#include <G4HEAntiXiZeroInelastic.hh>
Inheritance diagram for G4HEAntiXiZeroInelastic:
Public Member Functions | |
| G4HEAntiXiZeroInelastic () | |
| ~G4HEAntiXiZeroInelastic () | |
| virtual void | ModelDescription (std::ostream &) const |
| G4HadFinalState * | ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus) |
| G4int | GetNumberOfSecondaries () |
| void | FirstIntInCasAntiXiZero (G4bool &inElastic, const G4double availableEnergy, G4HEVector pv[], G4int &vecLen, const G4HEVector &incidentParticle, const G4HEVector &targetParticle, const G4double atomicWeight) |
Data Fields | |
| G4int | vecLength |
Definition at line 51 of file G4HEAntiXiZeroInelastic.hh.
| G4HEAntiXiZeroInelastic::G4HEAntiXiZeroInelastic | ( | ) | [inline] |
Definition at line 54 of file G4HEAntiXiZeroInelastic.hh.
References G4cout, G4endl, G4HEInelastic::MAXPART, G4HadronicInteraction::theMaxEnergy, G4HadronicInteraction::theMinEnergy, vecLength, and G4HEInelastic::verboseLevel.
00054 : G4HEInelastic("G4HEAntiXiZeroInelastic") 00055 { 00056 vecLength = 0; 00057 theMinEnergy = 20*CLHEP::GeV; 00058 theMaxEnergy = 10*CLHEP::TeV; 00059 MAXPART = 2048; 00060 verboseLevel = 0; 00061 G4cout << "WARNING: model G4HEAntiXiZeroInelastic is being deprecated and will\n" 00062 << "disappear in Geant4 version 10.0" << G4endl; 00063 }
| G4HEAntiXiZeroInelastic::~G4HEAntiXiZeroInelastic | ( | ) | [inline] |
| G4HadFinalState * G4HEAntiXiZeroInelastic::ApplyYourself | ( | const G4HadProjectile & | aTrack, | |
| G4Nucleus & | targetNucleus | |||
| ) | [virtual] |
Implements G4HadronicInteraction.
Definition at line 57 of file G4HEAntiXiZeroInelastic.cc.
References G4HEInelastic::ElasticScattering(), G4HEInelastic::FillParticleChange(), FirstIntInCasAntiXiZero(), G4cout, G4endl, G4UniformRand, G4Nucleus::GetA_asInt(), G4HEVector::getCode(), G4HEVector::getEnergy(), G4HEVector::getMass(), G4HEVector::getName(), G4Nucleus::GetZ_asInt(), G4HEInelastic::HighEnergyCascading(), G4HEInelastic::HighEnergyClusterProduction(), G4HEInelastic::MAXPART, G4HEInelastic::MediumEnergyCascading(), G4HEInelastic::MediumEnergyClusterProduction(), G4HEInelastic::NuclearExcitation(), G4HEInelastic::NuclearInelasticity(), G4HEInelastic::QuasiElasticScattering(), G4HEVector::setDefinition(), G4HadFinalState::SetStatusChange(), stopAndKill, G4HEInelastic::StrangeParticlePairProduction(), G4HadronicInteraction::theParticleChange, vecLength, and G4HEInelastic::verboseLevel.
