Gabriele Cosmo
433 lines
15 KiB
C++
433 lines
15 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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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class file
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//
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//
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// File name: G4hParametrisedLossModel
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//
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// Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch)
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//
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// Creation date: 20 July 2000
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//
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// Modifications:
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// 20/07/2000 V.Ivanchenko First implementation
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// 18/08/2000 V.Ivanchenko TRIM85 model is added
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// 03/10/2000 V.Ivanchenko CodeWizard clean up
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// 10/05/2001 V.Ivanchenko Clean up againist Linux compilation with -Wall
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// 30/12/2003 V.Ivanchenko SRIM2003 model is added
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// 07/05/2004 V.Ivanchenko Fix Graphite problem, add QAO model
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//
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// Class Description:
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//
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// Low energy protons/ions electronic stopping power parametrisation
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//
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// Class Description: End
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//
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// -------------------------------------------------------------------
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#include "G4hParametrisedLossModel.hh"
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#include "G4UnitsTable.hh"
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#include "globals.hh"
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#include "G4hZiegler1977p.hh"
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#include "G4hZiegler1977He.hh"
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#include "G4hZiegler1985p.hh"
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#include "G4hSRIM2000p.hh"
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//#include "G4hQAOModel.hh"
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#include "G4hICRU49p.hh"
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#include "G4hICRU49He.hh"
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#include "G4DynamicParticle.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4ElementVector.hh"
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#include "G4Material.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4hParametrisedLossModel::G4hParametrisedLossModel(const G4String& name)
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:G4VLowEnergyModel(name), modelName(name)
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{
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InitializeMe();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4hParametrisedLossModel::InitializeMe()
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{
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theZieglerFactor = eV*cm2*1.0e-15 ;
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// Registration of parametrisation models
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G4String blank = G4String(" ") ;
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G4String zi77p = G4String("Ziegler1977p") ;
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G4String zi77He = G4String("Ziegler1977He") ;
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G4String ir49p = G4String("ICRU_R49p") ;
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G4String ir49He = G4String("ICRU_R49He") ;
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G4String zi85p = G4String("Ziegler1985p") ;
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G4String zi00p = G4String("SRIM2000p") ;
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G4String qao = G4String("QAO") ;
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if(zi77p == modelName) {
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eStopingPowerTable = new G4hZiegler1977p();
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highEnergyLimit = 100.0*MeV;
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lowEnergyLimit = 1.0*keV;
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} else if(zi77He == modelName) {
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eStopingPowerTable = new G4hZiegler1977He();
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highEnergyLimit = 10.0*MeV/4.0;
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lowEnergyLimit = 1.0*keV/4.0;
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} else if(zi85p == modelName) {
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eStopingPowerTable = new G4hZiegler1985p();
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highEnergyLimit = 100.0*MeV;
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lowEnergyLimit = 1.0*keV;
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} else if(zi00p == modelName ) {
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eStopingPowerTable = new G4hSRIM2000p();
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highEnergyLimit = 100.0*MeV;
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lowEnergyLimit = 1.0*keV;
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} else if(ir49p == modelName || blank == modelName) {
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eStopingPowerTable = new G4hICRU49p();
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highEnergyLimit = 2.0*MeV;
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lowEnergyLimit = 1.0*keV;
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} else if(ir49He == modelName) {
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eStopingPowerTable = new G4hICRU49He();
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highEnergyLimit = 10.0*MeV/4.0;
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lowEnergyLimit = 1.0*keV/4.0;
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/*
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} else if(qao == modelName) {
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eStopingPowerTable = new G4hQAOModel();
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highEnergyLimit = 2.0*MeV;
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lowEnergyLimit = 5.0*keV;
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*/
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} else {
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eStopingPowerTable = new G4hICRU49p();
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highEnergyLimit = 2.0*MeV;
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lowEnergyLimit = 1.0*keV;
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G4cout << "G4hParametrisedLossModel Warning: <" << modelName
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<< "> is unknown - default <"
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<< ir49p << ">" << " is used for Electronic Stopping"
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<< G4endl;
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modelName = ir49p;
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}
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/*
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G4cout << "G4hParametrisedLossModel: the model <"
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<< modelName << ">" << " is used for Electronic Stopping"
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<< G4endl;
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*/
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4hParametrisedLossModel::~G4hParametrisedLossModel()
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{
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delete eStopingPowerTable;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4hParametrisedLossModel::TheValue(const G4DynamicParticle* particle,
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const G4Material* material)
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{
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G4double scaledEnergy = (particle->GetKineticEnergy())
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* proton_mass_c2/(particle->GetMass());
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G4double factor = theZieglerFactor;
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if (scaledEnergy < lowEnergyLimit) {
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if (modelName != "QAO") factor *= std::sqrt(scaledEnergy/lowEnergyLimit);
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scaledEnergy = lowEnergyLimit;
