////// << 65 ///////////////////////////////////////////////////////////////////////////////////////
>> 66 //
>> 67 //
72 68
73 G4ComponentAntiNuclNuclearXS::~G4ComponentAnti 69 G4ComponentAntiNuclNuclearXS::~G4ComponentAntiNuclNuclearXS()
74 { 70 {
75 } 71 }
76 72
>> 73 ////////////////////////////////////////////////////////////////////////////////
77 74
78 ////////////////////////////////////////////// << 75 void
>> 76 G4ComponentAntiNuclNuclearXS::CrossSectionDescription(std::ostream& outFile) const
>> 77 {
>> 78 outFile << "G4ComponentAntiNuclNuclearXS describes the total, elastic\n"
>> 79 << "and inelastic cross sections for the scattering of light\n"
>> 80 << "antinuclei from nuclei using the Glauber approach and Grichine\n"
>> 81 << "parameterization. It is valid from 10 MeV to 10 TeV incident\n"
>> 82 << "energies and applies to antiprotons, antineutrons, antideuterons,\n"
>> 83 << "anti3He, antitritons and antialphas. This is a cross section\n"
>> 84 << "component which is to be used as part of a cross section data\n"
>> 85 << "set.\n";
>> 86 }
>> 87
>> 88 ////////////////////////////////////////////////////////////////////////////////
79 // 89 //
80 // Calculation of total CrossSection of Anti-N 90 // Calculation of total CrossSection of Anti-Nucleus - Nucleus
81 91
>> 92
82 G4double G4ComponentAntiNuclNuclearXS::GetTota 93 G4double G4ComponentAntiNuclNuclearXS::GetTotalElementCrossSection
83 (const G4ParticleDefinition* aParticle, G4doub 94 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4double A)
84 { 95 {
85 if ( aParticle == nullptr ) { << 96 G4double xsection, sigmaTotal, sigmaElastic;
86 G4ExceptionDescription ed; << 97
87 ed << "anti-nucleus with nullptr particle << 98 const G4ParticleDefinition* theParticle = aParticle;
88 G4Exception( "G4ComponentAntiNuclNuclearXS << 99
89 "antiNuclNuclearXS001", JustW << 100 sigmaTotal = GetAntiHadronNucleonTotCrSc(theParticle,kinEnergy);
90 return 0.0; << 101 sigmaElastic = GetAntiHadronNucleonElCrSc(theParticle,kinEnergy);
91 } <<
92 <<
93 const G4ParticleDefinition* theParticle = aP <<
94 G4double sigmaTotal = GetAntiHadronNucleonTo <<
95 102
96 // calculation of squared radius of NN-coll << 103 // calculation of squared radius of NN-collision
97 G4int i(-1), j(-1); << 104 fRadiusNN2=sigmaTotal*sigmaTotal*0.1/(8.*sigmaElastic*pi) ; //fm^2
98 if ( theParticle == theAProton || << 105
99 theParticle == theANeutron ) { i=0; } << 106 // calculation of effective nuclear radius for Pbar and Nbar interactions (can be changed)
100 else if ( theParticle == theADeuteron ) { i= << 107
101 else if ( theParticle == theATriton ) { i= << 108 if ( (theParticle == theAProton) || (theParticle == theANeutron) )
102 else if ( theParticle == theAHe3 ) { i= << 109 {
103 else if ( theParticle == theAAlpha ) { i= << 110 if(A==1)
104 else {}; << 111 { fTotalXsc = sigmaTotal * millibarn;
105 << 112 return fTotalXsc; }
106 if ( i < 0 && ( ! theParticle->IsAntiHypern << 113
107 G4ExceptionDescription ed; << 114 fRadiusEff = 1.34*std::pow(A,0.23)+1.35/std::pow(A,1./3.); //fm
108 ed << "Unknown anti-nucleus : " << thePart << 115
109 << "Target (Z, A)=(" << Z << "," << A < << 116 if( (Z==1) && (A==2) ) fRadiusEff = 3.800; //fm
110 G4Exception( "G4ComponentAntiNuclNuclearXS << 117 if( (Z==1) && (A==3) ) fRadiusEff = 3.300;
111 "antiNuclNuclearXS002", JustW << 118 if( (Z==2) && (A==3) ) fRadiusEff = 3.300;