00059 { 00060 G4HEVector* pv = new G4HEVector[MAXPART]; 00061 const G4HadProjectile* aParticle = &aTrack; 00062 const G4double A = targetNucleus.GetA_asInt(); 00063 const G4double Z = targetNucleus.GetZ_asInt(); 00064 G4HEVector incidentParticle(aParticle); 00065 00066 G4double atomicNumber = Z; 00067 G4double atomicWeight = A; 00068 00069 G4int incidentCode = incidentParticle.getCode(); 00070 G4double incidentMass = incidentParticle.getMass(); 00071 G4double incidentTotalEnergy = incidentParticle.getEnergy(); 00072 00073 // G4double incidentTotalMomentum = incidentParticle.getTotalMomentum(); 00074 // DHW 19 May 2011: variable set but not used 00075 00076 G4double incidentKineticEnergy = incidentTotalEnergy - incidentMass; 00077 00078 if (incidentKineticEnergy < 1.) 00079 G4cout << "GHEAntiXiZeroInelastic: incident energy < 1 GeV" << G4endl; 00080 00081 if (verboseLevel > 1) { 00082 G4cout << "G4HEAntiXiZeroInelastic::ApplyYourself" << G4endl; 00083 G4cout << "incident particle " << incidentParticle.getName() 00084 << "mass " << incidentMass 00085 << "kinetic energy " << incidentKineticEnergy 00086 << G4endl; 00087 G4cout << "target material with (A,Z) = (" 00088 << atomicWeight << "," << atomicNumber << ")" << G4endl; 00089 } 00090 00091 G4double inelasticity = NuclearInelasticity(incidentKineticEnergy, 00092 atomicWeight, atomicNumber); 00093 if (verboseLevel > 1) 00094 G4cout << "nuclear inelasticity = " << inelasticity << G4endl; 00095 00096 incidentKineticEnergy -= inelasticity; 00097 00098 G4double excitationEnergyGNP = 0.; 00099 G4double excitationEnergyDTA = 0.; 00100 00101 G4double excitation = NuclearExcitation(incidentKineticEnergy, 00102 atomicWeight, atomicNumber, 00103 excitationEnergyGNP, 00104 excitationEnergyDTA); 00105 if (verboseLevel > 1) 00106 G4cout << "nuclear excitation = " << excitation << excitationEnergyGNP 00107 << excitationEnergyDTA << G4endl; 00108 00109 incidentKineticEnergy -= excitation; 00110 incidentTotalEnergy = incidentKineticEnergy + incidentMass; 00111 // incidentTotalMomentum = std::sqrt((incidentTotalEnergy-incidentMass) 00112 // *(incidentTotalEnergy+incidentMass)); 00113 // DHW 19 May 2011: variable set but not used 00114 00115 G4HEVector targetParticle; 00116 if (G4UniformRand() < atomicNumber/atomicWeight) { 00117 targetParticle.setDefinition("Proton"); 00118 } else { 00119 targetParticle.setDefinition("Neutron"); 00120 } 00121 00122 G4double targetMass = targetParticle.getMass(); 00123 G4double centerOfMassEnergy = std::sqrt(incidentMass*incidentMass 00124 + targetMass*targetMass 00125 + 2.0*targetMass*incidentTotalEnergy); 00126 G4double availableEnergy = centerOfMassEnergy - targetMass - incidentMass; 00127 00128 G4bool inElastic = true; 00129 vecLength = 0; 00130 00131 if (verboseLevel > 1) 00132 G4cout << "ApplyYourself: CallFirstIntInCascade for particle " 00133 << incidentCode << G4endl; 00134 00135 G4bool successful = false; 00136 00137 FirstIntInCasAntiXiZero(inElastic, availableEnergy, pv, vecLength, 00138 incidentParticle, targetParticle, atomicWeight); 00139 00140 if (verboseLevel > 1) 00141 G4cout << "ApplyYourself::StrangeParticlePairProduction" << G4endl; 00142 00143 if ((vecLength > 0) && (availableEnergy > 1.)) 00144 StrangeParticlePairProduction(availableEnergy, centerOfMassEnergy, 00145 pv, vecLength, 00146 incidentParticle, targetParticle); 00147 00148 HighEnergyCascading(successful, pv, vecLength, 00149 excitationEnergyGNP, excitationEnergyDTA, 00150 incidentParticle, targetParticle, 00151 atomicWeight, atomicNumber); 00152 if (!successful) 00153 HighEnergyClusterProduction(successful, pv, vecLength, 00154 excitationEnergyGNP, excitationEnergyDTA, 00155 incidentParticle, targetParticle, 00156 atomicWeight, atomicNumber); 00157 if (!successful) 00158 MediumEnergyCascading(successful, pv, vecLength, 00159 excitationEnergyGNP, excitationEnergyDTA, 00160 incidentParticle, targetParticle, 00161 atomicWeight, atomicNumber); 00162 00163 if (!successful) 00164 MediumEnergyClusterProduction(successful, pv, vecLength, 00165 excitationEnergyGNP, excitationEnergyDTA, 00166 incidentParticle, targetParticle, 00167 atomicWeight, atomicNumber); 00168 if (!successful) 00169 QuasiElasticScattering(successful, pv, vecLength, 00170 excitationEnergyGNP, excitationEnergyDTA, 00171 incidentParticle, targetParticle, 00172 atomicWeight, atomicNumber); 00173 if (!successful) 00174 ElasticScattering(successful, pv, vecLength, 00175 incidentParticle, 00176 atomicWeight, atomicNumber); 00177 if (!successful) 00178 G4cout << "GHEInelasticInteraction::ApplyYourself fails to produce final state particles" 00179 << G4endl; 00180 00181 FillParticleChange(pv, vecLength); 00182 delete [] pv; 00183 theParticleChange.SetStatusChange(stopAndKill); 00184 return &theParticleChange; 00185 }
| void G4HEAntiXiZeroInelastic::FirstIntInCasAntiXiZero | ( | G4bool & | inElastic, | |
| const G4double | availableEnergy, | |||
| G4HEVector | pv[], | |||
| G4int & | vecLen, | |||
| const G4HEVector & | incidentParticle, | |||
| const G4HEVector & | targetParticle, | |||
| const G4double | atomicWeight | |||
| ) |
Definition at line 189 of file G4HEAntiXiZeroInelastic.cc.
