Geant4 Cross Reference |
1 // 1 2 // ******************************************* 3 // * License and Disclaimer 4 // * 5 // * The Geant4 software is copyright of th 6 // * the Geant4 Collaboration. It is provided 7 // * conditions of the Geant4 Software License 8 // * LICENSE and available at http://cern.ch/ 9 // * include a list of copyright holders. 10 // * 11 // * Neither the authors of this software syst 12 // * institutes,nor the agencies providing fin 13 // * work make any representation or warran 14 // * regarding this software system or assum 15 // * use. Please see the license in the file 16 // * for the full disclaimer and the limitatio 17 // * 18 // * This code implementation is the result 19 // * technical work of the GEANT4 collaboratio 20 // * By using, copying, modifying or distri 21 // * any work based on the software) you ag 22 // * use in resulting scientific publicati 23 // * acceptance of all terms of the Geant4 Sof 24 // ******************************************* 25 // 26 // G4HyperNucleiProperties class implementatio 27 // 28 // Author: Mikhail Kosov 29 // Revision: H.Kurashige, Migrated to particle 30 // ------------------------------------------- 31 32 #include "G4HyperNucleiProperties.hh" 33 34 #include "G4Exp.hh" 35 #include "G4NucleiProperties.hh" 36 #include "G4ParticleTable.hh" 37 #include "G4PhysicalConstants.hh" 38 #include "G4Pow.hh" 39 #include "G4SystemOfUnits.hh" 40 41 G4double G4HyperNucleiProperties::GetNuclearMa 42 { 43 if (LL == 0) return G4NucleiProperties::GetN 44 45 if (A < 2 || Z < 0 || Z > A - LL || LL > A) 46 #ifdef G4VERBOSE 47 if (G4ParticleTable::GetParticleTable()->G 48 G4cout << "G4HyperNucleiProperties::GetN 49 << " Wrong values for A = " << A 50 } 51 #endif 52 return 0.0; 53 } 54 if (A == 2) { 55 #ifdef G4VERBOSE 56 if (G4ParticleTable::GetParticleTable()->G 57 G4cout << "G4HyperNucleiProperties::GetN 58 << " No boud state for A = " << A 59 } 60 #endif 61 return 0.0; 62 } 63 64 static const G4double b7 = 25.0 * MeV; 65 static const G4double b8 = 10.5; // Slope 66 static const G4double a2 = 0.13 * MeV; // B 67 static const G4double a3 = 2.2 * MeV; // Bi 68 static const G4double eps = 0.0001 * MeV; / 69 70 G4double mass = G4NucleiProperties::GetNucle 71 72 // Temporarily, the mass of the Lambda below 73 // but it should be added in CLHEP/Units/Phy 74 const G4double mLL = 1.115683 * CLHEP::GeV; 75 76 G4double bs = 0.0; 77 if (A - LL == 2) 78 bs = a2; // for nnL,npL,ppL 79 else if (A - LL == 3) 80 bs = a3; // for 3nL,2npL,n2pL,3pL 81 else if (A - LL > 3) 82 bs = b7 * G4Exp(-b8 / (A - LL + 1.0)); 83 mass += LL * (mLL - bs) + eps; 84 85 return mass; 86 } 87 88 G4double G4HyperNucleiProperties::GetAtomicMas 89 { 90 G4double mass = GetNuclearMass(A, Z, LL); 91 if (mass > 0.0) { 92 mass += Z * electron_mass_c2 - 1.433e-5 * 93 } 94 return mass; 95 } 96