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Geant4/processes/hadronic/models/de_excitation/util/src/G4CoulombBarrier.cc

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Differences between /processes/hadronic/models/de_excitation/util/src/G4CoulombBarrier.cc (Version 11.3.0) and /processes/hadronic/models/de_excitation/util/src/G4CoulombBarrier.cc (Version 8.1.p1)


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 26 //                                                 26 //
                                                   >>  27 // $Id: G4CoulombBarrier.cc,v 1.6 2006/06/29 20:28:21 gunter Exp $
                                                   >>  28 // GEANT4 tag $Name: geant4-08-01-patch-01 $
                                                   >>  29 //
 27 // Hadronic Process: Nuclear De-excitations        30 // Hadronic Process: Nuclear De-excitations
 28 // by V. Lara (Dec 1999)                           31 // by V. Lara (Dec 1999)
 29 //                                             <<  32 
 30 // 14-11-2007 modified barrier by JMQ (test30) << 
 31 // 15-11-2010 V.Ivanchenko use G4Pow and clean << 
 32                                                    33 
 33 #include "G4CoulombBarrier.hh"                     34 #include "G4CoulombBarrier.hh"
 34 #include "G4PhysicalConstants.hh"              <<  35 #include "G4HadronicException.hh"
 35 #include "G4SystemOfUnits.hh"                  <<  36 #include <sstream>
 36 #include "G4NuclearRadii.hh"                   <<  37 
                                                   >>  38 G4CoulombBarrier::G4CoulombBarrier(const G4CoulombBarrier & ) : G4VCoulombBarrier()
                                                   >>  39 {
                                                   >>  40   throw G4HadronicException(__FILE__, __LINE__, "G4CoulombBarrier::copy_constructor meant to not be accessable.");
                                                   >>  41 }
                                                   >>  42 
                                                   >>  43 
                                                   >>  44 const G4CoulombBarrier & G4CoulombBarrier::operator=(const G4CoulombBarrier & )
                                                   >>  45 {
                                                   >>  46   throw G4HadronicException(__FILE__, __LINE__, "G4CoulombBarrier::operator= meant to not be accessable.");
                                                   >>  47   return *this;
                                                   >>  48 }
 37                                                    49 
 38 G4CoulombBarrier::G4CoulombBarrier(G4int A, G4 <<  50 G4bool G4CoulombBarrier::operator==(const G4CoulombBarrier & ) const 
 39   : G4VCoulombBarrier(A, Z)                    << 
 40 {                                                  51 {
 41   factor = CLHEP::elm_coupling*Z;              <<  52   return false;
 42   SetParameters(0.4*G4NuclearRadii::RadiusCB(Z << 
 43 }                                                  53 }
 44                                                    54 
 45 G4double G4CoulombBarrier::GetCoulombBarrier(  <<  55 G4bool G4CoulombBarrier::operator!=(const G4CoulombBarrier & ) const 
 46          G4int ARes, G4int ZRes, G4double U) c << 
 47 {                                                  56 {
 48   if (0 == theZ) { return 0.0; }               <<  57   return true;
 49   G4double cb = factor*ZRes/(G4NuclearRadii::R << 
 50   if (U > 0.0) { cb /= (1.0 + std::sqrt( U/((2 << 
 51   return cb;                                   << 
 52 }                                                  58 }
 53                                                    59 
 54 G4double G4CoulombBarrier::BarrierPenetrationF <<  60 
                                                   >>  61 
                                                   >>  62 G4double G4CoulombBarrier::GetCoulombBarrier(const G4int ARes, const G4int ZRes, const G4double U) const 
                                                   >>  63   // Calculation of Coulomb potential energy (barrier) for outgoing fragment
 55 {                                                  64 {
 56   // Data comes from                           <<  65   G4double Barrier = 0.0;
 57   // Dostrovsky, Fraenkel and Friedlander      <<  66   if (ZRes > ARes || ARes < 1) {
 58   // Physical Review, vol 116, num. 3 1959     <<  67     std::ostringstream errOs;
 59   //                                           <<  68     errOs << "G4CoulombBarrier::GetCoulombBarrier: ";
 60   // const G4int size = 5;                     <<  69     errOs << "Wrong values for ";
 61   // const G4double Zlist[size] = {10.0, 20.0, <<  70     errOs << "residual nucleus A = " << ARes << " ";
 62   // const G4double Kprot[size] = {0.42, 0.58, <<  71     errOs << "and residual nucleus Z = " << ZRes << G4endl;
 63   //                                           <<  72 
 64   G4double res = 1.0;                          <<  73     throw G4HadronicException(__FILE__, __LINE__, errOs.str());
 65   if(theZ == 1) {                              << 
 66     res = (aZ >= 70) ? 0.80 :                  << 
 67     (((0.2357e-5*aZ) - 0.42679e-3)*aZ + 0.2703 << 
 68     res += 0.06*(theA - 1);                    << 
 69                                                << 
 70   } else if(theZ == 2 && theA <= 4) {          << 
 71     res = (aZ >= 70) ? 0.98 :                  << 
 72     (((0.23684e-5*aZ) - 0.42143e-3)*aZ + 0.252 << 
 73     res += 0.12*(4 - theA);                    << 
 74   }                                                74   }
 75   return res;                                  <<  75   if (GetA() == 1 && GetZ() == 0) {
                                                   >>  76     Barrier = 0.0;   // Neutron Coulomb Barrier is 0
                                                   >>  77   } else {
                                                   >>  78     G4double CompoundRadius = CalcCompoundRadius(static_cast<G4double>(ZRes));
                                                   >>  79     Barrier = elm_coupling/CompoundRadius * static_cast<G4double>(GetZ())*static_cast<G4double>(ZRes)/
                                                   >>  80       (std::pow(static_cast<G4double>(GetA()),1./3.) + std::pow(static_cast<G4double>(ARes),1./3.));
                                                   >>  81 
                                                   >>  82     // Barrier penetration coeficient
                                                   >>  83     G4double K = BarrierPenetrationFactor(ZRes);
                                                   >>  84     
                                                   >>  85     Barrier *= K;
                                                   >>  86     
                                                   >>  87     Barrier /= (1.0 + std::sqrt(U/(2.0*static_cast<G4double>(ARes))));
                                                   >>  88   }
                                                   >>  89   return Barrier;
 76 }                                                  90 }
                                                   >>  91 
                                                   >>  92 
                                                   >>  93 
 77                                                    94