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: G4CrossSectionIonisationBornElectron.cc,v 1.2 2007/11/08 18:51:34 pia Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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29 | // |
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30 | // Contact Author: Maria Grazia Pia (Maria.Grazia.Pia@cern.ch) |
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31 | // |
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32 | // Reference: TNS Geant4-DNA paper |
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33 | // Reference for implementation model: NIM. 155, pp. 145-156, 1978 |
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34 | |
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35 | // History: |
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36 | // ----------- |
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37 | // Date Name Modification |
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38 | // 28 Apr 2007 M.G. Pia Created in compliance with design described in TNS paper |
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39 | // |
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40 | // ------------------------------------------------------------------- |
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41 | |
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42 | // Class description: |
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43 | // Geant4-DNA Cross total cross section for electron elastic scattering in water |
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44 | // Reference: TNS Geant4-DNA paper |
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45 | // S. Chauvie et al., Geant4 physics processes for microdosimetry simulation: |
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46 | // design foundation and implementation of the first set of models, |
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47 | // IEEE Trans. Nucl. Sci., vol. 54, no. 6, Dec. 2007. |
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48 | // Further documentation available from http://www.ge.infn.it/geant4/dna |
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49 | |
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50 | // ------------------------------------------------------------------- |
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51 | |
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52 | |
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53 | #include "G4CrossSectionIonisationBornElectron.hh" |
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54 | #include "G4Track.hh" |
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55 | #include "G4DynamicParticle.hh" |
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56 | #include "G4ParticleDefinition.hh" |
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57 | #include "G4Electron.hh" |
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58 | #include "G4LogLogInterpolation.hh" |
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59 | |
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60 | #include "Randomize.hh" |
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61 | |
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62 | G4CrossSectionIonisationBornElectron::G4CrossSectionIonisationBornElectron() |
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63 | { |
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64 | |
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65 | // ---- MGP ---- Limits to be checked: current values are just temporary for testing purpose |
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66 | lowEnergyLimit = 7.4 * eV; |
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67 | highEnergyLimit = 10 * keV; |
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68 | |
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69 | table = 0; |
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70 | } |
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71 | |
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72 | |
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73 | G4CrossSectionIonisationBornElectron::~G4CrossSectionIonisationBornElectron() |
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74 | { |
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75 | delete table; |
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76 | } |
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77 | |
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78 | G4double G4CrossSectionIonisationBornElectron::CrossSection(const G4Track& track) |
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79 | { |
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80 | // Lazy initialisation: load cross section tables in memory the first time access to them is required |
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81 | |
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82 | G4double sigma = 0.; |
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83 | |
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84 | if (table == 0) |
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85 | { |
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86 | // Load tables |
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87 | // ---- MGP ---- |
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88 | table = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,(1e-22/3.343)*m*m ); |
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89 | table->LoadData("dna/sigma_ionisation_e_born"); |
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90 | |
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91 | // ---- MGP ---- Temporary |
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92 | table->PrintData(); |
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93 | } |
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94 | |
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95 | const G4DynamicParticle* particle = track.GetDynamicParticle(); |
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96 | G4double k = particle->GetKineticEnergy(); |
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97 | |
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98 | if (k > lowEnergyLimit && k < highEnergyLimit) |
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99 | { |
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100 | sigma = table->FindValue(k); // no electron interaction ---- MGP ---- What does this mean? |
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101 | } |
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102 | return sigma; |
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103 | } |
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104 | |
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105 | |
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