References G4HEInelastic::AntiLambda, G4HEInelastic::AntiSigmaMinus, G4HEInelastic::AntiSigmaPlus, G4HEInelastic::AntiSigmaZero, G4cout, G4endl, G4UniformRand, G4HEVector::getCode(), G4HEVector::getMass(), G4HEVector::getTotalMomentum(), CLHEP::detail::n, G4HEInelastic::Neutron, G4INCL::Math::pi, G4HEInelastic::PionMinus, G4HEInelastic::PionPlus, G4HEInelastic::PionZero, G4HEInelastic::pmltpc(), G4HEInelastic::Proton, and G4HEInelastic::verboseLevel.
Referenced by ApplyYourself().
00201 { 00202 static const G4double expxu = 82.; // upper bound for arg. of exp 00203 static const G4double expxl = -expxu; // lower bound for arg. of exp 00204 00205 static const G4double protb = 0.7; 00206 static const G4double neutb = 0.7; 00207 static const G4double c = 1.25; 00208 00209 static const G4int numMul = 1200; 00210 static const G4int numMulAn = 400; 00211 static const G4int numSec = 60; 00212 00213 G4int protonCode = Proton.getCode(); 00214 00215 G4int targetCode = targetParticle.getCode(); 00216 G4double incidentTotalMomentum = incidentParticle.getTotalMomentum(); 00217 00218 static G4bool first = true; 00219 static G4double protmul[numMul], protnorm[numSec]; // proton constants 00220 static G4double protmulAn[numMulAn],protnormAn[numSec]; 00221 static G4double neutmul[numMul], neutnorm[numSec]; // neutron constants 00222 static G4double neutmulAn[numMulAn],neutnormAn[numSec]; 00223 00224 // misc. local variables 00225 // npos = number of pi+, nneg = number of pi-, nzero = number of pi0 00226 00227 G4int i, counter, nt, npos, nneg, nzero; 00228 00229 if( first ) 00230 { // compute normalization constants, this will only be done once 00231 first = false; 00232 for( i=0; i<numMul ; i++ ) protmul[i] = 0.0; 00233 for( i=0; i<numSec ; i++ ) protnorm[i] = 0.0; 00234 counter = -1; 00235 for( npos=0; npos<(numSec/3); npos++ ) 00236 { 00237 for( nneg=std::max(0,npos-2); nneg<=(npos+1); nneg++ ) 00238 { 00239 for( nzero=0; nzero<numSec/3; nzero++ ) 00240 { 00241 if( ++counter < numMul ) 00242 { 00243 nt = npos+nneg+nzero; 00244 if( (nt>0) && (nt<=numSec) ) 00245 { 00246 protmul[counter] = pmltpc(npos,nneg,nzero,nt,protb,c); 00247 protnorm[nt-1] += protmul[counter]; 00248 } 00249 } 00250 } 00251 } 00252 } 00253 for( i=0; i<numMul; i++ )neutmul[i] = 0.0; 00254 for( i=0; i<numSec; i++ )neutnorm[i] = 0.0; 00255 counter = -1; 00256 for( npos=0; npos<numSec/3; npos++ ) 00257 { 00258 for( nneg=std::max(0,npos-1); nneg<=(npos+2); nneg++ ) 00259 { 00260 for( nzero=0; nzero<numSec/3; nzero++ ) 00261 { 00262 if( ++counter < numMul ) 00263 { 00264 nt = npos+nneg+nzero; 00265 if( (nt>0) && (nt<=numSec) ) 00266 { 00267 neutmul[counter] = pmltpc(npos,nneg,nzero,nt,neutb,c); 00268 neutnorm[nt-1] += neutmul[counter]; 00269 } 00270 } 00271 } 00272 } 00273 } 00274 for( i=0; i<numSec; i++ ) 00275 { 00276 if( protnorm[i] > 0.0 )protnorm[i] = 1.0/protnorm[i]; 00277 if( neutnorm[i] > 0.0 )neutnorm[i] = 1.0/neutnorm[i]; 00278 } 00279 // annihilation 00280 for( i=0; i<numMulAn ; i++ ) protmulAn[i] = 0.0; 00281 for( i=0; i<numSec ; i++ ) protnormAn[i] = 0.0; 00282 counter = -1; 00283 for( npos=1; npos<(numSec/3); npos++ ) 00284 { 00285 nneg = std::max(0,npos-1); 00286 for( nzero=0; nzero<numSec/3; nzero++ ) 00287 { 00288 if( ++counter < numMulAn ) 00289 { 00290 nt = npos+nneg+nzero; 00291 if( (nt>1) && (nt<=numSec) ) 00292 { 00293 protmulAn[counter] = pmltpc(npos,nneg,nzero,nt,protb,c); 00294 protnormAn[nt-1] += protmulAn[counter]; 00295 } 00296 } 00297 } 00298 } 00299 for( i=0; i<numMulAn; i++ ) neutmulAn[i] = 0.0; 00300 for( i=0; i<numSec; i++ ) neutnormAn[i] = 0.0; 00301 counter = -1; 00302 for( npos=0; npos<numSec/3; npos++ ) 00303 { 00304 nneg = npos; 00305 for( nzero=0; nzero<numSec/3; nzero++ ) 00306 { 00307 if( ++counter < numMulAn ) 00308 { 00309 nt = npos+nneg+nzero; 00310 if( (nt>1) && (nt<=numSec) ) 00311 { 00312 neutmulAn[counter] = pmltpc(npos,nneg,nzero,nt,neutb,c); 00313 neutnormAn[nt-1] += neutmulAn[counter]; 00314 } 00315 } 00316 } 00317 } 00318 for( i=0; i<numSec; i++ ) 00319 { 00320 if( protnormAn[i] > 0.0 )protnormAn[i] = 1.0/protnormAn[i]; 00321 if( neutnormAn[i] > 0.0 )neutnormAn[i] = 1.0/neutnormAn[i]; 00322 } 00323 } // end of initialization 00324 00325 00326 // initialize the first two places 00327 // the same as beam and target 00328 pv[0] = incidentParticle; 00329 pv[1] = targetParticle; 00330 vecLen = 2; 00331 00332 if( !inElastic ) 00333 { // some two-body reactions 00334 G4double cech[] = {0.50, 0.45, 0.40, 0.35, 0.30, 0.25, 0.06, 0.04, 0.005, 0.}; 00335 00336 G4int iplab = std::min(9, G4int( incidentTotalMomentum*2.5 )); 00337 if( G4UniformRand() < cech[iplab]/std::pow(atomicWeight,0.42) ) 00338 { 00339 G4double ran = G4UniformRand(); 00340 00341 if ( targetCode == protonCode) 00342 { 00343 if(ran < 0.2) 00344 { 00345 pv[0] = AntiSigmaZero; 00346 } 00347 else if (ran < 0.4) 00348 { 00349 pv[0] = AntiSigmaMinus; 00350 pv[1] = Neutron; 00351 } 00352 else if (ran < 0.6) 00353 { 00354 pv[0] = Proton; 00355 pv[1] = AntiLambda; 00356 } 00357 else if (ran < 0.8) 00358 { 00359 pv[0] = Proton; 00360 pv[1] = AntiSigmaZero; 00361 } 00362 else 00363 { 00364 pv[0] = Neutron; 00365 pv[1] = AntiSigmaMinus; 00366 } 00367 } 00368 else 00369 { 00370 if (ran < 0.2) 00371 { 00372 pv[0] = AntiSigmaZero; 00373 } 00374 else if (ran < 0.4) 00375 { 00376 pv[0] = AntiSigmaPlus; 00377 pv[1] = Proton; 00378 } 00379 else if (ran < 0.6) 00380 { 00381 pv[0] = Neutron; 00382 pv[1] = AntiLambda; 00383 } 00384 else if (ran < 0.8) 00385 { 00386 pv[0] = Neutron; 00387 pv[1] = AntiSigmaZero; 00388 } 00389 else 00390 { 00391 pv[0] = Proton; 00392 pv[1] = AntiSigmaPlus; 00393 } 00394 } 00395 } 00396 return; 00397 } 00398 else if (availableEnergy <= PionPlus.getMass()) 00399 return; 00400 00401 // inelastic scattering 00402 00403 npos = 0; nneg = 0; nzero = 0; 00404 G4double anhl[] = {1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 1.00, 0.97, 0.88, 00405 0.85, 0.81, 0.75, 0.64, 0.64, 0.55, 0.55, 0.45, 0.47, 0.40, 00406 0.39, 0.36, 0.33, 0.10, 0.01}; 00407 G4int iplab = G4int( incidentTotalMomentum*10.); 00408 if ( iplab > 9) iplab = 10 + G4int( (incidentTotalMomentum -1.)