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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" 39 #include "G4PhysicalConstants.hh"
40 #include "G4SystemOfUnits.hh" 40 #include "G4SystemOfUnits.hh"
41 #include "G4ParticleTable.hh" 41 #include "G4ParticleTable.hh"
42 #include "G4IonTable.hh" 42 #include "G4IonTable.hh"
43 #include "G4ParticleDefinition.hh" 43 #include "G4ParticleDefinition.hh"
44 #include "G4HadronicException.hh" << 44 #include "G4Pow.hh"
45 45
46 46
47 ////////////////////////////////////////////// 47 /////////////////////////////////////////////////////////////////////////////
48 48
49 G4ComponentAntiNuclNuclearXS::G4ComponentAntiN 49 G4ComponentAntiNuclNuclearXS::G4ComponentAntiNuclNuclearXS()
50 : G4VComponentCrossSection("AntiAGlauber"), 50 : G4VComponentCrossSection("AntiAGlauber"),
51 fRadiusEff(0.0), << 51 fRadiusEff(0.0), fRadiusNN2(0.0),
52 fTotalXsc(0.0), fElasticXsc(0.0), fInelastic 52 fTotalXsc(0.0), fElasticXsc(0.0), fInelasticXsc(0.0),
53 fAntiHadronNucleonTotXsc(0.0), fAntiHadronNu 53 fAntiHadronNucleonTotXsc(0.0), fAntiHadronNucleonElXsc(0.0),
54 Elab(0.0), S(0.0), SqrtS(0) 54 Elab(0.0), S(0.0), SqrtS(0)
55 { 55 {
56 theAProton = G4AntiProton::AntiProton(); 56 theAProton = G4AntiProton::AntiProton();
57 theANeutron = G4AntiNeutron::AntiNeutron(); 57 theANeutron = G4AntiNeutron::AntiNeutron();
58 theADeuteron = G4AntiDeuteron::AntiDeuteron( 58 theADeuteron = G4AntiDeuteron::AntiDeuteron();
59 theATriton = G4AntiTriton::AntiTriton(); 59 theATriton = G4AntiTriton::AntiTriton();
60 theAAlpha = G4AntiAlpha::AntiAlpha(); 60 theAAlpha = G4AntiAlpha::AntiAlpha();
61 theAHe3 = G4AntiHe3::AntiHe3(); 61 theAHe3 = G4AntiHe3::AntiHe3();
62 Mn = 0.93827231; // GeV 62 Mn = 0.93827231; // GeV
63 b0 = 11.92; // GeV^(-2) 63 b0 = 11.92; // GeV^(-2)
64 b2 = 0.3036; // GeV^(-2) 64 b2 = 0.3036; // GeV^(-2)
65 SqrtS0 = 20.74; // GeV 65 SqrtS0 = 20.74; // GeV
66 S0 = 33.0625; // GeV^2 66 S0 = 33.0625; // GeV^2
67 R0 = 1.0; // default va 67 R0 = 1.0; // default value (V.Ivanchenko)
68 } 68 }
69 69
70 70
71 ////////////////////////////////////////////// 71 /////////////////////////////////////////////////////////////////////////////
72 72
73 G4ComponentAntiNuclNuclearXS::~G4ComponentAnti 73 G4ComponentAntiNuclNuclearXS::~G4ComponentAntiNuclNuclearXS()
74 { 74 {
75 } 75 }
76 76
77 77
78 ////////////////////////////////////////////// 78 /////////////////////////////////////////////////////////////////////////////
79 // 79 //
80 // Calculation of total CrossSection of Anti-N 80 // Calculation of total CrossSection of Anti-Nucleus - Nucleus
81 81
82 G4double G4ComponentAntiNuclNuclearXS::GetTota 82 G4double G4ComponentAntiNuclNuclearXS::GetTotalElementCrossSection
83 (const G4ParticleDefinition* aParticle, G4doub 83 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4double A)
84 { 84 {
