Gabriele Cosmo
123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4ionEffectiveCharge.hh 100363 2016-10-19 09:24:47Z gcosmo $
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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class header file
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//
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//
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// File name: G4ionEffectiveCharge
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//
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// Author: Vladimir Ivanchenko
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//
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// Creation date: 03.07.2004
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//
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// Modifications:
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//
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//
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// Class Description:
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//
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// This class manages the simulation of effective charge of ions
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// in the assumption of equilibrium between ion shelss and media.
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// J.F.Ziegler and J.M.Manoyan, The stopping of ions in compaunds,
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// Nucl. Inst. & Meth. in Phys. Res. B35 (1988) 215-228.
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//
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// -------------------------------------------------------------------
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//
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#ifndef G4ionEffectiveCharge_h
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#define G4ionEffectiveCharge_h 1
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#include "globals.hh"
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#include "G4ParticleDefinition.hh"
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class G4Material;
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class G4Pow;
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class G4ionEffectiveCharge
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{
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public:
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explicit G4ionEffectiveCharge();
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virtual ~G4ionEffectiveCharge();
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G4double EffectiveChargeSquareRatio(
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const G4ParticleDefinition* p,
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const G4Material* material,
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G4double kineticEnergy);
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G4double EffectiveCharge(const G4ParticleDefinition* p,
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const G4Material* material,
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G4double kineticEnergy);
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private:
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// hide assignment operator
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G4ionEffectiveCharge & operator=(const G4ionEffectiveCharge &right) = delete;
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G4ionEffectiveCharge(const G4ionEffectiveCharge&) = delete;
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static const G4double inveplus;
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G4Pow* g4calc;
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const G4ParticleDefinition* lastPart;
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const G4Material* lastMat;
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G4double lastKinEnergy;
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G4double chargeCorrection;
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G4double effCharge;
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G4double energyHighLimit;
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G4double energyLowLimit;
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G4double energyBohr;
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G4double massFactor;
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G4double minCharge;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4ionEffectiveCharge::EffectiveChargeSquareRatio(
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const G4ParticleDefinition* p,
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const G4Material* material,
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G4double kineticEnergy)
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{
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G4double charge = effCharge;
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if( kineticEnergy != lastKinEnergy || material != lastMat || p != lastPart) {
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charge = EffectiveCharge(p,material,kineticEnergy);
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}
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charge *= chargeCorrection*inveplus;
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return charge*charge;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#endif
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