*5. ); 00409 if ( iplab > 14) iplab = 15 + G4int( incidentTotalMomentum -2. ); 00410 if ( iplab > 22) iplab = 23 + G4int( (incidentTotalMomentum -10.)/10.); 00411 iplab = std::min(24, iplab); 00412 00413 if ( G4UniformRand() > anhl[iplab] ) 00414 { // non- annihilation channels 00415 00416 // number of total particles vs. centre of mass Energy - 2*proton mass 00417 00418 G4double aleab = std::log(availableEnergy); 00419 G4double n = 3.62567+aleab*(0.665843+aleab*(0.336514 00420 + aleab*(0.117712+0.0136912*aleab))) - 2.0; 00421 00422 // normalization constant for kno-distribution. 00423 // calculate first the sum of all constants, check for numerical problems. 00424 G4double test, dum, anpn = 0.0; 00425 00426 for (nt=1; nt<=numSec; nt++) { 00427 test = std::exp( std::min( expxu, std::max( expxl, -(pi/4.0)*(nt*nt)/(n*n) ) ) ); 00428 dum = pi*nt/(2.0*n*n); 00429 if (std::fabs(dum) < 1.0) { 00430 if( test >= 1.0e-10 )anpn += dum*test; 00431 } else { 00432 anpn += dum*test; 00433 } 00434 } 00435 00436 G4double ran = G4UniformRand(); 00437 G4double excs = 0.0; 00438 if( targetCode == protonCode ) 00439 { 00440 counter = -1; 00441 for( npos=0; npos<numSec/3; npos++ ) 00442 { 00443 for( nneg=std::max(0,npos-2); nneg<=(npos+1); nneg++ ) 00444 { 00445 for( nzero=0; nzero<numSec/3; nzero++ ) 00446 { 00447 if( ++counter < numMul ) 00448 { 00449 nt = npos+nneg+nzero; 00450 if ( (nt>0) && (nt<=numSec) ) { 00451 test = std::exp( std::min( expxu, std::max( expxl, -(pi/4.0)*(nt*nt)/(n*n) ) ) ); 00452 dum = (pi/anpn)*nt*protmul[counter]*protnorm[nt-1]/(2.0*n*n); 00453 if (std::fabs(dum) < 1.0) { 00454 if( test >= 1.0e-10 )excs += dum*test; 00455 } else { 00456 excs += dum*test; 00457 } 00458 00459 if (ran < excs) goto outOfLoop; //-----------------------> 00460 } 00461 } 00462 } 00463 } 00464 } 00465 00466 // 3 previous loops continued to the end 00467 inElastic = false; // quasi-elastic scattering 00468 return; 00469 } 00470 else 00471 { // target must be a neutron 00472 counter = -1; 00473 for( npos=0; npos<numSec/3; npos++ ) 00474 { 00475 for( nneg=std::max(0,npos-1); nneg<=(npos+2); nneg++ ) 00476 { 00477 for( nzero=0; nzero<numSec/3; nzero++ ) 00478 { 00479 if( ++counter < numMul ) 00480 { 00481 nt = npos+nneg+nzero; 00482 if ( (nt>0) && (nt<=numSec) ) { 00483 test = std::exp( std::min( expxu, std::max( expxl, -(pi/4.0)*(nt*nt)/(n*n) ) ) ); 00484 dum = (pi/anpn)*nt*neutmul[counter]*neutnorm[nt-1]/(2.0*n*n); 00485 if (std::fabs(dum) < 1.0) { 00486 if( test >= 1.0e-10 )excs += dum*test; 00487 } else { 00488 excs += dum*test; 00489 } 00490 00491 if (ran < excs) goto outOfLoop; // --------------------------> 00492 } 00493 } 00494 } 00495 } 00496 } 00497 // 3 previous loops continued to the end 00498 inElastic = false; // quasi-elastic scattering. 