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source
processes
electromagnetic
highenergy
src
G4hBremsstrahlungModel.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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// $Id: G4hBremsstrahlungModel.cc 74020 2013-09-19 13:38:38Z gcosmo $
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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: G4hBremsstrahlungModel
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//
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// Author: Vladimir Ivanchenko on base of G4MuBremsstrahlungModel
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//
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// Creation date: 28.02.2008
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//
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// Modifications:
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//
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//
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// Class Description:
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//
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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 "
G4hBremsstrahlungModel.hh
"
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#include "
G4PhysicalConstants.hh
"
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#include "
G4SystemOfUnits.hh
"
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#include "
G4Log.hh
"
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using namespace
std;
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G4hBremsstrahlungModel::G4hBremsstrahlungModel
(
const
G4ParticleDefinition
*
p
,
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const
G4String
& nam)
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:
G4MuBremsstrahlungModel
(p, nam)
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{}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4hBremsstrahlungModel::~G4hBremsstrahlungModel
()
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{}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double
G4hBremsstrahlungModel::ComputeDMicroscopicCrossSection
(
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G4double
tkin,
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G4double
Z
,
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G4double
gammaEnergy)
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// differential cross section
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{
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G4double
dxsection = 0.;
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if
( gammaEnergy > tkin)
return
dxsection ;
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// G4cout << "G4hBremsstrahlungModel m= " << mass
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// << " " << particle->GetParticleName() << G4endl;
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G4double
E
= tkin +
mass
;
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G4double
v = gammaEnergy/
E
;
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G4double
delta = 0.5*mass*mass*v/(E-gammaEnergy) ;
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G4double
rab0=delta*
sqrte
;
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G4int
iz =
G4int
(Z);
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if
(iz < 1) { iz = 1; }
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G4double
z13 = 1.0/
nist
->
GetZ13
(iz);
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G4double
dn = mass*
nist
->
GetA27
(iz)/(70.*
MeV
);
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G4double
b =
btf
;
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if
(1 == iz) b =
bh
;
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// nucleus contribution logarithm
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G4double
rab1=b*z13;
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G4double
fn=
G4Log
(rab1/(dn*(
electron_mass_c2
+rab0*rab1))*
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(mass+delta*(dn*sqrte-2.))) ;
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if
(fn <0.) fn = 0. ;
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G4double
x
= 1.0 - v;
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if
(
particle
->
GetPDGSpin
() != 0) { x += 0.75*v*v; }
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dxsection =
coeff
*x*Z*Z*fn/gammaEnergy;
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return
dxsection;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
x
Float_t x
Definition:
compare.C:6
G4PhysicalConstants.hh
G4hBremsstrahlungModel.hh
G4hBremsstrahlungModel::~G4hBremsstrahlungModel
virtual ~G4hBremsstrahlungModel()
Definition:
G4hBremsstrahlungModel.cc:65
MeV
static constexpr double MeV
Definition:
G4SIunits.hh:214
p
const char * p
Definition:
xmltok.h:285
G4String
Definition:
examples/extended/parallel/TopC/ParN02/AnnotatedFiles/G4String.hh:45
G4hBremsstrahlungModel::G4hBremsstrahlungModel
G4hBremsstrahlungModel(const G4ParticleDefinition *p=nullptr, const G4String &nam="hBrem")
Definition:
G4hBremsstrahlungModel.cc:58
G4Log
G4double G4Log(G4double x)
Definition:
G4Log.hh:230
Z
Float_t Z
Definition:
advanced/microbeam/plot.C:38
G4MuBremsstrahlungModel
Definition:
G4MuBremsstrahlungModel.hh:72
G4ParticleDefinition::GetPDGSpin
G4double GetPDGSpin() const
Definition:
G4ParticleDefinition.hh:127
G4double
double G4double
Definition:
G4Types.hh:76
G4MuBremsstrahlungModel::nist
G4NistManager * nist
Definition:
G4MuBremsstrahlungModel.hh:139
G4MuBremsstrahlungModel::particle
const G4ParticleDefinition * particle
Definition:
G4MuBremsstrahlungModel.hh:138
E
Float_t E
Definition:
extended/medical/dna/mfp/plot.C:20
CLHEP::electron_mass_c2
static constexpr double electron_mass_c2
Definition:
PhysicalConstants.h:79
G4SystemOfUnits.hh
G4ParticleDefinition
Definition:
G4ParticleDefinition.hh:73
G4MuBremsstrahlungModel::sqrte
G4double sqrte
Definition:
G4MuBremsstrahlungModel.hh:144
G4MuBremsstrahlungModel::btf
G4double btf
Definition:
G4MuBremsstrahlungModel.hh:147
G4hBremsstrahlungModel::ComputeDMicroscopicCrossSection
virtual G4double ComputeDMicroscopicCrossSection(G4double tkin, G4double Z, G4double gammaEnergy) override
Definition:
G4hBremsstrahlungModel.cc:70
G4int
int G4int
Definition:
G4Types.hh:78
G4NistManager::GetA27
G4double GetA27(G4int Z) const
Definition:
G4NistManager.hh:590
G4Log.hh
G4MuBremsstrahlungModel::coeff
G4double coeff
Definition:
G4MuBremsstrahlungModel.hh:143
G4NistManager::GetZ13
G4double GetZ13(G4double Z) const
Definition:
G4NistManager.hh:576
G4MuBremsstrahlungModel::bh
G4double bh
Definition:
G4MuBremsstrahlungModel.hh:145
G4MuBremsstrahlungModel::mass
G4double mass
Definition:
G4MuBremsstrahlungModel.hh:140
다음에 의해 생성됨 :
1.8.5