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geant4/source/processes/electromagnetic/utils/include/G4EmCorrections.hh
T
Gabriele Cosmo fe73f43734 Import Geant4 8.2.0 source tree
2016-06-09 14:55:03 +02:00

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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
// * LICENSE and available at http://cern.ch/geant4/license . These *
// * include a list of copyright holders. *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
// $Id: G4EmCorrections.hh,v 1.8 2006/06/29 19:54:23 gunter Exp $
// GEANT4 tag $Name: geant4-08-02 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name: G4EmCorrections
//
// Author: Vladimir Ivanchenko
//
// Creation date: 13.01.2005
//
// Modifications:
// 28.04.2006 General cleanup, add finite size corrections (V.Ivanchenko)
// 13.05.2006 Add corrections for ion stopping (V.Ivanhcenko)
//
// Class Description:
//
// This class provides calculation of EM corrections to ionisation
//
// -------------------------------------------------------------------
//
#ifndef G4EmCorrections_h
#define G4EmCorrections_h 1
#include "globals.hh"
#include "G4AtomicShells.hh"
#include "G4ionEffectiveCharge.hh"
#include "G4Material.hh"
#include "G4ParticleDefinition.hh"
class G4NistManager;
class G4VEmModel;
class G4PhysicsVector;
class G4EmCorrections
{
public:
G4EmCorrections();
virtual ~G4EmCorrections();
G4double HighOrderCorrections(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double Bethe(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double SpinCorrection(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double KShellCorrection(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double LShellCorrection(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double ShellCorrection(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double ShellCorrectionSTD(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double DensityCorrection(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double BarkasCorrection(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double BlochCorrection(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double MottCorrection(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double FiniteSizeCorrection(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double NuclearDEDX(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy,
G4bool fluct = true);
void AddStoppingData(G4int Z, G4int A, const G4String& materialName,
G4PhysicsVector& dVector);
G4double EffectiveChargeCorrection(const G4ParticleDefinition*,
const G4Material*,
G4double);
G4ionEffectiveCharge* GetIonEffectiveCharge(G4VEmModel* m = 0);
G4int GetNumberOfStoppingVectors();
private:
void Initialise();
G4PhysicsVector* InitialiseMaterial(const G4Material* mat);
void SetupKinematics(const G4ParticleDefinition* p,
const G4Material* material,
G4double kineticEnergy);
G4double KShell(G4double theta, G4double eta);
G4double LShell(G4double theta, G4double eta);
G4int Index(G4double x, G4double* y, G4int n);
G4double Value(G4double xv, G4double x1, G4double x2, G4double y1, G4double y2);
G4double Value2(G4double xv, G4double yv, G4double x1, G4double x2,
G4double y1, G4double y2,
G4double z11, G4double z21, G4double z12, G4double z22);
G4double NuclearStoppingPower(G4double e, G4double z1, G4double z2,
G4double m1, G4double m2);
// hide assignment operator
G4EmCorrections & operator=(const G4EmCorrections &right);
G4EmCorrections(const G4EmCorrections&);
G4double engBarkas[47];
G4double corBarkas[47];
G4double ed[104];
G4double a[104];
G4double theZieglerFactor;
G4double alpha2;
G4bool lossFlucFlag;
G4int verbose;
G4int nK;
G4int nL;
G4int nEtaK;
G4int nEtaL;
G4double COSEB[14];
G4double COSXI[14];
G4double ZD[11];
G4double TheK[20];
G4double SK[20];
G4double TK[20];
G4double UK[20];
G4double VK[20];
G4double ZK[20];
G4double TheL[26];
G4double SL[26];
G4double TL[26];
G4double UL[26];
G4double VL[26];
G4double Eta[29];
G4double CK[20][29];
G4double CL[26][28];
G4double HM[53];
G4double HN[31];
G4double MSH[93];
G4double TAU[93];
const G4ParticleDefinition* particle;
const G4ParticleDefinition* curParticle;
const G4Material* material;
const G4Material* curMaterial;
const G4ElementVector* theElementVector;
const G4double* atomDensity;
G4int numberOfElements;
G4double kinEnergy;
G4double mass;
G4double massFactor;
G4double tau;
G4double gamma;
G4double bg2;
G4double beta2;
G4double beta;
G4double ba2;
G4double tmax;
G4double tmax0;
G4double charge;
G4double q2;
G4AtomicShells shells;
G4ionEffectiveCharge effCharge;
G4NistManager* nist;
G4VEmModel* ionModel;
// Ion stopping data
G4int nIons;
G4int idx;
std::vector<G4int> Zion;
std::vector<G4int> Aion;
std::vector<G4String> materialName;
std::vector<const G4Material*> materialList;
std::vector<G4PhysicsVector*> stopData;
G4PhysicsVector* curVector;
};
inline G4int G4EmCorrections::Index(G4double x, G4double* y, G4int n)
{
G4int iddd = n-1;
do {iddd--;} while (iddd>0 && x<y[iddd]);
return iddd;
}
inline G4double G4EmCorrections::Value(G4double xv, G4double x1, G4double x2,
G4double y1, G4double y2)
{
return y1 + (y2 - y1)*(xv - x1)/(x2 - x1);
}
inline G4double G4EmCorrections::Value2(G4double xv, G4double yv,
G4double x1, G4double x2,
G4double y1, G4double y2,
G4double z11, G4double z21,
G4double z12, G4double z22)
{
return (z11*(x2-xv)*(y2-yv) + z22*(xv-x1)*(yv-y1) +
0.5*(z12*((x2-xv)*(yv-y1)+(xv-x1)*(y2-yv))+
z21*((xv-x1)*(y2-yv)+(yv-y1)*(x2-xv))))
/ ((x2-x1)*(y2-y1));
}
inline void G4EmCorrections::SetupKinematics(const G4ParticleDefinition* p,
const G4Material* mat,
G4double kineticEnergy)
{
if(kineticEnergy != kinEnergy || p != particle) {
particle = p;
kinEnergy = kineticEnergy;
mass = p->GetPDGMass();
tau = kineticEnergy / mass;
gamma = 1.0 + tau;
bg2 = tau * (tau+2.0);
beta2 = bg2/(gamma*gamma);
beta = std::sqrt(beta2);
ba2 = beta2/alpha2;
G4double ratio = electron_mass_c2/mass;
tmax = 2.0*electron_mass_c2*bg2 /(1. + 2.0*gamma*ratio + ratio*ratio);
tmax0 = tmax;
charge = p->GetPDGCharge()/eplus;
if(charge < 1.5) q2 = charge*charge;
else {
q2 = effCharge.EffectiveChargeSquareRatio(p,mat,kinEnergy);
charge = std::sqrt(q2);
}
if(mass > 120.*MeV)
tmax = std::min(tmax,51200.*electron_mass_c2*std::pow(proton_mass_c2/mass,0.666667));
}
if(mat != material) {
material = mat;
theElementVector = material->GetElementVector();
atomDensity = material->GetAtomicNumDensityVector();
numberOfElements = material->GetNumberOfElements();
}
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
#endif
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