85 if ( aParticle == nullptr ) { << 85 G4double xsection, sigmaTotal, sigmaElastic;
86 G4ExceptionDescription ed; <<
87 ed << "anti-nucleus with nullptr particle <<
88 G4Exception( "G4ComponentAntiNuclNuclearXS <<
89 "antiNuclNuclearXS001", JustW <<
90 return 0.0; <<
91 } <<
92 <<
93 const G4ParticleDefinition* theParticle = aP 86 const G4ParticleDefinition* theParticle = aParticle;
94 G4double sigmaTotal = GetAntiHadronNucleonTo << 87 sigmaTotal = GetAntiHadronNucleonTotCrSc(theParticle,kinEnergy);
>> 88 sigmaElastic = GetAntiHadronNucleonElCrSc(theParticle,kinEnergy);
95 89
96 // calculation of squared radius of NN-coll 90 // calculation of squared radius of NN-collision
97 G4int i(-1), j(-1); << 91 fRadiusNN2=sigmaTotal*sigmaTotal*0.1/(8.*sigmaElastic*pi) ; //fm^2
98 if ( theParticle == theAProton || << 92
99 theParticle == theANeutron ) { i=0; } << 93 // calculation of effective nuclear radius for Pbar and Nbar interactions (can be changed)
100 else if ( theParticle == theADeuteron ) { i= << 94 //A.R. 29-Jan-2013 : use antiprotons/antineutrons as the default case,
101 else if ( theParticle == theATriton ) { i= << 95 // to be used for instance, as first approximation
102 else if ( theParticle == theAHe3 ) { i= << 96 // without validation, for anti-hyperons.
103 else if ( theParticle == theAAlpha ) { i= << 97 if (A==1) {
104 else {}; << 98 fTotalXsc = sigmaTotal * millibarn;
105 << 99 return fTotalXsc;
106 if ( i < 0 && ( ! theParticle->IsAntiHypern << 100 }
107 G4ExceptionDescription ed; << 101 fRadiusEff = 1.34*G4Pow::GetInstance()->powA(A,0.23)+1.35/G4Pow::GetInstance()->powA(A,1./3.); //fm
108 ed << "Unknown anti-nucleus : " << thePart << 102 if ( (Z==1) && (A==2) ) fRadiusEff = 3.800; //fm
109 << "Target (Z, A)=(" << Z << "," << A < << 103 if ( (Z==1) && (A==3) ) fRadiusEff = 3.300;
110 G4Exception( "G4ComponentAntiNuclNuclearXS << 104 if ( (Z==2) && (A==3) ) fRadiusEff = 3.300;
111 "antiNuclNuclearXS002", JustW << 105 if ( (Z==2) && (A==4) ) fRadiusEff = 2.376;
>> 106
>> 107 // calculation of effective nuclear radius for AntiDeuteron interaction (can be changed)
>> 108 if (theParticle == theADeuteron) {
>> 109 fRadiusEff = 1.46 * G4Pow::GetInstance()->powA(A,0.21) + 1.45 / G4Pow::GetInstance()->powA(A,1./3.);
>> 110 if ( (Z==1) && (A==2) ) fRadiusEff = 3.238; //fm
>> 111 if ( (Z==1) && (A==3) ) fRadiusEff = 3.144;
>> 112 if ( (Z==2) && (A==3) ) fRadiusEff = 3.144;
>> 113 if ( (Z==2) && (A==4) ) fRadiusEff = 2.544;
112 } 114 }
113 115
114 G4int intA = static_cast<G4int>( A ); << 116 // calculation of effective nuclear radius for AntiHe3 interaction (can be changed)
>> 117 if ( (theParticle ==theAHe3) || (theParticle ==theATriton) ) {
>> 118 fRadiusEff = 1.40* G4Pow::GetInstance()->powA(A,0.21)+1.63/G4Pow::GetInstance()->powA(A,1./3.);
>> 119 if ( (Z==1) && (A==2) ) fRadiusEff = 3.144; //fm
>> 120 if ( (Z==1) && (A==3) ) fRadiusEff = 3.075;