>> 119 if( (Z==2) && (A==4) ) fRadiusEff = 2.376;
112 } 120 }
>> 121
>> 122 //calculation of effective nuclear radius for AntiDeuteron interaction (can be changed)
>> 123 if (theParticle == theADeuteron)
>> 124 { fRadiusEff = 1.46 * std::pow(A,0.21) + 1.45 / std::pow(A,1./3.);
>> 125
>> 126 if( (Z==1) && (A==2) ) fRadiusEff = 3.238; //fm
>> 127 if( (Z==1) && (A==3) ) fRadiusEff = 3.144;
>> 128 if( (Z==2) && (A==3) ) fRadiusEff = 3.144;
>> 129 if( (Z==2) && (A==4) ) fRadiusEff = 2.544;
>> 130 }
>> 131 // calculation of effective nuclear radius for AntiHe3 interaction (can be changed)
113 132
114 G4int intA = static_cast<G4int>( A ); << 133 if( (theParticle ==theAHe3) || (theParticle ==theATriton) )
>> 134 { fRadiusEff = 1.40* std::pow(A,0.21)+1.63/std::pow(A,1./3.);
115 135
116 if ( Z == 1 && intA == 1 ) { j=0; } << 136 if( (Z==1) && (A==2) ) fRadiusEff = 3.144; //fm
117 else if ( Z == 1 && intA == 2 ) { j=1; } << 137 if( (Z==1) && (A==3) ) fRadiusEff = 3.075;
118 else if ( Z == 1 && intA == 3 ) { j=2; } << 138 if( (Z==2) && (A==3) ) fRadiusEff = 3.075;
119 else if ( Z == 2 && intA == 3 ) { j=3; } << 139 if( (Z==2) && (A==4) ) fRadiusEff = 2.589;
120 else if ( Z == 2 && intA == 4 ) { j=4; } <<
121 else {} <<
122 <<
123 if ( i < 0 && j >= 0 ) { fRadiusEff = Ref <<
124 if ( i == 0 && j == 0 ) return sigmaTotal <<
125 if ( i >= 0 && j >= 0 ) { fRadiusEff = Ref <<
126 <<
127 if ( j < 0 ) { <<
128 if ( i == 0 ) { fRadiusEff = 1.34 * <<
129 + 1.35 / <<
130 else if ( i == 1 ) { fRadiusEff = 1.46 * <<
131 + 1.45 / <<
132 else if ( i == 2 ) { fRadiusEff = 1.40 * <<
133 + 1.63 / <<
134 else if ( i == 3 ) { fRadiusEff = 1.40 * <<
135 + 1.63 / <<
136 else if ( i == 4 ) { fRadiusEff = 1.35 * <<
137 + 1.10 / <<
138 else if ( i < 0 ) { fRadiusEff = 1.35 * <<
139 + 1.10 / theG4P <<
140 else {} <<
141 } 140 }
142 141
143 G4double R2 = fRadiusEff*fRadiusEff; << 142 //calculation of effective nuclear radius for AntiAlpha interaction (can be changed)
144 G4double ApAt = std::abs(theParticle->GetBar << 143
>> 144 if (theParticle == theAAlpha)
>> 145 {
>> 146 fRadiusEff = 1.35* std::pow(A,0.21)+1.1/std::pow(A,1./3.);
>> 147
>> 148 if( (Z==1) && (A==2) ) fRadiusEff = 2.544; //fm
>> 149 if( (Z==1) && (A==3) ) fRadiusEff = 2.589;
>> 150 if( (Z==2) && (A==3) ) fRadiusEff = 2.589;
>> 151 if( (Z==2) && (A==4) ) fRadiusEff = 2.241;
>> 152
>> 153 }
145 154
146 G4double xsection = millibarn*2.*pi*R2*10.*G << 155 G4double R2 = fRadiusEff*fRadiusEff;
147 fTotalXsc = xsection; << 156 G4double REf2 = R2+fRadiusNN2;
>> 157 G4double ApAt = std::abs(theParticle->GetBaryonNumber()) * A;
>> 158
>> 159 xsection = 2*pi*REf2*10.*std::log(1+(ApAt*sigmaTotal/(2*pi*REf2*10.))); //mb
>> 160 xsection =xsection *millibarn;
>> 161 fTotalXsc = xsection;
148 162
149 return fTotalXsc; 163 return fTotalXsc;
150 } 164 }
151 165
152 166
153 ////////////////////////////////////////////// << 167 ////////////////////////////////////////////////////////////////////////////////
154 // 168 //
155 // Calculation of total CrossSection of Anti-N 169 // Calculation of total CrossSection of Anti-Nucleus - Nucleus
156 << 170 //////////////////////////////////////////////////////////////////////////////
157 G4double G4ComponentAntiNuclNuclearXS::GetTota 171 G4double G4ComponentAntiNuclNuclearXS::GetTotalIsotopeCrossSection