00499 return; 00500 } 00501 00502 outOfLoop: // <------------------------------------------------------------------------ 00503 00504 ran = G4UniformRand(); 00505 00506 if( targetCode == protonCode) 00507 { 00508 if( npos == nneg) 00509 { 00510 if (ran < 0.40) 00511 { 00512 } 00513 else if (ran < 0.8) 00514 { 00515 pv[0] = AntiSigmaZero; 00516 } 00517 else 00518 { 00519 pv[0] = AntiSigmaMinus; 00520 pv[1] = Neutron; 00521 } 00522 } 00523 else if (npos == (nneg+1)) 00524 { 00525 if( ran < 0.25) 00526 { 00527 pv[1] = Neutron; 00528 } 00529 else if (ran < 0.5) 00530 { 00531 pv[0] = AntiSigmaZero; 00532 pv[1] = Neutron; 00533 } 00534 else 00535 { 00536 pv[0] = AntiSigmaPlus; 00537 } 00538 } 00539 else if (npos == (nneg-1)) 00540 { 00541 pv[0] = AntiSigmaMinus; 00542 } 00543 else 00544 { 00545 pv[0] = AntiSigmaPlus; 00546 pv[1] = Neutron; 00547 } 00548 } 00549 else 00550 { 00551 if( npos == nneg) 00552 { 00553 if (ran < 0.4) 00554 { 00555 } 00556 else if(ran < 0.8) 00557 { 00558 pv[0] = AntiSigmaZero; 00559 } 00560 else 00561 { 00562 pv[0] = AntiSigmaPlus; 00563 pv[1] = Proton; 00564 } 00565 } 00566 else if ( npos == (nneg-1)) 00567 { 00568 if (ran < 0.5) 00569 { 00570 pv[0] = AntiSigmaMinus; 00571 } 00572 else if (ran < 0.75) 00573 { 00574 pv[1] = Proton; 00575 } 00576 else 00577 { 00578 pv[0] = AntiSigmaZero; 00579 pv[1] = Proton; 00580 } 00581 } 00582 else if (npos == (nneg+1)) 00583 { 00584 pv[0] = AntiSigmaPlus; 00585 } 00586 else 00587 { 00588 pv[0] = AntiSigmaMinus; 00589 pv[1] = Proton; 00590 } 00591 } 00592 00593 } 00594 else // annihilation 00595 { 00596 if ( availableEnergy > 2. * PionPlus.getMass() ) 00597 { 00598 00599 G4double aleab = std::log(availableEnergy); 00600 G4double n = 3.62567+aleab*(0.665843+aleab*(0.336514 00601 + aleab*(0.117712+0.0136912*aleab))) - 2.0; 00602 00603 // normalization constant for kno-distribution. 00604 // calculate first the sum of all constants, check for numerical problems. 00605 G4double test, dum, anpn = 0.0; 00606 00607 for (nt=2; nt<=numSec; nt++) { 00608 test = std::exp( std::min( expxu, std::max( expxl, -(pi/4.0)*(nt*nt)/(n*n) ) ) ); 00609 dum = pi*nt/(2.0*n*n); 00610 if (std::fabs(dum) < 1.0) { 00611 if( test >= 1.0e-10 )anpn += dum*test; 00612 } else { 00613 anpn += dum*test; 00614 } 00615 } 00616 00617 G4double ran = G4UniformRand(); 00618 G4double excs = 0.0; 00619 if( targetCode == protonCode ) 00620 { 00621 counter = -1; 00622 for( npos=1; npos<numSec/3; npos++ ) 00623 { 00624 nneg = npos-1; 00625 for( nzero=0; nzero<numSec/3; nzero++ ) 00626 { 00627 if( ++counter < numMulAn ) 00628 { 00629 nt = npos+nneg+nzero; 00630 if ( (nt>1) && (nt<=numSec) ) { 00631 test = std::exp( std::min( expxu, std::max( expxl, -(pi/4.0)*(nt*nt)/(n*n) ) ) ); 00632 dum = (pi/anpn)*nt*protmulAn[counter]*protnormAn[nt-1]/(2.0*n*n); 00633 if (std::fabs(dum) < 1.0) { 00634 if( test >= 1.0e-10 )excs += dum*test; 00635 } else { 00636 excs += dum*test; 00637 } 00638 00639 if (ran < excs) goto outOfLoopAn; //-----------------------> 00640 } 00641 } 00642 } 