>> 121 if ( (Z==2) && (A==3) ) fRadiusEff = 3.075;
>> 122 if ( (Z==2) && (A==4) ) fRadiusEff = 2.589;
>> 123 }
115 124
116 if ( Z == 1 && intA == 1 ) { j=0; } << 125 // calculation of effective nuclear radius for AntiAlpha interaction (can be changed)
117 else if ( Z == 1 && intA == 2 ) { j=1; } << 126 if (theParticle == theAAlpha) {
118 else if ( Z == 1 && intA == 3 ) { j=2; } << 127 fRadiusEff = 1.35* G4Pow::GetInstance()->powA(A,0.21)+1.1/G4Pow::GetInstance()->powA(A,1./3.);
119 else if ( Z == 2 && intA == 3 ) { j=3; } << 128 if ( (Z==1) && (A==2) ) fRadiusEff = 2.544; //fm
120 else if ( Z == 2 && intA == 4 ) { j=4; } << 129 if ( (Z==1) && (A==3) ) fRadiusEff = 2.589;
121 else {} << 130 if ( (Z==2) && (A==3) ) fRadiusEff = 2.589;
122 << 131 if ( (Z==2) && (A==4) ) fRadiusEff = 2.241;
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 } 132 }
142 133
143 G4double R2 = fRadiusEff*fRadiusEff; 134 G4double R2 = fRadiusEff*fRadiusEff;
>> 135 G4double REf2 = R2+fRadiusNN2;
144 G4double ApAt = std::abs(theParticle->GetBar 136 G4double ApAt = std::abs(theParticle->GetBaryonNumber()) * A;
145 137
146 G4double xsection = millibarn*2.*pi*R2*10.*G << 138 xsection = 2*pi*REf2*10.*G4Log(1+(ApAt*sigmaTotal/(2*pi*REf2*10.))); //mb
>> 139 xsection = xsection *millibarn;
147 fTotalXsc = xsection; 140 fTotalXsc = xsection;
148 141
149 return fTotalXsc; 142 return fTotalXsc;
150 } 143 }
151 144
152 145
153 ////////////////////////////////////////////// 146 /////////////////////////////////////////////////////////////////////////////
154 // 147 //
155 // Calculation of total CrossSection of Anti-N 148 // Calculation of total CrossSection of Anti-Nucleus - Nucleus
156 149
157 G4double G4ComponentAntiNuclNuclearXS::GetTota 150 G4double G4ComponentAntiNuclNuclearXS::GetTotalIsotopeCrossSection
158 (const G4ParticleDefinition* aParticle, G4doub 151 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4int A )
159 { 152 {
160 return GetTotalElementCrossSection(aParticle 153 return GetTotalElementCrossSection(aParticle, kinEnergy, Z, (G4double) A);
161 } 154 }
162 155
163 156
164 ////////////////////////////////////////////// 157 /////////////////////////////////////////////////////////////////////////////
165 // Calculation of inelastic CrossSection of An 158 // Calculation of inelastic CrossSection of Anti-Nucleus - Nucleus
166 159
167 G4double G4ComponentAntiNuclNuclearXS::GetInel 160 G4double G4ComponentAntiNuclNuclearXS::GetInelasticElementCrossSection
168 (const G4ParticleDefinition* aParticle, G4doub 161 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4double A)
169 { 162 {
170 if ( aParticle == nullptr ) { << 163 G4double inelxsection, sigmaTotal, sigmaElastic;
171 G4ExceptionDescription ed; <<
172 ed << "anti-nucleus with nullptr particle <<
173 G4Exception( "G4ComponentAntiNuclNuclearXS <<
174 "antiNuclNuclearXS003", JustW <<
