| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | // $Id: G4HyperNucleiProperties.cc,v 1.3 2007/12/10 16:30:47 gunter Exp $
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| 27 | // GEANT4 tag $Name: HEAD $
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| 28 | //
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| 29 | // ------------------------------------------------------------
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| 30 | // GEANT 4 class header file
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| 31 | //
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| 32 | // ------------------------------------------------------------
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| 33 | // Hyper Nuclei properties based on CHIPS model (Mikhail KOSOV)
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| 34 | // Migrate into particles category by H.Kurashige (Sep. 2007)
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| 35 | //
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| 36 | #include "G4HyperNucleiProperties.hh"
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| 37 | #include "G4NucleiProperties.hh"
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| 38 | #include "G4ParticleTable.hh"
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| 39 |
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| 40 |
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| 41 | G4double G4HyperNucleiProperties::GetNuclearMass(G4int A, G4int Z, G4int L)
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| 42 | {
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| 43 | if (L==0) return G4NucleiProperties::GetNuclearMass(A, Z);
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| 44 |
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| 45 | G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
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| 46 | if (A < 2 || Z < 0 || Z > A-L || L>A ) {
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| 47 | #ifdef G4VERBOSE
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| 48 | if (pTable->GetVerboseLevel()>0) {
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| 49 | G4cout << "G4HyperNucleiProperties::GetNuclearMass: "
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| 50 | << " Wrong values for A = " << A
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| 51 | << " Z = " << Z
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| 52 | << " L = " << L
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| 53 | << G4endl;
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| 54 | }
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| 55 | #endif
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| 56 | return 0.0;
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| 57 | } else if( A==2 ) {
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| 58 | #ifdef G4VERBOSE
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| 59 | if (pTable->GetVerboseLevel()>0) {
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| 60 | G4cout << "G4HyperNucleiProperties::GetNuclearMass: "
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| 61 | << " No boud state for A = " << A
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| 62 | << " Z = " << Z
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| 63 | << " L = " << L
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| 64 | << G4endl;
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| 65 | }
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| 66 | #endif
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| 67 | return 0.0;
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| 68 | }
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| 69 |
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| 70 |
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| 71 | G4ParticleDefinition* lambda = pTable->FindParticle("lambda");
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| 72 | if (lambda ==0) {
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| 73 | #ifdef G4VERBOSE
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| 74 | if (pTable->GetVerboseLevel()>0) {
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| 75 | G4cout << "G4HyperNucleiProperties::GetNuclearMass: "
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| 76 | << " Lambda is not defined " << G4endl;
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| 77 | }
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| 78 | #endif
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| 79 | return 0.0;
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| 80 | }
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| 81 | const G4double mL= lambda->GetPDGMass(); // mLambda
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| 82 |
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| 83 | static const G4double b7=25.*MeV;
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| 84 | static const G4double b8=10.5; // Slope
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| 85 | static const G4double a2=0.13*MeV; // BindingEnergy for d+Lambda(MeV)
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| 86 | static const G4double a3=2.2*MeV; // BindingEnergy for (t/He3)+Lamb(MeV)
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| 87 | static const G4double eps =0.0001*MeV; // security value (MeV)
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| 88 |
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| 89 | G4double mass = G4NucleiProperties::GetNuclearMass(A-L, Z);
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| 90 | // A non-"strange" nucleus
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| 91 | G4double bs=0.;
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| 92 | if (A-L ==2) bs=a2; // for nnL,npL,ppL
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| 93 | else if(A-L ==3) bs=a3; // for 3nL,2npL,n2pL,3pL
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| 94 | else if(A-L >3) bs=b7*std::exp(-b8/(A-L+1.));
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| 95 | mass += L*(mL-bs) + eps;
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| 96 |
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| 97 | return mass;
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| 98 | }
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| 99 |
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| 100 |
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| 101 | G4double G4HyperNucleiProperties::GetAtomicMass(G4int A, G4int Z, G4int L)
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| 102 | {
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| 103 | if (L==0) return G4NucleiProperties::GetAtomicMass(A,Z);
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| 104 |
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| 105 | if (A < 1 || Z < 0 || Z > A-L || L > A || L <0 ) {
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| 106 | #ifdef G4VERBOSE
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| 107 | if (G4ParticleTable::GetParticleTable()->GetVerboseLevel()>0) {
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| 108 | G4cout << "G4HyperNucleiProperties::GetAtomicMass: "
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| 109 | << " Wrong values for A = " << A
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| 110 | << " Z = " << Z
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| 111 | << " L = " << L << G4endl;
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| 112 | }
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| 113 | #endif
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| 114 | return 0.0;
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| 115 |
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| 116 | } else {
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| 117 | G4double nuclearMass = GetNuclearMass(A, Z, L);
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| 118 | return nuclearMass + Z*electron_mass_c2
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| 119 | - 1.433e-5*MeV*std::pow(G4double(Z),2.39);
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| 120 | }
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| 121 | }
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| 122 |
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