158 (const G4ParticleDefinition* aParticle, G4doub 172 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4int A )
159 { << 173 { return GetTotalElementCrossSection(aParticle, kinEnergy, Z, (G4double) A); }
160 return GetTotalElementCrossSection(aParticle <<
161 } <<
162 <<
163 174
164 ////////////////////////////////////////////// << 175 ////////////////////////////////////////////////////////////////
165 // Calculation of inelastic CrossSection of An 176 // Calculation of inelastic CrossSection of Anti-Nucleus - Nucleus
>> 177 ////////////////////////////////////////////////////////////////
166 178
167 G4double G4ComponentAntiNuclNuclearXS::GetInel 179 G4double G4ComponentAntiNuclNuclearXS::GetInelasticElementCrossSection
168 (const G4ParticleDefinition* aParticle, G4doub 180 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4double A)
169 { 181 {
170 if ( aParticle == nullptr ) { << 182 G4double inelxsection, sigmaTotal, sigmaElastic;
171 G4ExceptionDescription ed; << 183
172 ed << "anti-nucleus with nullptr particle <<
173 G4Exception( "G4ComponentAntiNuclNuclearXS <<
174 "antiNuclNuclearXS003", JustW <<
175 return 0.0; <<
176 } <<
177 <<
178 const G4ParticleDefinition* theParticle = aP 184 const G4ParticleDefinition* theParticle = aParticle;
179 G4double sigmaTotal = GetAntiHadronNucleon << 185
180 G4double sigmaElastic = GetAntiHadronNucleon << 186 sigmaTotal = GetAntiHadronNucleonTotCrSc(theParticle,kinEnergy);
>> 187 sigmaElastic = GetAntiHadronNucleonElCrSc(theParticle,kinEnergy);
181 188
182 // calculation of sqr of radius NN-collision << 189 // calculation of sqr of radius NN-collision
183 G4int i(-1), j(-1); << 190 fRadiusNN2=sigmaTotal*sigmaTotal*0.1/(8.*sigmaElastic*pi); // fm^2
184 if ( theParticle == theAProton || << 191
185 theParticle == theANeutron ) { i=0; } << 192
186 else if ( theParticle == theADeuteron ) { i= << 193 // calculation of effective nuclear radius for Pbar and Nbar interaction (can be changed)
187 else if ( theParticle == theATriton ) { i= << 194
188 else if ( theParticle == theAHe3 ) { i= << 195 if ( (theParticle == theAProton) || (theParticle == theANeutron) )
189 else if ( theParticle == theAAlpha ) { i= << 196 {
190 else {}; << 197 if (A==1)
191 << 198 { fInelasticXsc = (sigmaTotal - sigmaElastic) * millibarn;
192 if ( i < 0 && ( ! theParticle->IsAntiHypern << 199 return fInelasticXsc;
193 G4ExceptionDescription ed; << 200 }
194 ed << "Unknown anti-nucleus : " << thePart << 201 fRadiusEff = 1.31*std::pow(A, 0.22)+0.9/std::pow(A, 1./3.); //fm
195 << "Target (Z, A)=(" << Z << "," << A < << 202
196 G4Exception( "G4ComponentAntiNuclNuclearXS << 203 if( (Z==1) && (A==2) ) fRadiusEff = 3.582; //fm
197 "antiNuclNuclearXS004", JustW << 204 if( (Z==1) && (A==3) ) fRadiusEff = 3.105;
>> 205 if( (Z==2) && (A==3) ) fRadiusEff = 3.105;
>> 206 if( (Z==2) && (A==4) ) fRadiusEff = 2.209;
198 } 207 }
199 208
200 G4int intA = static_cast<G4int>( A ); << 209 //calculation of effective nuclear radius for AntiDeuteron interaction (can be changed)
201 210
202 if ( Z == 1 && intA == 1 ) { j=0; } << 211 if (theParticle ==theADeuteron)
203 else if ( Z == 1 && intA == 2 ) { j=1; } << 212 {
204 else if ( Z == 1 && intA == 3 ) { j=2; } << 213 fRadiusEff = 1.38*std::pow(A, 0.21)+1.55/std::pow(A, 1./3.);
205 else if ( Z == 2 && intA == 3 ) { j=3; } << 214
206 else if ( Z == 2 && intA == 4 ) { j=4; } << 215 if( (Z==1) && (A==2) ) fRadiusEff = 3.169; //fm
