G4hICRU49Nuclear Class Reference

#include <G4hICRU49Nuclear.hh>

Inheritance diagram for G4hICRU49Nuclear:

Collaboration diagram for G4hICRU49Nuclear:

Public Member Functions
	G4hICRU49Nuclear ()
	~G4hICRU49Nuclear ()
G4double	NuclearStoppingPower (G4double kineticEnergy, G4double z1, G4double z2, G4double m1, G4double m2) const
Public Member Functions inherited from G4VhNuclearStoppingPower
	G4VhNuclearStoppingPower ()
virtual	~G4VhNuclearStoppingPower ()
void	SetNuclearStoppingFluctuationsOn ()
void	SetNuclearStoppingFluctuationsOff ()

Additional Inherited Members
Protected Attributes inherited from G4VhNuclearStoppingPower
G4bool	lossFlucFlag

Detailed Description

Definition at line 57 of file G4hICRU49Nuclear.hh.

Constructor & Destructor Documentation

G4hICRU49Nuclear::G4hICRU49Nuclear

(

)

Definition at line 65 of file G4hICRU49Nuclear.cc.

                                  :G4VhNuclearStoppingPower()
{;}

G4hICRU49Nuclear::~G4hICRU49Nuclear

(

)

Definition at line 70 of file G4hICRU49Nuclear.cc.

{;}

Member Function Documentation

G4double G4hICRU49Nuclear::NuclearStoppingPower ( G4double  kineticEnergy, G4double  z1, G4double  z2, G4double  m1, G4double  m2  ) const

virtual

Implements G4VhNuclearStoppingPower.

Definition at line 75 of file G4hICRU49Nuclear.cc.

{  
  G4double energy = kineticEnergy/keV ;  // energy in keV
  G4double ionloss = 0.0;
  
  G4double rm = (m1 + m2Local) * ( std::pow(z1, .23) + std::pow(z2, .23) ) ;

  G4double er = 32.536 * m2Local * energy / ( z1 * z2 * rm ) ;  // reduced energy

  static const 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 * m2Local / ((m1 + m2Local)*(m1 + m2Local)*
                  (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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The documentation for this class was generated from the following files:

• source/geant4.10.03.p02/source/processes/electromagnetic/lowenergy/include/G4hICRU49Nuclear.hh
• source/geant4.10.03.p02/source/processes/electromagnetic/lowenergy/src/G4hICRU49Nuclear.cc