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G4hNuclearStoppingModel.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4hNuclearStoppingModel.cc
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//
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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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//
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// GEANT4 Class file
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//
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//
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// File name: G4hNuclearStoppingModel
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//
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// Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch)
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//
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// Creation date: 20 July 2000
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//
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// Modifications:
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// 20/07/2000 V.Ivanchenko First implementation
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// 22/08/2000 V.Ivanchenko Bug fixed in call of a model
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// 03/10/2000 V.Ivanchenko CodeWizard clean up
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//
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// Class Description:
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//
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// Low energy protons/ions nuclear stopping parametrisation
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//
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// Class Description: End
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//
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// -------------------------------------------------------------------
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#include "
G4hNuclearStoppingModel.hh
"
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#include "
globals.hh
"
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#include "
G4PhysicalConstants.hh
"
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#include "
G4SystemOfUnits.hh
"
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#include "
G4UnitsTable.hh
"
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#include "
G4hZiegler1985Nuclear.hh
"
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#include "
G4hICRU49Nuclear.hh
"
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#include "
G4DynamicParticle.hh
"
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#include "
G4ParticleDefinition.hh
"
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#include "
G4ElementVector.hh
"
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#include "
G4Material.hh
"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4hNuclearStoppingModel::G4hNuclearStoppingModel
(
const
G4String
&
name
)
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:
G4VLowEnergyModel
(name), modelName(name)
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{
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InitializeMe
() ;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void
G4hNuclearStoppingModel::InitializeMe
()
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{
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// Constants
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highEnergyLimit
= 100.*
MeV
;
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lowEnergyLimit
= 1.*
eV
;
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factorPDG2AMU
= 1.007276/
proton_mass_c2
;
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theZieglerFactor
=
eV
*
cm2
*1.0e-15 ;
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// Registration of parametrisation models of nuclear energy losses
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G4String
blank =
G4String
(
" "
) ;
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G4String
ir49 =
G4String
(
"ICRU_R49"
) ;
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G4String
zi85 =
G4String
(
"Ziegler1985"
) ;
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if
(ir49 ==
modelName
|| blank ==
modelName
) {
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nStopingPowerTable
=
new
G4hICRU49Nuclear
();
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}
else
if
(zi85 ==
modelName
) {
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nStopingPowerTable
=
new
G4hZiegler1985Nuclear
();
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}
else
{
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G4cout
<<
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"G4hLowEnergyIonisation warning: There is no table with the modelName <"
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<<
modelName
<<
">"
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<<
" for nuclear stopping, <ICRU_R49> is applied "
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<<
G4endl
;
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nStopingPowerTable
=
new
G4hICRU49Nuclear
();
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}
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// Default is nuclear stopping fluctuations On
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// nStopingPowerTable->SetNuclearStoppingFluctuationsOn();
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nStopingPowerTable
->
SetNuclearStoppingFluctuationsOff
();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4hNuclearStoppingModel::~G4hNuclearStoppingModel
()
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{
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delete
nStopingPowerTable
;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double
G4hNuclearStoppingModel::TheValue
(
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const
G4DynamicParticle
*
particle
,
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const
G4Material
*
material
)
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{
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// Projectile nucleus
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G4double
energy
= particle->
GetKineticEnergy
() ;
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G4double
z1
=
std::abs
((particle->
GetCharge
())/
eplus
) ;
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G4double
m1 = (particle->
GetMass
())*
factorPDG2AMU
;
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G4double
nloss =
StoppingPower
(material, energy, z1, m1) *
theZieglerFactor
;
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return
nloss;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double
G4hNuclearStoppingModel::TheValue
(
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const
G4ParticleDefinition
* aParticle,
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const
G4Material
*
material
,
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G4double
kineticEnergy)
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{
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// Projectile nucleus
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G4double
z1
=
std::abs
((aParticle->
GetPDGCharge
())/
eplus
) ;
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G4double
m1 = (aParticle->
GetPDGMass
())*
factorPDG2AMU
;
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G4double
nloss =
StoppingPower
(material, kineticEnergy, z1, m1)
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*
theZieglerFactor
;
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return
nloss;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double
G4hNuclearStoppingModel::StoppingPower
(
152
const
G4Material
*
material
,
153
G4double
kineticEnergy,
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G4double
z1
,
G4double
m1)
const
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{
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// Target nucleus
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G4int
NumberOfElements = material->
GetNumberOfElements
() ;
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if
(0 == NumberOfElements)
return
0.0 ;
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const
G4ElementVector
* theElementVector =
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material->
GetElementVector
() ;
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const
G4double
* theAtomicNumDensityVector =
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material->
GetAtomicNumDensityVector
() ;
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// loop for the elements in the material
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G4double
nloss = 0.0;
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for
(
G4int
iel=0; iel<NumberOfElements; iel++) {
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const
G4Element
* element = (*theElementVector)[iel] ;
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G4double
z2
= element->
GetZ
();
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G4double
m2Local = element->
GetA
()*
mole
/
g
;
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nloss += (
nStopingPowerTable
->
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NuclearStoppingPower(kineticEnergy, z1, z2, m1, m2Local))
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* theAtomicNumDensityVector[iel] ;
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}
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return
nloss;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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geant4
tree
geant4-10.6-release
source
processes
electromagnetic
lowenergy
src
G4hNuclearStoppingModel.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:32
using
1.8.2 with
ECCE GitHub integration