207 else {} << 216 if( (Z==1) && (A==3) ) fRadiusEff = 3.066;
208 << 217 if( (Z==2) && (A==3) ) fRadiusEff = 3.066;
209 if ( i < 0 && j >= 0 ) { fRadiusEff = Ref << 218 if( (Z==2) && (A==4) ) fRadiusEff = 2.498;
210 if ( i == 0 && j == 0 ) return (sigmaTotal <<
211 if ( i >= 0 && j >= 0 ) { fRadiusEff = Ref <<
212 <<
213 if ( j < 0) { <<
214 if ( i == 0 ) { fRadiusEff = 1.31*th <<
215 + 0.90/th <<
216 else if ( i == 1 ) { fRadiusEff = 1.38*th <<
217 + 1.55/th <<
218 else if ( i == 2 ) { fRadiusEff = 1.34*th <<
219 + 1.51/th <<
220 else if ( i == 3 ) { fRadiusEff = 1.34*th <<
221 + 1.51/th <<
222 else if ( i == 4 ) { fRadiusEff = 1.30*th <<
223 + 1.05/th <<
224 else if ( i < 0 ) { fRadiusEff = 1.30*th <<
225 + 1.05/th <<
226 else {} <<
227 } 219 }
228 220
229 G4double R2 = fRadiusEff*fRadiusEff; << 221 //calculation of effective nuclear radius for AntiHe3 interaction (can be changed)
230 G4double ApAt = std::abs(theParticle->GetBar << 222
>> 223 if( (theParticle ==theAHe3) || (theParticle ==theATriton) )
>> 224 {
>> 225 fRadiusEff = 1.34 * std::pow(A, 0.21)+1.51/std::pow(A, 1./3.);
>> 226
>> 227 if( (Z==1) && (A==2) ) fRadiusEff = 3.066; //fm
>> 228 if( (Z==1) && (A==3) ) fRadiusEff = 2.973;
>> 229 if( (Z==2) && (A==3) ) fRadiusEff = 2.973;
>> 230 if( (Z==2) && (A==4) ) fRadiusEff = 2.508;
>> 231
>> 232 }
231 233
232 G4double inelxsection = millibarn*pi*R2*10.* << 234 //calculation of effective nuclear radius for AntiAlpha interaction (can be changed)
233 fInelasticXsc = inelxsection; <<
234 235
>> 236 if (theParticle == theAAlpha)
>> 237 {
>> 238 fRadiusEff = 1.3*std::pow(A, 0.21)+1.05/std::pow(A, 1./3.);
>> 239
>> 240 if( (Z==1) && (A==2) ) fRadiusEff = 2.498; //fm
>> 241 if( (Z==1) && (A==3) ) fRadiusEff = 2.508;
>> 242 if( (Z==2) && (A==3) ) fRadiusEff = 2.508;
>> 243 if( (Z==2) && (A==4) ) fRadiusEff = 2.158;
>> 244 }
>> 245 G4double R2 = fRadiusEff*fRadiusEff;
>> 246 G4double REf2 = R2+fRadiusNN2;
>> 247 G4double ApAt= std::abs(theParticle->GetBaryonNumber()) * A;
>> 248
>> 249 inelxsection = pi*REf2 *10* std::log(1+(ApAt*sigmaTotal/(pi*REf2*10.))); //mb
>> 250 inelxsection = inelxsection * millibarn;
>> 251 fInelasticXsc = inelxsection;
235 return fInelasticXsc; 252 return fInelasticXsc;
236 } 253 }
237 254
238 << 255 ///////////////////////////////////////////////////////////////////////////////
239 ////////////////////////////////////////////// <<
240 // 256 //
241 // Calculates Inelastic Anti-nucleus-Nucleus c 257 // Calculates Inelastic Anti-nucleus-Nucleus cross-section
242 << 258 //
243 G4double G4ComponentAntiNuclNuclearXS::GetInel 259 G4double G4ComponentAntiNuclNuclearXS::GetInelasticIsotopeCrossSection
244 (const G4ParticleDefinition* aParticle, G4doub 260 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4int A)
245 { << 261 {return GetInelasticElementCrossSection(aParticle, kinEnergy, Z, (G4double) A); }
246 return GetInelasticElementCrossSection(aPart << 262
247 } <<
248 263
249 264
250 ////////////////////////////////////////////// << 265 ///////////////////////////////////////////////////////////////////////////////
251 // 266 //
252 // Calculates elastic Anti-nucleus-Nucleus cro 267 // Calculates elastic Anti-nucleus-Nucleus cross-section as Total - Inelastic
253 << 268 //
254 G4double G4ComponentAntiNuclNuclearXS::GetElas 269 G4double G4ComponentAntiNuclNuclearXS::GetElasticElementCrossSection
