118 lines
4.3 KiB
C++
118 lines
4.3 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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// History:
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// -----------
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// 10 Nov 2021 S. Guatelli & S. Bakr, Wollongong University - 1st implementation
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//
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// Class description
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// ----------------
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// Computation of K, L & M shell ECPSSR ionisation cross sections for protons and alphas
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// Based on the work of
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// - S. Bakr et al. (2021) NIM B, 507:11-19.
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// - S. Bakr et al (2018), NIMB B, 436: 285-291.
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// ---------------------------------------------------------------------------------------
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#include <fstream>
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#include <iomanip>
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#include "G4ANSTOecpssrKxsModel.hh"
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#include "globals.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4ios.hh"
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#include "G4EMDataSet.hh"
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#include "G4LogLogInterpolation.hh"
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#include "G4Proton.hh"
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#include "G4Alpha.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4ANSTOecpssrKxsModel::G4ANSTOecpssrKxsModel()
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{
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G4cout << "Using ANSTO K Cross Sections! "<< G4endl;
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interpolation = new G4LogLogInterpolation();
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for (G4int i=6; i<93; i++)
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{
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protonDataSetMap[i] = new G4EMDataSet(i,interpolation);
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protonDataSetMap[i]->LoadData("pixe_ANSTO/proton/k-");
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}
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for (G4int i=6; i<93; i++)
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{
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alphaDataSetMap[i] = new G4EMDataSet(i,interpolation);
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alphaDataSetMap[i]->LoadData("pixe_ANSTO/alpha/k-");
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4ANSTOecpssrKxsModel::~G4ANSTOecpssrKxsModel()
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{
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protonDataSetMap.clear();
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alphaDataSetMap.clear();
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delete interpolation;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double G4ANSTOecpssrKxsModel::CalculateCrossSection(G4int zTarget,G4double massIncident, G4double energyIncident)
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{
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G4Proton* aProton = G4Proton::Proton();
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G4Alpha* aAlpha = G4Alpha::Alpha();
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G4double sigma = 0;
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if (massIncident == aProton->GetPDGMass())
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{
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if (energyIncident > 0.2*MeV && energyIncident < 5.*MeV && zTarget < 93 && zTarget > 5) {
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sigma = protonDataSetMap[zTarget]->FindValue(energyIncident/MeV);
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if (sigma !=0 && energyIncident > protonDataSetMap[zTarget]->GetEnergies(0).back()*MeV) return 0.;
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}
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}
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else if (massIncident == aAlpha->GetPDGMass())
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{
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if (energyIncident > 0.2*MeV && energyIncident < 40.*MeV && zTarget < 93 && zTarget > 5) {
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sigma = alphaDataSetMap[zTarget]->FindValue(energyIncident/MeV);
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if (sigma !=0 && energyIncident > alphaDataSetMap[zTarget]->GetEnergies(0).back()*MeV) return 0.;
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}
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}
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else
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{
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sigma = 0.;
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}
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// sigma is in internal units: it has been converted from
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// the input file in barns bt the EmDataset
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return sigma;
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}
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