Geant4 Cross Reference |
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These * 9 // * include a list of copyright holders. 9 // * include a list of copyright holders. * 10 // * 10 // * * 11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // 26 // 26 // 27 // 27 // 28 // Hadronic Process: Nuclear De-excitations 28 // Hadronic Process: Nuclear De-excitations 29 // by V. Lara 29 // by V. Lara 30 30 31 #include "G4StatMFFragment.hh" 31 #include "G4StatMFFragment.hh" 32 #include "G4PhysicalConstants.hh" 32 #include "G4PhysicalConstants.hh" 33 #include "G4HadronicException.hh" 33 #include "G4HadronicException.hh" 34 #include "G4Pow.hh" 34 #include "G4Pow.hh" 35 35 36 // Copy constructor 36 // Copy constructor 37 G4StatMFFragment::G4StatMFFragment(const G4Sta 37 G4StatMFFragment::G4StatMFFragment(const G4StatMFFragment & ) 38 { 38 { 39 throw G4HadronicException(__FILE__, __LINE 39 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFFragment::copy_constructor meant to not be accessible"); 40 } 40 } 41 41 42 // Operators 42 // Operators 43 43 44 G4StatMFFragment & G4StatMFFragment:: 44 G4StatMFFragment & G4StatMFFragment:: 45 operator=(const G4StatMFFragment & ) 45 operator=(const G4StatMFFragment & ) 46 { 46 { 47 throw G4HadronicException(__FILE__, __LINE 47 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFFragment::operator= meant to not be accessible"); 48 return *this; 48 return *this; 49 } 49 } 50 50 51 G4bool G4StatMFFragment::operator==(const G4St 51 G4bool G4StatMFFragment::operator==(const G4StatMFFragment & ) const 52 { 52 { 53 // throw G4HadronicException(__FILE__, __LINE 53 // throw G4HadronicException(__FILE__, __LINE__, "G4StatMFFragment::operator== meant to not be accessible"); 54 return false; 54 return false; 55 } 55 } 56 56 57 G4bool G4StatMFFragment::operator!=(const G4St 57 G4bool G4StatMFFragment::operator!=(const G4StatMFFragment & ) const 58 { 58 { 59 // throw G4HadronicException(__FILE__, __LINE 59 // throw G4HadronicException(__FILE__, __LINE__, "G4StatMFFragment::operator!= meant to not be accessible"); 60 return true; 60 return true; 61 } 61 } 62 62 63 G4double G4StatMFFragment::GetCoulombEnergy(vo 63 G4double G4StatMFFragment::GetCoulombEnergy(void) const 64 { 64 { 65 G4double res = 0.0; 65 G4double res = 0.0; 66 if (theZ >= 1) { 66 if (theZ >= 1) { 67 res = G4StatMFParameters::GetCoulomb(); 67 res = G4StatMFParameters::GetCoulomb(); 68 } 68 } 69 return res; 69 return res; 70 } 70 } 71 71 72 G4double G4StatMFFragment::GetEnergy(const G4d 72 G4double G4StatMFFragment::GetEnergy(const G4double T) const 73 { 73 { 74 if (theA < 1 || theZ < 0 || theZ > theA) { 74 if (theA < 1 || theZ < 0 || theZ > theA) { 75 G4cout << "G4StatMFFragment::GetEnergy: A 75 G4cout << "G4StatMFFragment::GetEnergy: A = " << theA 76 << ", Z = " << theZ << G4endl; 76 << ", Z = " << theZ << G4endl; 77 throw G4HadronicException(__FILE__, __LINE 77 throw G4HadronicException(__FILE__, __LINE__, 78 "G4StatMFFragment::GetEnergy: Wron 78 "G4StatMFFragment::GetEnergy: Wrong values for A and Z!"); 79 } 79 } 80 G4double BulkEnergy = G4NucleiProperties::Ge 80 G4double BulkEnergy = G4NucleiProperties::GetMassExcess(theA,theZ); 81 81 82 if (theA < 4) return BulkEnergy - GetCoulomb 82 if (theA < 4) return BulkEnergy - GetCoulombEnergy(); 83 83 84 G4double SurfaceEnergy; 84 G4double SurfaceEnergy; 85 if (G4StatMFParameters::DBetaDT(T) == 0.0) S 85 if (G4StatMFParameters::DBetaDT(T) == 0.0) SurfaceEnergy = 0.0; 86 else SurfaceEnergy = 2.5*G4Pow::GetInstance( 86 else SurfaceEnergy = 2.5*G4Pow::GetInstance()->Z23(theA)*T*T* 87 G4StatMFParameters::GetBeta0()/ 87 G4StatMFParameters::GetBeta0()/ 88 (G4StatMFParameters::GetCriticalTemp()* 88 (G4StatMFParameters::GetCriticalTemp()* 89 G4StatMFParameters::GetCriticalTemp()); 89 G4StatMFParameters::GetCriticalTemp()); 90 90 91 G4double ExchangeEnergy = theA*T*T/GetInvLev 91 G4double ExchangeEnergy = theA*T*T/GetInvLevelDensity(); 92 if (theA != 4) ExchangeEnergy += SurfaceEner 92 if (theA != 4) ExchangeEnergy += SurfaceEnergy; 93 return BulkEnergy + ExchangeEnergy - GetCoul 93 return BulkEnergy + ExchangeEnergy - GetCoulombEnergy(); 94 } 94 } 95 95 96 G4double G4StatMFFragment::GetInvLevelDensity( 96 G4double G4StatMFFragment::GetInvLevelDensity(void) const 97 { 97 { 98 G4double res = 0.0; 98 G4double res = 0.0; 99 if (theA > 1) { 99 if (theA > 1) { 100 res = G4StatMFParameters::GetEpsilon0()*( 100 res = G4StatMFParameters::GetEpsilon0()*(1.0+3.0/(theA - 1.0)); 101 } 101 } 102 return res; 102 return res; 103 } 103 } 104 104 105 G4Fragment * G4StatMFFragment::GetFragment(con 105 G4Fragment * G4StatMFFragment::GetFragment(const G4double T) 106 { 106 { 107 G4double U = CalcExcitationEnergy(T); 107 G4double U = CalcExcitationEnergy(T); 108 G4double M = GetNuclearMass(); 108 G4double M = GetNuclearMass(); 109 G4LorentzVector FourMomentum(_momentum,std:: 109 G4LorentzVector FourMomentum(_momentum,std::sqrt(_momentum.mag2()+(M+U)*(M+U))); 110 G4Fragment * theFragment = new G4Fragment(th 110 G4Fragment * theFragment = new G4Fragment(theA, theZ, FourMomentum); 111 return theFragment; 111 return theFragment; 112 } 112 } 113 113 114 G4double G4StatMFFragment::CalcExcitationEnerg 114 G4double G4StatMFFragment::CalcExcitationEnergy(const G4double T) 115 { 115 { 116 if (theA <= 3) return 0.0; 116 if (theA <= 3) return 0.0; 117 117 118 G4double BulkEnergy = theA*T*T/GetInvLevelDe 118 G4double BulkEnergy = theA*T*T/GetInvLevelDensity(); 119 119 120 // if it is an alpha particle: done 120 // if it is an alpha particle: done 121 if (theA == 4) return BulkEnergy; 121 if (theA == 4) return BulkEnergy; 122 122 123 // Term connected with surface energy 123 // Term connected with surface energy 124 G4double SurfaceEnergy = 0.0; 124 G4double SurfaceEnergy = 0.0; 125 G4double q = G4StatMFParameters::DBetaDT(T); 125 G4double q = G4StatMFParameters::DBetaDT(T); 126 if (std::abs(q) > 1.0e-20) { 126 if (std::abs(q) > 1.0e-20) { 127 SurfaceEnergy = 2.5*G4Pow::GetInstance()-> 127 SurfaceEnergy = 2.5*G4Pow::GetInstance()->Z23(theA) 128 *(G4StatMFParameters::Beta(T) - T*q - G4 128 *(G4StatMFParameters::Beta(T) - T*q - G4StatMFParameters::GetBeta0()); 129 } 129 } 130 return BulkEnergy + SurfaceEnergy; 130 return BulkEnergy + SurfaceEnergy; 131 } 131 } 132 132