255 (const G4ParticleDefinition* aParticle, G4doub 270 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4double A)
256 { 271 {
257 fElasticXsc = GetTotalElementCrossSection(aP << 272 fElasticXsc = GetTotalElementCrossSection(aParticle, kinEnergy, Z, A)-
258 GetInelasticElementCrossSectio << 273 GetInelasticElementCrossSection(aParticle, kinEnergy, Z, A);
259 if (fElasticXsc < 0.) fElasticXsc = 0.; << 274
260 return fElasticXsc; << 275 if (fElasticXsc < 0.) fElasticXsc = 0.;
261 } <<
262 276
>> 277 return fElasticXsc;
>> 278 }
263 279
264 ////////////////////////////////////////////// << 280 ///////////////////////////////////////////////////////////////////////////////
265 // 281 //
266 // Calculates elastic Anti-nucleus-Nucleus cro 282 // Calculates elastic Anti-nucleus-Nucleus cross-section
267 << 283 //
268 G4double G4ComponentAntiNuclNuclearXS::GetElas 284 G4double G4ComponentAntiNuclNuclearXS::GetElasticIsotopeCrossSection
269 (const G4ParticleDefinition* aParticle, G4doub 285 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4int A)
270 { << 286 { return GetElasticElementCrossSection(aParticle, kinEnergy, Z, (G4double) A); }
271 return GetElasticElementCrossSection(aPartic <<
272 } <<
273 287
274 288
275 ////////////////////////////////////////////// << 289 ///////////////////////////////////////////////////////////////////////////////////
276 // Calculation of Antihadron - hadron Total C 290 // Calculation of Antihadron - hadron Total Cross-section
277 291
278 G4double G4ComponentAntiNuclNuclearXS::GetAnti 292 G4double G4ComponentAntiNuclNuclearXS::GetAntiHadronNucleonTotCrSc
279 (const G4ParticleDefinition* aParticle, G4doub 293 (const G4ParticleDefinition* aParticle, G4double kinEnergy)
280 { 294 {
281 G4double xsection, Pmass, Energy, momentum; 295 G4double xsection, Pmass, Energy, momentum;
282 const G4ParticleDefinition* theParticle = aP 296 const G4ParticleDefinition* theParticle = aParticle;
283 Pmass=theParticle->GetPDGMass(); 297 Pmass=theParticle->GetPDGMass();
284 Energy=Pmass+kinEnergy; 298 Energy=Pmass+kinEnergy;
285 momentum=std::sqrt(Energy*Energy-Pmass*Pmass 299 momentum=std::sqrt(Energy*Energy-Pmass*Pmass)/std::abs(theParticle->GetBaryonNumber());
286 G4double Plab = momentum / GeV; << 300 G4double Plab = momentum / GeV/std::abs(aParticle->GetBaryonNumber()); // Uzhi 24 Nov. 2011
>> 301
>> 302 if(Plab < 0.1) { Plab = 0.1; } // Uzhi 24 Nov. 2011
287 303
288 G4double B, SigAss; 304 G4double B, SigAss;
289 G4double C, d1, d2, d3; << 305 G4double C, d1, d2, d3 ;
>> 306
290 Elab = std::sqrt(Mn*Mn + Plab*Plab); / 307 Elab = std::sqrt(Mn*Mn + Plab*Plab); // GeV
291 S = 2.*Mn*Mn + 2. *Mn*Elab; / 308 S = 2.*Mn*Mn + 2. *Mn*Elab; // GeV^2
292 SqrtS = std::sqrt(S); / 309 SqrtS = std::sqrt(S); // GeV
293 B = b0+b2*G4Log(SqrtS/SqrtS0)*G4Log(S << 310
294 SigAss = 36.04 +0.304*G4Log(S/S0)*G4Log(S/ << 311 B = b0+b2*std::log(SqrtS/SqrtS0)*std::log(SqrtS/SqrtS0); //GeV^(-2)
>> 312 SigAss = 36.04 +0.304*std::log(S/S0)*std::log(S/S0); //mb
295 R0 = std::sqrt(0.40874044*SigAss - B); 313 R0 = std::sqrt(0.40874044*SigAss - B); //GeV^(-2)
>> 314
296 C = 13.55; 315 C = 13.55;
297 d1 = -4.47; 316 d1 = -4.47;
298 d2 = 12.38; 317 d2 = 12.38;
299 d3 = -12.43; 318 d3 = -12.43;
>> 319 xsection = SigAss*(1 + 1./(std::sqrt(S-4.*Mn*Mn)) / (std::pow(R0, 3.))