00643 } 00644 // 3 previous loops continued to the end 00645 inElastic = false; // quasi-elastic scattering 00646 return; 00647 } 00648 else 00649 { // target must be a neutron 00650 counter = -1; 00651 for( npos=0; npos<numSec/3; npos++ ) 00652 { 00653 nneg = npos; 00654 for( nzero=0; nzero<numSec/3; nzero++ ) 00655 { 00656 if( ++counter < numMulAn ) 00657 { 00658 nt = npos+nneg+nzero; 00659 if ( (nt>1) && (nt<=numSec) ) { 00660 test = std::exp( std::min( expxu, std::max( expxl, -(pi/4.0)*(nt*nt)/(n*n) ) ) ); 00661 dum = (pi/anpn)*nt*neutmulAn[counter]*neutnormAn[nt-1]/(2.0*n*n); 00662 if (std::fabs(dum) < 1.0) { 00663 if( test >= 1.0e-10 )excs += dum*test; 00664 } else { 00665 excs += dum*test; 00666 } 00667 if (ran < excs) goto outOfLoopAn; // --------------------------> 00668 } 00669 } 00670 } 00671 } 00672 inElastic = false; // quasi-elastic scattering. 00673 return; 00674 } 00675 outOfLoopAn: // <------------------------------------------------------------------ 00676 vecLen = 0; 00677 } 00678 } 00679 00680 nt = npos + nneg + nzero; 00681 while ( nt > 0) 00682 { 00683 G4double ran = G4UniformRand(); 00684 if ( ran < (G4double)npos/nt) 00685 { 00686 if( npos > 0 ) 00687 { pv[vecLen++] = PionPlus; 00688 npos--; 00689 } 00690 } 00691 else if ( ran < (G4double)(npos+nneg)/nt) 00692 { 00693 if( nneg > 0 ) 00694 { 00695 pv[vecLen++] = PionMinus; 00696 nneg--; 00697 } 00698 } 00699 else 00700 { 00701 if( nzero > 0 ) 00702 { 00703 pv[vecLen++] = PionZero; 00704 nzero--; 00705 } 00706 } 00707 nt = npos + nneg + nzero; 00708 } 00709 if (verboseLevel > 1) 00710 { 00711 G4cout << "Particles produced: " ; 00712 G4cout << pv[0].getCode() << " " ; 00713 G4cout << pv[1].getCode() << " " ; 00714 for (i=2; i < vecLen; i++) 00715 { 00716 G4cout << pv[i].getCode() << " " ; 00717 } 00718 G4cout << G4endl; 00719 } 00720 return; 00721 }
| G4int G4HEAntiXiZeroInelastic::GetNumberOfSecondaries | ( | ) | [inline] |
Definition at line 74 of file G4HEAntiXiZeroInelastic.hh.
References vecLength.
00074 {return vecLength;}
| void G4HEAntiXiZeroInelastic::ModelDescription | ( | std::ostream & | ) | const [virtual] |
Reimplemented from G4HadronicInteraction.
Definition at line 42 of file G4HEAntiXiZeroInelastic.cc.
00043 { 00044 outFile << "G4HEAntiXiZeroInelastic is one of the High Energy\n" 00045 << "Parameterized (HEP) models used to implement inelastic\n" 00046 << "anti-Xi0 scattering from nuclei. It is a re-engineered\n" 00047 << "version of the GHEISHA code of H. Fesefeldt. It divides the\n" 00048 << "initial collision products into backward- and forward-going\n" 00049 << "clusters which are then decayed into final state hadrons.\n" 00050 << "The model does not conserve energy on an event-by-event\n" 00051 << "basis. It may be applied to anti-Xi0 with initial energies\n" 00052 << "above 20 GeV.\n"; 00053 }
Definition at line 69 of file G4HEAntiXiZeroInelastic.hh.
Referenced by ApplyYourself(), G4HEAntiXiZeroInelastic(), and GetNumberOfSecondaries().
1.4.7