| 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 | // |
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| 27 | // $Id: G4PairingCorrection.hh,v 1.6 2009/03/04 11:05:02 gcosmo Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-03-ref-09 $ |
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| 29 | // |
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| 30 | // Hadronic Process: Nuclear De-excitations |
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| 31 | // by V. Lara |
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| 32 | |
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| 33 | #ifndef G4PairingCorrection_h |
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| 34 | #define G4PairingCorrection_h 1 |
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| 35 | |
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| 36 | #include "globals.hh" |
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| 37 | #include "G4CookPairingCorrections.hh" |
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| 38 | #include "G4CameronGilbertPairingCorrections.hh" |
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| 39 | //#include "G4CameronTruranHilfPairingCorrections.hh" |
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| 40 | |
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| 41 | |
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| 42 | class G4PairingCorrection |
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| 43 | { |
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| 44 | private: |
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| 45 | |
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| 46 | // Dummy constructor |
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| 47 | G4PairingCorrection(); |
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| 48 | |
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| 49 | static G4PairingCorrection* theInstance; |
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| 50 | |
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| 51 | public: |
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| 52 | |
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| 53 | static G4PairingCorrection* GetInstance(); |
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| 54 | |
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| 55 | ~G4PairingCorrection(); |
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| 56 | |
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| 57 | G4double GetPairingCorrection(const G4int A, const G4int Z) const |
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| 58 | { |
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| 59 | G4double PCorrection = 0.0; |
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| 60 | const G4int N = A - Z; |
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| 61 | if (theCookPairingCorrections->IsInTableThisN(N) && |
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| 62 | theCookPairingCorrections->IsInTableThisZ(Z)) |
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| 63 | PCorrection = theCookPairingCorrections->GetParingCorrection(A,Z); |
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| 64 | else if (theCameronGilbertPairingCorrections->IsInTableThisN(N) && |
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| 65 | theCameronGilbertPairingCorrections->IsInTableThisZ(Z)) |
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| 66 | PCorrection = theCameronGilbertPairingCorrections->GetPairingCorrection(A,Z); |
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| 67 | else { |
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| 68 | const G4double PairingConstant = 12.0*MeV; |
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| 69 | G4double Pair = (1.0 - static_cast<G4double>(Z) + 2.0*(Z/2)) + (1.0 - static_cast<G4double>(N) + 2.0*(N/2)); |
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| 70 | PCorrection = Pair*PairingConstant/std::sqrt(static_cast<G4double>(A)); |
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| 71 | } |
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| 72 | return std::max(PCorrection,0.0); |
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| 73 | } |
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| 74 | |
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| 75 | |
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| 76 | G4double GetFissionPairingCorrection(const G4int A, const G4int Z) const |
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| 77 | { |
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| 78 | const G4double PairingConstant = 14.0*MeV; |
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| 79 | const G4int N = A - Z; |
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| 80 | G4double Pair = (1.0 - static_cast<G4double>(Z) + 2.0*(Z/2)) + (1.0 - static_cast<G4double>(N) + 2.0*(N/2)); |
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| 81 | G4double PCorrection = Pair*PairingConstant/std::sqrt(static_cast<G4double>(A)); |
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| 82 | return PCorrection; |
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| 83 | } |
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| 84 | |
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| 85 | private: |
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| 86 | |
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| 87 | |
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| 88 | G4CookPairingCorrections* theCookPairingCorrections; |
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| 89 | // G4CameronTruranHilfPairingCorrections* theCameronTruranHilfPairingCorrections; |
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| 90 | G4CameronGilbertPairingCorrections* theCameronGilbertPairingCorrections; |
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| 91 | |
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| 92 | }; |
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| 93 | #endif |
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