>> 320 *C* (1+d1/SqrtS+d2/(std::pow(SqrtS,2.))+d3/(std::pow(SqrtS,3.)) ));
300 321
301 xsection = SigAss * ( 1 + 1./(std::sqrt(S-4. << 322 // xsection *= millibarn;
302 * C * ( 1 + d1/SqrtS + <<
303 + d3/(theG4Pow <<
304 323
305 //xsection *= millibarn; <<
306 fAntiHadronNucleonTotXsc = xsection; 324 fAntiHadronNucleonTotXsc = xsection;
307 <<
308 return fAntiHadronNucleonTotXsc; 325 return fAntiHadronNucleonTotXsc;
309 } 326 }
310 327
311 328
312 // /////////////////////////////////////////// << 329 //
>> 330 // /////////////////////////////////////////////////////////////////////////////////
313 // Calculation of Antihadron - hadron Elastic 331 // Calculation of Antihadron - hadron Elastic Cross-section
314 332
315 G4double G4ComponentAntiNuclNuclearXS :: 333 G4double G4ComponentAntiNuclNuclearXS ::
316 GetAntiHadronNucleonElCrSc(const G4ParticleDef 334 GetAntiHadronNucleonElCrSc(const G4ParticleDefinition* aParticle, G4double kinEnergy)
317 { 335 {
318 G4double xsection; << 336 G4double xsection;
319 G4double SigAss; <<
320 G4double C, d1, d2, d3; <<
321 GetAntiHadronNucleonTotCrSc(aParticle,kinEne <<
322 SigAss = 4.5 + 0.101*G4Log(S/S0)*G4Log(S/S <<
323 C = 59.27; <<
324 d1 = -6.95; <<
325 d2 = 23.54; <<
326 d3 = -25.34; <<
327 <<
328 xsection = SigAss * ( 1 + 1. / (std::sqrt(S- <<
329 * C * ( 1 + d1/SqrtS + <<
330 + d3/(theG4Pow <<
331 337
332 //xsection *= millibarn; << 338 G4double SigAss;
333 fAntiHadronNucleonElXsc = xsection; << 339 G4double C, d1, d2, d3 ;
334 340
335 return fAntiHadronNucleonElXsc; << 341 GetAntiHadronNucleonTotCrSc(aParticle,kinEnergy);
336 } <<
337 342
>> 343 SigAss = 4.5 + 0.101*std::log(S/S0)*std::log(S/S0); //mb
>> 344
>> 345 C = 59.27;
>> 346 d1 = -6.95;
>> 347 d2 = 23.54;
>> 348 d3 = -25.34;
338 349
339 ////////////////////////////////////////////// << 350 xsection = SigAss* (1 + 1. / (std::sqrt(S-4.*Mn*Mn)) / (std::pow(R0, 3.))
>> 351 *C* ( 1+d1/SqrtS+d2/(std::pow(SqrtS,2.))+d3/(std::pow(SqrtS,3.)) ));
340 352
341 void G4ComponentAntiNuclNuclearXS::CrossSectio << 353 // xsection *= millibarn;
342 { <<
343 outFile << "The G4ComponentAntiNuclNuclearXS <<
344 << "inelastic, elastic cross section <<
345 << "anti-nucleus interactions with n <<
346 << "It uses parametrizations of anti <<
347 << "cross sections and Wood-Saxon di <<
348 << "See details in Phys.Lett. B705 ( <<
349 } <<
350 354
>> 355 fAntiHadronNucleonElXsc = xsection;
>> 356 return fAntiHadronNucleonElXsc;
>> 357 }
351 358