175 return 0.0; <<
176 } <<
177 <<
178 const G4ParticleDefinition* theParticle = aP 164 const G4ParticleDefinition* theParticle = aParticle;
179 G4double sigmaTotal = GetAntiHadronNucleon << 165 sigmaTotal = GetAntiHadronNucleonTotCrSc(theParticle,kinEnergy);
180 G4double sigmaElastic = GetAntiHadronNucleon << 166 sigmaElastic = GetAntiHadronNucleonElCrSc(theParticle,kinEnergy);
181 167
182 // calculation of sqr of radius NN-collision 168 // calculation of sqr of radius NN-collision
183 G4int i(-1), j(-1); << 169 fRadiusNN2=sigmaTotal*sigmaTotal*0.1/(8.*sigmaElastic*pi); // fm^2
184 if ( theParticle == theAProton || << 170
185 theParticle == theANeutron ) { i=0; } << 171 // calculation of effective nuclear radius for Pbar and Nbar interaction (can be changed)
186 else if ( theParticle == theADeuteron ) { i= << 172 //A.R. 29-Jan-2013 : use antiprotons/antineutrons as the default case,
187 else if ( theParticle == theATriton ) { i= << 173 // to be used for instance, as first approximation
188 else if ( theParticle == theAHe3 ) { i= << 174 // without validation, for anti-hyperons.
189 else if ( theParticle == theAAlpha ) { i= << 175 if (A==1) {
190 else {}; << 176 fInelasticXsc = (sigmaTotal - sigmaElastic) * millibarn;
191 << 177 return fInelasticXsc;
192 if ( i < 0 && ( ! theParticle->IsAntiHypern << 178 }
193 G4ExceptionDescription ed; << 179 fRadiusEff = 1.31*G4Pow::GetInstance()->powA(A, 0.22)+0.9/G4Pow::GetInstance()->powA(A, 1./3.); //fm
194 ed << "Unknown anti-nucleus : " << thePart << 180 if ( (Z==1) && (A==2) ) fRadiusEff = 3.582; //fm
195 << "Target (Z, A)=(" << Z << "," << A < << 181 if ( (Z==1) && (A==3) ) fRadiusEff = 3.105;
196 G4Exception( "G4ComponentAntiNuclNuclearXS << 182 if ( (Z==2) && (A==3) ) fRadiusEff = 3.105;
197 "antiNuclNuclearXS004", JustW << 183 if ( (Z==2) && (A==4) ) fRadiusEff = 2.209;
>> 184
>> 185 // calculation of effective nuclear radius for AntiDeuteron interaction (can be changed)
>> 186 if (theParticle ==theADeuteron) {
>> 187 fRadiusEff = 1.38*G4Pow::GetInstance()->powA(A, 0.21)+1.55/G4Pow::GetInstance()->powA(A, 1./3.);
>> 188 if ( (Z==1) && (A==2) ) fRadiusEff = 3.169; //fm
>> 189 if ( (Z==1) && (A==3) ) fRadiusEff = 3.066;
>> 190 if ( (Z==2) && (A==3) ) fRadiusEff = 3.066;
>> 191 if ( (Z==2) && (A==4) ) fRadiusEff = 2.498;
198 } 192 }
199 193
200 G4int intA = static_cast<G4int>( A ); << 194 // calculation of effective nuclear radius for AntiHe3 interaction (can be changed)
>> 195 if ( (theParticle ==theAHe3) || (theParticle ==theATriton) ) {
>> 196 fRadiusEff = 1.34 * G4Pow::GetInstance()->powA(A, 0.21)+1.51/G4Pow::GetInstance()->powA(A, 1./3.);
>> 197 if ( (Z==1) && (A==2) ) fRadiusEff = 3.066; //fm
>> 198 if ( (Z==1) && (A==3) ) fRadiusEff = 2.973;
>> 199 if ( (Z==2) && (A==3) ) fRadiusEff = 2.973;
>> 200 if ( (Z==2) && (A==4) ) fRadiusEff = 2.508;
>> 201 }
201 202
