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G4IonsSihverCrossSection.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4IonsSihverCrossSection.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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// 18-Sep-2003 First version is written by T. Koi
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// 23-Dec-2006 Isotope dependence added by D. Wright
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// 14-Mar-2011 Moved constructor, destructor and virtual methods to source by V.Ivanchenko
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// 19-Aug-2011 V.Ivanchenko move to new design and make x-section per element
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//
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#include "
G4IonsSihverCrossSection.hh
"
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#include "
G4PhysicalConstants.hh
"
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#include "
G4SystemOfUnits.hh
"
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#include "
G4DynamicParticle.hh
"
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#include "
G4HadTmpUtil.hh
"
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#include "
G4NistManager.hh
"
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#include "
G4Pow.hh
"
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G4IonsSihverCrossSection::G4IonsSihverCrossSection
()
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:
G4VCrossSectionDataSet
(
"IonsSihver"
), square_r0 ( (1.36*
fermi
) * (1.36*
fermi
) )
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{}
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G4IonsSihverCrossSection::~G4IonsSihverCrossSection
()
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{}
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void
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G4IonsSihverCrossSection::CrossSectionDescription
(std::ostream& outFile)
const
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{
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outFile <<
"G4IonsSihverCrossSection calculates the total reaction cross\n"
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<<
"section for nucleus-nucleus scattering using the Sihver\n"
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<<
"parameterization. It is valid for projectiles and targets of\n"
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<<
"all Z, and for all projectile energies above 100 MeV/n.\n"
;
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}
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G4bool
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G4IonsSihverCrossSection::IsElementApplicable
(
const
G4DynamicParticle
* aDP,
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G4int
,
const
G4Material
*)
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{
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G4int
BaryonNumber = aDP->
GetDefinition
()->
GetBaryonNumber
();
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G4double
KineticEnergy = aDP->
GetKineticEnergy
();
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if
( KineticEnergy / BaryonNumber >= 100*
MeV
&& BaryonNumber > 1 ) {
return
true
; }
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return
false
;
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}
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G4double
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G4IonsSihverCrossSection::GetElementCrossSection
(
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const
G4DynamicParticle
* aParticle,
G4int
Z
,
const
G4Material
*)
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{
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G4double
xsection = 0.0;
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G4int
At =
G4lrint
(
G4NistManager::Instance
()->GetAtomicMassAmu(Z));
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G4int
Ap = aParticle->
GetDefinition
()->
GetBaryonNumber
();
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G4Pow
* g4pow =
G4Pow::GetInstance
();
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G4double
cubicrAt = g4pow->
Z13
(At);
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G4double
cubicrAp = g4pow->
Z13
(Ap);
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G4double
b0 = 1.581 - 0.876 * (1.0/cubicrAp + 1.0/cubicrAt);
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G4double
xr = cubicrAp + cubicrAt - b0 * (1.0/cubicrAp + 1.0/cubicrAt);
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xsection =
pi
*
square_r0
* xr * xr;
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return
xsection;
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}
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geant4
tree
geant4-10.6-release
source
processes
hadronic
cross_sections
src
G4IonsSihverCrossSection.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:37
using
1.8.2 with
ECCE GitHub integration