Gabriele Cosmo
88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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// $Id: G4PiData.cc,v 1.5 2002/12/13 09:12:23 gcosmo Exp $
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// GEANT4 tag $Name: geant4-05-01 $
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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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G4PiData::
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G4PiData(const G4double * aT, const G4double * aIn, 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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G4std::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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G4std::pair<G4double, G4std::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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G4bool G4PiData::
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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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G4double G4PiData::
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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++;}
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if(it==end()) G4Exception("G4PiData used outside validity range");
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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 = G4std::max(0., x1 + (kineticEnergy-e1)*(x2-x1)/(e2-e1));
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return result;
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}
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G4double G4PiData::
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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++;}
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if(it==end()) G4Exception("G4PiData used outside validity range");
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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 = G4std::max(0., x1 + (kineticEnergy-e1)*(x2-x1)/(e2-e1));
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return result;
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}
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