[819] | 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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[1192] | 26 | // $Id: G4CrossSectionExcitationBornPartial.cc,v 1.4 2009/06/10 13:32:36 mantero Exp $ |
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[1337] | 27 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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[819] | 28 | |
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| 29 | #include "G4CrossSectionExcitationBornPartial.hh" |
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| 30 | |
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[961] | 31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[819] | 32 | |
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| 33 | G4CrossSectionExcitationBornPartial::G4CrossSectionExcitationBornPartial() |
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| 34 | { |
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| 35 | table = 0; |
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| 36 | } |
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| 37 | |
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[961] | 38 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[819] | 39 | |
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| 40 | G4CrossSectionExcitationBornPartial::~G4CrossSectionExcitationBornPartial() |
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| 41 | { |
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| 42 | delete table; |
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| 43 | } |
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| 44 | |
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[961] | 45 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[819] | 46 | |
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| 47 | G4int G4CrossSectionExcitationBornPartial::RandomSelect(G4double k) |
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| 48 | { |
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| 49 | G4int level = 0; |
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| 50 | |
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| 51 | if (table == 0) |
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[961] | 52 | { |
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| 53 | table = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,(1e-22/3.343)*m*m ); |
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| 54 | table->LoadData("dna/sigma_excitation_p_born"); |
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| 55 | } |
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[819] | 56 | |
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| 57 | G4double* valuesBuffer = new G4double[table->NumberOfComponents()]; |
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| 58 | |
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| 59 | const size_t n(table->NumberOfComponents()); |
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| 60 | size_t i(n); |
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| 61 | G4double value = 0.; |
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| 62 | |
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| 63 | while (i>0) |
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[961] | 64 | { |
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| 65 | i--; |
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| 66 | valuesBuffer[i] = table->GetComponent(i)->FindValue(k); |
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| 67 | value += valuesBuffer[i]; |
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| 68 | } |
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[819] | 69 | |
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| 70 | value *= G4UniformRand(); |
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| 71 | |
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| 72 | i = n; |
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| 73 | |
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| 74 | while (i > 0) |
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[961] | 75 | { |
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| 76 | i--; |
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| 77 | |
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| 78 | if (valuesBuffer[i] > value) |
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[819] | 79 | { |
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[961] | 80 | delete[] valuesBuffer; |
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| 81 | return i; |
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| 82 | } |
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[819] | 83 | value -= valuesBuffer[i]; |
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[961] | 84 | } |
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[819] | 85 | |
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| 86 | if (valuesBuffer) delete[] valuesBuffer; |
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| 87 | |
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| 88 | return level; |
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| 89 | } |
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| 90 | |
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