| 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: G4He3CoulombBarrier.cc,v 1.6 2010/11/15 12:44:06 vnivanch Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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| 29 | // |
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| 30 | // Hadronic Process: Nuclear De-excitations |
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| 31 | // by V. Lara (Dec 1999) |
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| 32 | |
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| 33 | |
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| 34 | #include "G4He3CoulombBarrier.hh" |
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| 35 | |
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| 36 | G4He3CoulombBarrier::G4He3CoulombBarrier() : G4CoulombBarrier(3,2) {} |
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| 37 | G4He3CoulombBarrier::~G4He3CoulombBarrier() {} |
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| 38 | |
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| 39 | G4double G4He3CoulombBarrier::BarrierPenetrationFactor(G4double aZ) const |
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| 40 | { |
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| 41 | // Data comes from |
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| 42 | // Dostrovsky, Fraenkel and Friedlander |
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| 43 | // Physical Review, vol 116, num. 3 1959 |
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| 44 | // |
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| 45 | // const G4int size = 5; |
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| 46 | // const G4double Zlist[size] = {10.0, 20.0, 30.0, 50.0, 70.0}; |
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| 47 | // const G4double KHe3[size] = {0.68, 0.82, 0.91, 0.97, 0.98}; |
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| 48 | // |
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| 49 | // K for He3 is K for alphas + 0.12 |
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| 50 | G4double K = 1.0; |
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| 51 | if (aZ>=70.0) { |
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| 52 | K = 0.98; |
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| 53 | } else { |
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| 54 | K = (((0.23684e-5*aZ) - 0.42143e-3)*aZ + 0.25222e-1)*aZ + 0.46699; |
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| 55 | } |
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| 56 | return K+0.12; |
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| 57 | } |
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