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}
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G4double eloss = StoppingPower(material,scaledEnergy) * factor;
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return eloss;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4hParametrisedLossModel::TheValue(const G4ParticleDefinition* aParticle,
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const G4Material* material,
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G4double kineticEnergy)
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{
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G4double scaledEnergy = kineticEnergy
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* proton_mass_c2/(aParticle->GetPDGMass());
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G4double factor = theZieglerFactor;
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if (scaledEnergy < lowEnergyLimit) {
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if (modelName != "QAO") factor *= std::sqrt(scaledEnergy/lowEnergyLimit);
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scaledEnergy = lowEnergyLimit;
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}
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G4double eloss = StoppingPower(material,scaledEnergy) * factor;
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return eloss;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4hParametrisedLossModel::LowEnergyLimit(const G4ParticleDefinition* ,
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const G4Material*) const
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{
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return lowEnergyLimit;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4hParametrisedLossModel::HighEnergyLimit(const G4ParticleDefinition* ,
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const G4Material*) const
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{
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return highEnergyLimit;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4hParametrisedLossModel::LowEnergyLimit(const G4ParticleDefinition* ) const
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{
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return lowEnergyLimit;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4hParametrisedLossModel::HighEnergyLimit(const G4ParticleDefinition* ) const
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{
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return highEnergyLimit;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4bool G4hParametrisedLossModel::IsInCharge(const G4DynamicParticle* ,
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const G4Material*) const
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{
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return true;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4bool G4hParametrisedLossModel::IsInCharge(const G4ParticleDefinition* ,
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const G4Material*) const
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{
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return true;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4hParametrisedLossModel::StoppingPower(const G4Material* material,
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G4double kineticEnergy)
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{
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G4double eloss = 0.0;
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const G4int numberOfElements = material->GetNumberOfElements() ;
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const G4double* theAtomicNumDensityVector =
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material->GetAtomicNumDensityVector() ;
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// compound material with parametrisation
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if( (eStopingPowerTable->HasMaterial(material)) ) {
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eloss = eStopingPowerTable->StoppingPower(material, kineticEnergy);
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if ("QAO" != modelName) {
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eloss *= material->GetTotNbOfAtomsPerVolume();
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if(1 < numberOfElements) {
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G4int nAtoms = 0;
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const G4int* theAtomsVector = material->GetAtomsVector();
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for (G4int iel=0; iel<numberOfElements; iel++) {
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nAtoms += theAtomsVector[iel];
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}
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eloss /= nAtoms;
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}
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}
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// pure material
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} else if(1 == numberOfElements) {
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G4double z = material->GetZ();
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eloss = (eStopingPowerTable->ElectronicStoppingPower(z, kineticEnergy))
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* (material->GetTotNbOfAtomsPerVolume()) ;
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// Experimental data exist only for kinetic energy 125 keV
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} else if( MolecIsInZiegler1988(material)) {
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// Cycle over elements - calculation based on Bragg's rule
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G4double eloss125 = 0.0 ;
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const G4ElementVector* theElementVector =
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material->GetElementVector() ;
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// loop for the elements in the material
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for (G4int i=0; i<numberOfElements; i++) {
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const G4Element* element = (*theElementVector)[i] ;
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G4double z = element->GetZ() ;
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eloss +=(eStopingPowerTable->ElectronicStoppingPower(z,kineticEnergy))
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* theAtomicNumDensityVector[i] ;
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eloss125 +=(eStopingPowerTable->ElectronicStoppingPower(z,125.0*keV))
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* theAtomicNumDensityVector[i] ;
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}
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// Chemical factor is taken into account
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eloss *= ChemicalFactor(kineticEnergy, eloss125) ;
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// Brugg's rule calculation
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} else {
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const G4ElementVector* theElementVector =
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material->GetElementVector() ;
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// loop for the elements in the material
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for (G4int i=0; i<numberOfElements; i++)
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{
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const G4Element* element = (*theElementVector)[i] ;
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G4double z = element->GetZ() ;
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eloss += (eStopingPowerTable->ElectronicStoppingPower(z,kineticEnergy))
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* theAtomicNumDensityVector[i];
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}
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}
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return eloss;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4bool G4hParametrisedLossModel::MolecIsInZiegler1988(
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const G4Material* material)
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{
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// The list of molecules from
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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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G4String myFormula = G4String(" ") ;
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const G4String chFormula = material->GetChemicalFormula() ;
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if (myFormula == chFormula ) return false ;
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// There are no evidence for difference of stopping power depended on
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// phase of the compound except for water. The stopping power of the
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// water in gas phase can be predicted using Bragg's rule.
