Gabriele Cosmo
127 lines
4.5 KiB
C++
127 lines
4.5 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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// by J.P Wellisch, Sun Sep 15 2002.
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#include "G4PiData.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4HadronicException.hh"
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///////////////////////////////////////////////////////////////////////
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G4PiData::G4PiData(const G4double * aT, const G4double * aIn,
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const G4double * anE, G4int nP)
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{
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G4int i=0;
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for( i = 0; i < nP; i++ )
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{
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std::pair<G4double, G4double> x;
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x.first=aT[i]*millibarn;
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x.second=aIn[i]*millibarn;
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std::pair<G4double, std::pair<G4double, G4double > > aP;
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aP.first=anE[i]*GeV;
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aP.second=x;
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push_back(aP);
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}
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}
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////////////////////////////////////////////////////////////////////////
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G4bool G4PiData::AppliesTo(G4double kineticEnergy)
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{
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G4bool result = true;
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if(kineticEnergy>back().first) result = false;
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return result;
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}
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//////////////////////////////////////////////////////////////////////////
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G4double G4PiData::ReactionXSection(G4double kineticEnergy)
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{
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G4double result = 0;
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G4PiData::iterator it=begin();
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while(it!=end()&&kineticEnergy>(*it).first) {it++;} /* Loop checking, 08.01.2016, W. Pokorski */
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if(it==end())
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{
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throw G4HadronicException(__FILE__, __LINE__,
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"G4PiData::ReactionXSection: used outside validity range");
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}
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if(it==begin()) it++;
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G4double x1,x2,e1,e2;
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e1=(*(it-1)).first;
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x1=(*(it-1)).second.second;
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e2=(*(it)).first;
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x2=(*(it)).second.second;
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result = std::max(0., x1 + (kineticEnergy-e1)*(x2-x1)/(e2-e1));
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return result;
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}
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////////////////////////////////////////////////////////////////////////////
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G4double G4PiData::ElasticXSection(G4double kineticEnergy)
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{
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G4double result = 0;
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G4PiData::iterator it=begin();
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while(it!=end()&&kineticEnergy>(*it).first) {it++;} /* Loop checking, 08.01.2016, W. Pokorski */
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if(it==end())
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{
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throw G4HadronicException(__FILE__, __LINE__,
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"G4PiData::ElasticXSection: used outside validity range");
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}
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if(it==begin()) it++;
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G4double x1,x2,e1,e2;
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e1=(*(it-1)).first;
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x1=(*(it-1)).second.first - (*(it-1)).second.second;
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e2=(*(it)).first;
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x2=(*(it)).second.first - (*(it)).second.second;
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result = std::max(0., x1 + (kineticEnergy-e1)*(x2-x1)/(e2-e1));
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return result;
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}
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////////////////////////////////////////////////////////////////////////////
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G4double G4PiData::TotalXSection(G4double kineticEnergy)
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{
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G4double result = 0;
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G4PiData::iterator it=begin();
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while(it!=end()&&kineticEnergy>(*it).first) {it++;} /* Loop checking, 08.01.2016, W. Pokorski */
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if(it==end())
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{
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throw G4HadronicException(__FILE__, __LINE__,
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"G4PiData::TotalXSection: used outside validity range");
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}
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if(it==begin()) it++;
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G4double x1,x2,e1,e2;
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e1=(*(it-1)).first;
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x1=(*(it-1)).second.first;
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e2=(*(it)).first;
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x2=(*(it)).second.first;
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result = std::max(0., x1 + (kineticEnergy-e1)*(x2-x1)/(e2-e1));
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return result;
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}
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