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geant4/source/processes/electromagnetic/lowenergy/src/G4hICRU49Nuclear.cc
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Gabriele Cosmo 216a75eeb1 Import Geant4 8.1.0 source tree
2016-06-09 14:44:26 +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. *
// ********************************************************************
//
//
// -------------------------------------------------------------------
//
// GEANT4 Class file
//
//
// File name: G4hICRU49Nuclear
//
// Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch)
//
// Creation date: 20 July 2000
//
// Modifications:
// 20/07/2000 V.Ivanchenko First implementation
// 10/05/2001 V.Ivanchenko Clean up againist Linux compilation with -Wall
//
// Class Description:
//
// Nuclear stopping power parametrised according to
// ICRU Report N49, 1993. Moliere model.
// G.Moliere "Theorie der Streuung schneller geladener Teilchen I;
// Einzelstreuungam abbgeschirmten Coulomb-Feld" Z. f. Naturforsch, A2,
// 133 (1947).
//
// Class Description: End
//
// -------------------------------------------------------------------
//
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
#include "G4hICRU49Nuclear.hh"
#include "G4UnitsTable.hh"
#include "globals.hh"
#include "Randomize.hh"
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
G4hICRU49Nuclear::G4hICRU49Nuclear():G4VhNuclearStoppingPower()
{;}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
G4hICRU49Nuclear::~G4hICRU49Nuclear()
{;}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
G4double G4hICRU49Nuclear::NuclearStoppingPower(G4double kineticEnergy,
G4double z1, G4double z2,
G4double m1, G4double m2) const
{
G4double energy = kineticEnergy/keV ; // energy in keV
G4double ionloss = 0.0;
G4double rm = (m1 + m2) * ( std::pow(z1, .23) + std::pow(z2, .23) ) ;
G4double er = 32.536 * m2 * energy / ( z1 * z2 * rm ) ; // reduced energy
static G4double a[104][2] = {
{ 1.0E+8, 5.831E-8},
{ 8.0E+7, 7.288E-8},
{ 6.0E+7, 9.719E-8},
{ 5.0E+7, 1.166E-7},
{ 4.0E+7, 1.457E-7},
{ 3.0E+7, 1.942E-7},
{ 2.0E+7, 2.916E-7},
{ 1.5E+7, 3.887E-7},
{ 1.0E+7, 5.833E-7},
{ 8.0E+6, 7.287E-7},
{ 6.0E+6, 9.712E-7},
{ 5.0E+6, 1.166E-6},
{ 4.0E+6, 1.457E-6},
{ 3.0E+6, 1.941E-6},
{ 2.0E+6, 2.911E-6},
{ 1.5E+6, 3.878E-6},
{ 1.0E+6, 5.810E-6},
{ 8.0E+5, 7.262E-6},
{ 6.0E+5, 9.663E-6},
{ 5.0E+5, 1.157E-5},
{ 4.0E+5, 1.442E-5},
{ 3.0E+5, 1.913E-5},
{ 2.0E+5, 2.845E-5},
{ 1.5E+5, 3.762E-5},
{ 1.0E+5, 5.554E-5},
{ 8.0E+4, 6.866E-5},
{ 6.0E+4, 9.020E-5},
{ 5.0E+4, 1.070E-4},
{ 4.0E+4, 1.319E-4},
{ 3.0E+4, 1.722E-4},
{ 2.0E+4, 2.499E-4},
{ 1.5E+4, 3.248E-4},
{ 1.0E+4, 4.688E-4},
{ 8.0E+3, 5.729E-4},
{ 6.0E+3, 7.411E-4},
{ 5.0E+3, 8.718E-4},
{ 4.0E+3, 1.063E-3},
{ 3.0E+3, 1.370E-3},
{ 2.0E+3, 1.955E-3},
{ 1.5E+3, 2.511E-3},
{ 1.0E+3, 3.563E-3},
{ 8.0E+2, 4.314E-3},
{ 6.0E+2, 5.511E-3},
{ 5.0E+2, 6.430E-3},
{ 4.0E+2, 7.756E-3},
{ 3.0E+2, 9.855E-3},
{ 2.0E+2, 1.375E-2},
{ 1.5E+2, 1.736E-2},
{ 1.0E+2, 2.395E-2},
{ 8.0E+1, 2.850E-2},
{ 6.0E+1, 3.552E-2},
{ 5.0E+1, 4.073E-2},
{ 4.0E+1, 4.802E-2},
{ 3.0E+1, 5.904E-2},
{ 1.5E+1, 9.426E-2},
{ 1.0E+1, 1.210E-1},
{ 8.0E+0, 1.377E-1},
{ 6.0E+0, 1.611E-1},
{ 5.0E+0, 1.768E-1},
{ 4.0E+0, 1.968E-1},
{ 3.0E+0, 2.235E-1},
{ 2.0E+0, 2.613E-1},
{ 1.5E+0, 2.871E-1},
{ 1.0E+0, 3.199E-1},
{ 8.0E-1, 3.354E-1},
{ 6.0E-1, 3.523E-1},
{ 5.0E-1, 3.609E-1},
{ 4.0E-1, 3.693E-1},
{ 3.0E-1, 3.766E-1},
{ 2.0E-1, 3.803E-1},
{ 1.5E-1, 3.788E-1},
{ 1.0E-1, 3.711E-1},
{ 8.0E-2, 3.644E-1},
{ 6.0E-2, 3.530E-1},
{ 5.0E-2, 3.444E-1},
{ 4.0E-2, 3.323E-1},
{ 3.0E-2, 3.144E-1},
{ 2.0E-2, 2.854E-1},
{ 1.5E-2, 2.629E-1},
{ 1.0E-2, 2.298E-1},
{ 8.0E-3, 2.115E-1},
{ 6.0E-3, 1.883E-1},
{ 5.0E-3, 1.741E-1},
{ 4.0E-3, 1.574E-1},
{ 3.0E-3, 1.372E-1},
{ 2.0E-3, 1.116E-1},
{ 1.5E-3, 9.559E-2},
{ 1.0E-3, 7.601E-2},
{ 8.0E-4, 6.668E-2},
{ 6.0E-4, 5.605E-2},
{ 5.0E-4, 5.008E-2},
{ 4.0E-4, 4.352E-2},
{ 3.0E-4, 3.617E-2},
{ 2.0E-4, 2.768E-2},
{ 1.5E-4, 2.279E-2},
{ 1.0E-4, 1.723E-2},
{ 8.0E-5, 1.473E-2},
{ 6.0E-5, 1.200E-2},
{ 5.0E-5, 1.052E-2},
{ 4.0E-5, 8.950E-3},
{ 3.0E-5, 7.246E-3},
{ 2.0E-5, 5.358E-3},
{ 1.5E-5, 4.313E-3},
{ 0.0, 3.166E-3}
};
for (G4int i=1; i<104; i++)
{
if (er > a[i][0]) {
ionloss =
(a[i][1]-a[i-1][1])*(er-a[i-1][0])/(a[i][0]-a[i-1][0])+a[i-1][1];
break;
}
}
// Stragling
if(lossFlucFlag) {
G4double sig = 4.0 * m1 * m2 / ((m1 + m2)*(m1 + m2)*
(4.0 + 0.197*std::pow(er,-1.6991)+6.584*std::pow(er,-1.0494))) ;
ionloss *= G4RandGauss::shoot(1.0,sig) ;
}
ionloss *= 8.462 * z1 * z2 * m1 / rm ; // Return to [ev/(10^15 atoms/cm^2]
if ( ionloss < 0.0) ionloss = 0.0 ;
return ionloss;
}
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