| 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: G4ionEffectiveCharge.hh,v 1.12 2008/09/20 19:39:34 vnivanch Exp $ |
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| 27 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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| 28 | // |
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| 29 | // ------------------------------------------------------------------- |
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| 30 | // |
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| 31 | // GEANT4 Class header file |
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| 32 | // |
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| 33 | // |
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| 34 | // File name: G4ionEffectiveCharge |
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| 35 | // |
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| 36 | // Author: Vladimir Ivanchenko |
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| 37 | // |
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| 38 | // Creation date: 03.07.2004 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // |
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| 42 | // |
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| 43 | // Class Description: |
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| 44 | // |
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| 45 | // This class manages the simulation of effective charge of ions |
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| 46 | // in the assumption of equilibrium between ion shelss and media. |
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| 47 | // J.F.Ziegler and J.M.Manoyan, The stopping of ions in compaunds, |
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| 48 | // Nucl. Inst. & Meth. in Phys. Res. B35 (1988) 215-228. |
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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 | |
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| 54 | #ifndef G4ionEffectiveCharge_h |
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| 55 | #define G4ionEffectiveCharge_h 1 |
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| 56 | |
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| 57 | #include "globals.hh" |
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| 58 | #include "G4ParticleDefinition.hh" |
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| 59 | |
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| 60 | class G4Material; |
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| 61 | class G4NistManager; |
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| 62 | |
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| 63 | class G4ionEffectiveCharge |
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| 64 | { |
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| 65 | |
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| 66 | public: |
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| 67 | |
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| 68 | G4ionEffectiveCharge(); |
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| 69 | |
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| 70 | virtual ~G4ionEffectiveCharge(); |
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| 71 | |
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| 72 | G4double EffectiveChargeSquareRatio( |
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| 73 | const G4ParticleDefinition* p, |
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| 74 | const G4Material* material, |
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| 75 | G4double kineticEnergy); |
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| 76 | |
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| 77 | G4double EffectiveCharge(const G4ParticleDefinition* p, |
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| 78 | const G4Material* material, |
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| 79 | G4double kineticEnergy); |
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| 80 | |
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| 81 | private: |
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| 82 | |
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| 83 | // hide assignment operator |
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| 84 | G4ionEffectiveCharge & operator=(const G4ionEffectiveCharge &right); |
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| 85 | G4ionEffectiveCharge(const G4ionEffectiveCharge&); |
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| 86 | |
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| 87 | G4NistManager* nist; |
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| 88 | |
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| 89 | const G4ParticleDefinition* lastPart; |
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| 90 | const G4Material* lastMat; |
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| 91 | G4double lastKinEnergy; |
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| 92 | |
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| 93 | G4double chargeCorrection; |
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| 94 | G4double effCharge; |
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| 95 | |
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| 96 | G4double energyHighLimit; |
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| 97 | G4double energyLowLimit; |
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| 98 | G4double energyBohr; |
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| 99 | G4double massFactor; |
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| 100 | G4double minCharge; |
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| 101 | }; |
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| 102 | |
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| 103 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 104 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 105 | |
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| 106 | inline G4double G4ionEffectiveCharge::EffectiveChargeSquareRatio( |
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| 107 | const G4ParticleDefinition* p, |
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| 108 | const G4Material* material, |
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| 109 | G4double kineticEnergy) |
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| 110 | { |
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| 111 | G4double charge = effCharge; |
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| 112 | if( kineticEnergy != lastKinEnergy || material != lastMat || p != lastPart) { |
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| 113 | charge = EffectiveCharge(p,material,kineticEnergy); |
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| 114 | } |
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| 115 | charge *= chargeCorrection/CLHEP::eplus; |
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| 116 | |
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| 117 | return charge*charge; |
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| 118 | } |
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| 119 | |
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| 120 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 121 | |
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| 122 | #endif |
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