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G4XAqmElastic.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4XAqmElastic.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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// GEANT4 Class file
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//
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// For information related to this code contact:
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//
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// File name: G4XAqmElastic
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//
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// Author:
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//
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// Creation date: 15 April 1999
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//
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// Modifications:
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//
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// Additive Quark Model Elastic cross section
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// (H.J. Lipkin and F. Scheck, Phys.Rev. 16 (1966) 71
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//
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// -------------------------------------------------------------------
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#include "
globals.hh
"
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#include "
G4ios.hh
"
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#include "
G4Pow.hh
"
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#include "
G4XAqmElastic.hh
"
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#include "
G4XAqmTotal.hh
"
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#include "
G4KineticTrack.hh
"
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// Validity range of this cross-section
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const
G4double
G4XAqmElastic::_lowLimit
= 0.;
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const
G4double
G4XAqmElastic::_highLimit
=
DBL_MAX
;
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G4XAqmElastic::G4XAqmElastic
()
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{
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// As a first approximation the model is assumed to be valid over
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// the entire energy range
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}
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G4XAqmElastic::~G4XAqmElastic
()
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{ }
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G4bool
G4XAqmElastic::operator==
(
const
G4XAqmElastic
&
right
)
const
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{
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return
(
this
== (
G4XAqmElastic
*) &right);
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}
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G4bool
G4XAqmElastic::operator!=
(
const
G4XAqmElastic
&
right
)
const
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{
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return
(
this
!= (
G4XAqmElastic
*) &right);
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}
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G4double
G4XAqmElastic::CrossSection
(
const
G4KineticTrack
& trk1,
const
G4KineticTrack
& trk2)
const
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{
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G4double
sigma = 0.;
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// Reference to be checked!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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static
const
G4double
coeff = 0.39;
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static
const
G4double
param = 1.5;
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G4XAqmTotal
aqmTotal;
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G4double
sigmaTot = aqmTotal.
CrossSection
(trk1,trk2);
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sigma = coeff *
G4Pow::GetInstance
()->
powA
(sigmaTot,param);
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// Verify that elastic cross section < total cross section
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if
(sigma > sigmaTot)
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throw
G4HadronicException
(__FILE__, __LINE__,
"G4XAqmElastic::CrossSection - elastic cross section greater than total"
);
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return
sigma;
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}
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G4String
G4XAqmElastic::Name
()
const
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{
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G4String
name
(
"AqmElasticCrossSection"
);
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return
name
;
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}
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G4bool
G4XAqmElastic::IsValid
(
G4double
e
)
const
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{
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G4bool
answer =
InLimits
(e,
_lowLimit
,
_highLimit
);
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return
answer;
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}
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G4XAqmElastic.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:44
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