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//
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// No chemical factor for water-gas
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myFormula = G4String("H_2O") ;
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const G4State theState = material->GetState() ;
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if( theState == kStateGas && myFormula == chFormula) return false ;
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const size_t numberOfMolecula = 53 ;
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// The coffecient from Table.4 of Ziegler & Manoyan
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const G4double HeEff = 2.8735 ;
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static G4String name[numberOfMolecula] = {
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"H_2O", "C_2H_4O", "C_3H_6O", "C_2H_2", "C_H_3OH",
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"C_2H_5OH", "C_3H_7OH", "C_3H_4", "NH_3", "C_14H_10",
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"C_6H_6", "C_4H_10", "C_4H_6", "C_4H_8O", "CCl_4",
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"CF_4", "C_6H_8", "C_6H_12", "C_6H_10O", "C_6H_10",
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"C_8H_16", "C_5H_10", "C_5H_8", "C_3H_6-Cyclopropane","C_2H_4F_2",
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"C_2H_2F_2", "C_4H_8O_2", "C_2H_6", "C_2F_6", "C_2H_6O",
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"C_3H_6O", "C_4H_10O", "C_2H_4", "C_2H_4O", "C_2H_4S",
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"SH_2", "CH_4", "CCLF_3", "CCl_2F_2", "CHCl_2F",
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"(CH_3)_2S", "N_2O", "C_5H_10O", "C_8H_6", "(CH_2)_N",
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"(C_3H_6)_N","(C_8H_8)_N", "C_3H_8", "C_3H_6-Propylene", "C_3H_6O",
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"C_3H_6S", "C_4H_4S", "C_7H_8"
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} ;
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static G4double expStopping[numberOfMolecula] = {
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66.1, 190.4, 258.7, 42.2, 141.5,
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210.9, 279.6, 198.8, 31.0, 267.5,
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122.8, 311.4, 260.3, 328.9, 391.3,
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206.6, 374.0, 422.0, 432.0, 398.0,
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554.0, 353.0, 326.0, 74.6, 220.5,
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197.4, 362.0, 170.0, 330.5, 211.3,
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262.3, 349.6, 51.3, 187.0, 236.9,
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121.9, 35.8, 247.0, 292.6, 268.0,
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262.3, 49.0, 398.9, 444.0, 22.91,
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68.0, 155.0, 84.0, 74.2, 254.7,
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306.8, 324.4, 420.0
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} ;
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static G4double expCharge[numberOfMolecula] = {
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HeEff, HeEff, HeEff, 1.0, HeEff,
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HeEff, HeEff, HeEff, 1.0, 1.0,
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1.0, HeEff, HeEff, HeEff, HeEff,
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HeEff, HeEff, HeEff, HeEff, HeEff,
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HeEff, HeEff, HeEff, 1.0, HeEff,
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HeEff, HeEff, HeEff, HeEff, HeEff,
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HeEff, HeEff, 1.0, HeEff, HeEff,
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HeEff, 1.0, HeEff, HeEff, HeEff,
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HeEff, 1.0, HeEff, HeEff, 1.0,
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1.0, 1.0, 1.0, 1.0, HeEff,
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HeEff, HeEff, HeEff
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} ;
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static G4double numberOfAtomsPerMolecula[numberOfMolecula] = {
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3.0, 7.0, 10.0, 4.0, 6.0,
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9.0, 12.0, 7.0, 4.0, 24.0,
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12.0, 14.0, 10.0, 13.0, 5.0,
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5.0, 14.0, 18.0, 17.0, 17.0,
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24.0, 15.0, 13.0, 9.0, 8.0,
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6.0, 14.0, 8.0, 8.0, 9.0,
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10.0, 15.0, 6.0, 7.0, 7.0,
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3.0, 5.0, 5.0, 5.0, 5.0,
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9.0, 3.0, 16.0, 14.0, 3.0,
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9.0, 16.0, 11.0, 9.0, 10.0,
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10.0, 9.0, 15.0
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} ;
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// Search for the compaund in the table
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for (size_t i=0; i<numberOfMolecula; i++)
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{
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if(chFormula == name[i]) {
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G4double exp125 = expStopping[i] *
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(material->GetTotNbOfAtomsPerVolume()) /
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(expCharge[i] * numberOfAtomsPerMolecula[i]) ;
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SetExpStopPower125(exp125) ;
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return true ;
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}
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}
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return false ;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4hParametrisedLossModel::ChemicalFactor(
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G4double kineticEnergy, G4double eloss125) const
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{
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// Approximation of Chemical Factor according to
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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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G4double gamma = 1.0 + kineticEnergy/proton_mass_c2 ;
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G4double gamma25 = 1.0 + 25.0*keV /proton_mass_c2 ;
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G4double gamma125 = 1.0 + 125.0*keV/proton_mass_c2 ;
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G4double beta = std::sqrt(1.0 - 1.0/(gamma*gamma)) ;
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G4double beta25 = std::sqrt(1.0 - 1.0/(gamma25*gamma25)) ;
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G4double beta125 = std::sqrt(1.0 - 1.0/(gamma125*gamma125)) ;
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G4double factor = 1.0 + (expStopPower125/eloss125 - 1.0) *
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(1.0 + std::exp( 1.48 * ( beta125/beta25 - 7.0 ) ) ) /
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(1.0 + std::exp( 1.48 * ( beta/beta25 - 7.0 ) ) ) ;
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return factor ;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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