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G4ElectroNuclearCrossSection.hh
Go to the documentation of this file.
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the newest version in sPHENIX GitHub for file G4ElectroNuclearCrossSection.hh
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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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// GEANT4 physics class: G4ElectroNuclearCrossSection -- header file
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// M.V. Kossov, ITEP(Moscow), 24-OCT-01
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// The last update: M.V. Kossov, CERN/ITEP (Moscow) 25-Sept-03
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// A. Dotti 2-May-2013: Re-write caching logic and optimizations
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#ifndef G4ElectroNuclearCrossSection_h
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#define G4ElectroNuclearCrossSection_h 1
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#include "
G4VCrossSectionDataSet.hh
"
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#include "
G4DynamicParticle.hh
"
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#include "
G4Element.hh
"
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#include "
G4ParticleTable.hh
"
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#include "
G4NucleiProperties.hh
"
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#include "
G4NistManager.hh
"
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#include <vector>
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#include "
Randomize.hh
"
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#include "
G4Electron.hh
"
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#include "
G4Positron.hh
"
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#include <map>
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//A cache element
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struct
cacheEl_t
{
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G4int
F
;
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G4double
*
J1
;
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G4double
*
J2
;
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G4double
*
J3
;
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G4double
H
;
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G4double
TH
;
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};
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class
G4ElectroNuclearCrossSection
:
public
G4VCrossSectionDataSet
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{
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public
:
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G4ElectroNuclearCrossSection
();
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virtual
~G4ElectroNuclearCrossSection
();
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static
const
char
*
Default_Name
() {
return
"ElectroNuclearXS"
;}
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virtual
void
CrossSectionDescription
(std::ostream&)
const
;
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virtual
G4bool
IsElementApplicable
(
const
G4DynamicParticle
*,
G4int
Z
,
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const
G4Material
*);
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virtual
G4double
GetElementCrossSection
(
const
G4DynamicParticle
*,
G4int
Z
,
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const
G4Material
*
mat
);
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G4double
GetEquivalentPhotonEnergy
();
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G4double
GetVirtualFactor
(
G4double
nu,
G4double
Q2);
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G4double
GetEquivalentPhotonQ2
(
G4double
nu);
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private
:
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G4int
GetFunctions
(
G4double
a
,
G4double
*
x
,
G4double
*
y
,
G4double
*
z
);
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G4double
ThresholdEnergy
(
G4int
Z
,
G4int
N
);
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G4double
SolveTheEquation
(
G4double
f
);
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G4double
Fun
(
G4double
x
);
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G4double
DFun
(
G4double
x
);
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G4double
HighEnergyJ1
(
G4double
lE);
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G4double
HighEnergyJ2
(
G4double
lE,
G4double
E
);
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G4double
HighEnergyJ3
(
G4double
lE,
G4double
E2);
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// Body
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private
:
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G4int
currentN
;
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G4int
currentZ
;
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//Cache structure
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G4int
lastZ
;
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std::vector<cacheEl_t*>
cache
;
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cacheEl_t
*
lastUsedCacheEl
;
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G4NistManager
*
nistmngr
;
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//Cache values for XS
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G4double
lastE
;
//Last used energy value
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G4double
lastSig
;
//Last used XS value
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G4double
lastG
;
//Last value of gamma=lnE-ln(me)
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G4int
lastL
;
//Last used in the cross section TheLastBin
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const
G4double
mNeut
;
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const
G4double
mProt
;
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};
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#endif
geant4
tree
geant4-10.6-release
source
processes
hadronic
cross_sections
include
G4ElectroNuclearCrossSection.hh
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:36
using
1.8.2 with
ECCE GitHub integration