202 if ( Z == 1 && intA == 1 ) { j=0; } << 203 // calculation of effective nuclear radius for AntiAlpha interaction (can be changed)
203 else if ( Z == 1 && intA == 2 ) { j=1; } << 204 if (theParticle == theAAlpha) {
204 else if ( Z == 1 && intA == 3 ) { j=2; } << 205 fRadiusEff = 1.3*G4Pow::GetInstance()->powA(A, 0.21)+1.05/G4Pow::GetInstance()->powA(A, 1./3.);
205 else if ( Z == 2 && intA == 3 ) { j=3; } << 206 if ( (Z==1) && (A==2) ) fRadiusEff = 2.498; //fm
206 else if ( Z == 2 && intA == 4 ) { j=4; } << 207 if ( (Z==1) && (A==3) ) fRadiusEff = 2.508;
207 else {} << 208 if ( (Z==2) && (A==3) ) fRadiusEff = 2.508;
208 << 209 if ( (Z==2) && (A==4) ) fRadiusEff = 2.158;
209 if ( i < 0 && j >= 0 ) { fRadiusEff = Ref <<
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 } 210 }
228 211
229 G4double R2 = fRadiusEff*fRadiusEff; 212 G4double R2 = fRadiusEff*fRadiusEff;
>> 213 G4double REf2 = R2+fRadiusNN2;
230 G4double ApAt = std::abs(theParticle->GetBar 214 G4double ApAt = std::abs(theParticle->GetBaryonNumber()) * A;
231 215
232 G4double inelxsection = millibarn*pi*R2*10.* << 216 inelxsection = pi*REf2 *10* G4Log(1+(ApAt*sigmaTotal/(pi*REf2*10.))); //mb
>> 217 inelxsection = inelxsection * millibarn;
233 fInelasticXsc = inelxsection; 218 fInelasticXsc = inelxsection;
234 219
235 return fInelasticXsc; 220 return fInelasticXsc;
236 } 221 }
237 222
238 223
239 ////////////////////////////////////////////// 224 /////////////////////////////////////////////////////////////////////////////
240 // 225 //
241 // Calculates Inelastic Anti-nucleus-Nucleus c 226 // Calculates Inelastic Anti-nucleus-Nucleus cross-section
242 227
243 G4double G4ComponentAntiNuclNuclearXS::GetInel 228 G4double G4ComponentAntiNuclNuclearXS::GetInelasticIsotopeCrossSection
244 (const G4ParticleDefinition* aParticle, G4doub 229 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4int A)
245 { 230 {
246 return GetInelasticElementCrossSection(aPart 231 return GetInelasticElementCrossSection(aParticle, kinEnergy, Z, (G4double) A);
247 } 232 }
248 233
249 234
250 ////////////////////////////////////////////// 235 /////////////////////////////////////////////////////////////////////////////
251 // 236 //
252 // Calculates elastic Anti-nucleus-Nucleus cro 237 // Calculates elastic Anti-nucleus-Nucleus cross-section as Total - Inelastic
253 238
254 G4double G4ComponentAntiNuclNuclearXS::GetElas 239 G4double G4ComponentAntiNuclNuclearXS::GetElasticElementCrossSection
255 (const G4ParticleDefinition* aParticle, G4doub 240 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4double A)
256 { 241 {
257 fElasticXsc = GetTotalElementCrossSection(aP 242 fElasticXsc = GetTotalElementCrossSection(aParticle, kinEnergy, Z, A)-
258 GetInelasticElementCrossSectio 243 GetInelasticElementCrossSection(aParticle, kinEnergy, Z, A);
259 if (fElasticXsc < 0.) fElasticXsc = 0.; 244 if (fElasticXsc < 0.) fElasticXsc = 0.;
260 return fElasticXsc; 245 return fElasticXsc;
261 } 246 }
262 247
263 248
264 ////////////////////////////////////////////// 249 /////////////////////////////////////////////////////////////////////////////
265 // 250 //
266 // Calculates elastic Anti-nucleus-Nucleus cro 251 // Calculates elastic Anti-nucleus-Nucleus cross-section
267 252
268 G4double G4ComponentAntiNuclNuclearXS::GetElas 253 G4double G4ComponentAntiNuclNuclearXS::GetElasticIsotopeCrossSection
269 (const G4ParticleDefinition* aParticle, G4doub 254 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4int A)
270 { 255 {
271 return GetElasticElementCrossSection(aPartic 256 return GetElasticElementCrossSection(aParticle, kinEnergy, Z, (G4double) A);
272 } 257 }
273 258
274 259
275 ////////////////////////////////////////////// 260 /////////////////////////////////////////////////////////////////////////////
276 // Calculation of Antihadron - hadron Total C 261 // Calculation of Antihadron - hadron Total Cross-section
277 262
278 G4double G4ComponentAntiNuclNuclearXS::GetAnti 263 G4double G4ComponentAntiNuclNuclearXS::GetAntiHadronNucleonTotCrSc
279 (const G4ParticleDefinition* aParticle, G4doub 264 (const G4ParticleDefinition* aParticle, G4double kinEnergy)
280 { 265 {
281 G4double xsection, Pmass, Energy, momentum; 266 G4double xsection, Pmass, Energy, momentum;
282 const G4ParticleDefinition* theParticle = aP 267 const G4ParticleDefinition* theParticle = aParticle;
283 Pmass=theParticle->GetPDGMass(); 268 Pmass=theParticle->GetPDGMass();
284 Energy=Pmass+kinEnergy; 269 Energy=Pmass+kinEnergy;
285 momentum=std::sqrt(Energy*Energy-Pmass*Pmass 270 momentum=std::sqrt(Energy*Energy-Pmass*Pmass)/std::abs(theParticle->GetBaryonNumber());
286 G4double Plab = momentum / GeV; 271 G4double Plab = momentum / GeV;
287 272
288 G4double B, SigAss; 273 G4double B, SigAss;
289 G4double C, d1, d2, d3; 274 G4double C, d1, d2, d3;
290 Elab = std::sqrt(Mn*Mn + Plab*Plab); / 275 Elab = std::sqrt(Mn*Mn + Plab*Plab); // GeV
291 S = 2.*Mn*Mn + 2. *Mn*Elab; / 276 S = 2.*Mn*Mn + 2. *Mn*Elab; // GeV^2
292 SqrtS = std::sqrt(S); / 277 SqrtS = std::sqrt(S); // GeV
293 B = b0+b2*G4Log(SqrtS/SqrtS0)*G4Log(S 278 B = b0+b2*G4Log(SqrtS/SqrtS0)*G4Log(SqrtS/SqrtS0); //GeV^(-2)
294 SigAss = 36.04 +0.304*G4Log(S/S0)*G4Log(S/ 279 SigAss = 36.04 +0.304*G4Log(S/S0)*G4Log(S/S0); //mb
295 R0 = std::sqrt(0.40874044*SigAss - B); 280 R0 = std::sqrt(0.40874044*SigAss - B); //GeV^(-2)
296 C = 13.55; 281 C = 13.55;
297 d1 = -4.47; 282 d1 = -4.47;
298 d2 = 12.38; 283 d2 = 12.38;
299 d3 = -12.43; 284 d3 = -12.43;
300 285
301 xsection = SigAss * ( 1 + 1./(std::sqrt(S-4. << 286 xsection = SigAss * ( 1 + 1./(std::sqrt(S-4.*Mn*Mn)) / (G4Pow::GetInstance()->powA(R0, 3.))
302 * C * ( 1 + d1/SqrtS + << 287 * C * ( 1 + d1/SqrtS + d2/(G4Pow::GetInstance()->powA(SqrtS,2.))
303 + d3/(theG4Pow << 288 + d3/(G4Pow::GetInstance()->powA(SqrtS,3.)) ) );
304 289
305 //xsection *= millibarn; 290 //xsection *= millibarn;
306 fAntiHadronNucleonTotXsc = xsection; 291 fAntiHadronNucleonTotXsc = xsection;
307 292
308 return fAntiHadronNucleonTotXsc; 293 return fAntiHadronNucleonTotXsc;
309 } 294 }
310 295
311 296
312 // /////////////////////////////////////////// 297 // //////////////////////////////////////////////////////////////////////////
313 // Calculation of Antihadron - hadron Elastic 298 // Calculation of Antihadron - hadron Elastic Cross-section
314 299
315 G4double G4ComponentAntiNuclNuclearXS :: 300 G4double G4ComponentAntiNuclNuclearXS ::
316 GetAntiHadronNucleonElCrSc(const G4ParticleDef 301 GetAntiHadronNucleonElCrSc(const G4ParticleDefinition* aParticle, G4double kinEnergy)
317 { 302 {
318 G4double xsection; 303 G4double xsection;
319 G4double SigAss; 304 G4double SigAss;
320 G4double C, d1, d2, d3; 305 G4double C, d1, d2, d3;
321 GetAntiHadronNucleonTotCrSc(aParticle,kinEne 306 GetAntiHadronNucleonTotCrSc(aParticle,kinEnergy);
322 SigAss = 4.5 + 0.101*G4Log(S/S0)*G4Log(S/S 307 SigAss = 4.5 + 0.101*G4Log(S/S0)*G4Log(S/S0); //mb
323 C = 59.27; 308 C = 59.27;
324 d1 = -6.95; 309 d1 = -6.95;
325 d2 = 23.54; 310 d2 = 23.54;
326 d3 = -25.34; 311 d3 = -25.34;
327 312
328 xsection = SigAss * ( 1 + 1. / (std::sqrt(S- << 313 xsection = SigAss * ( 1 + 1. / (std::sqrt(S-4.*Mn*Mn)) / (G4Pow::GetInstance()->powA(R0, 3.))
329 * C * ( 1 + d1/SqrtS + << 314 * C * ( 1 + d1/SqrtS + d2/(G4Pow::GetInstance()->powA(SqrtS,2.))
330 + d3/(theG4Pow << 315 + d3/(G4Pow::GetInstance()->powA(SqrtS,3.)) ) );
331 316
332 //xsection *= millibarn; 317 //xsection *= millibarn;
333 fAntiHadronNucleonElXsc = xsection; 318 fAntiHadronNucleonElXsc = xsection;
334 319
335 return fAntiHadronNucleonElXsc; 320 return fAntiHadronNucleonElXsc;
336 } 321 }
337 322
338 323
339 ////////////////////////////////////////////// 324 /////////////////////////////////////////////////////////////////////////////
340 325
341 void G4ComponentAntiNuclNuclearXS::CrossSectio 326 void G4ComponentAntiNuclNuclearXS::CrossSectionDescription(std::ostream& outFile) const
342 { 327 {
343 outFile << "The G4ComponentAntiNuclNuclearXS 328 outFile << "The G4ComponentAntiNuclNuclearXS calculates total,\n"
344 << "inelastic, elastic cross section 329 << "inelastic, elastic cross sections of anti-nucleons and light \n"
345 << "anti-nucleus interactions with n 330 << "anti-nucleus interactions with nuclei using Glauber's approach.\n"
346 << "It uses parametrizations of anti 331 << "It uses parametrizations of antiproton-proton total and elastic \n"
347 << "cross sections and Wood-Saxon di 332 << "cross sections and Wood-Saxon distribution of nuclear density.\n"
348 << "See details in Phys.Lett. B705 ( 333 << "See details in Phys.Lett. B705 (2011) 235. \n";
349 } 334 }
350 335
351 336