Import Geant4 8.1.0 source tree
This commit is contained in:
Gabriele Cosmo
@@ -1,27 +1,30 @@
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//
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// ********************************************************************
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// * DISCLAIMER *
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// * License and Disclaimer *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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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 intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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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: G4MollerBhabhaModel.cc,v 1.22 2005/08/18 15:05:13 vnivanch Exp $
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// GEANT4 tag $Name: geant4-08-00 $
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// $Id: G4MollerBhabhaModel.cc,v 1.26 2006/06/29 19:53:06 gunter Exp $
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// GEANT4 tag $Name: geant4-08-01 $
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//
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// -------------------------------------------------------------------
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//
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@@ -44,6 +47,8 @@
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// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
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// 25-07-05 Add protection in calculation of recoil direction for the case
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// of complete energy transfer from e+ to e- (V.Ivanchenko)
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// 06-02-06 ComputeCrossSectionPerElectron, ComputeCrossSectionPerAtom (mma)
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// 15-05-06 Fix MinEnergyCut (V.Ivanchenko)
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//
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//
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// Class Description:
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@@ -52,8 +57,8 @@
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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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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "G4MollerBhabhaModel.hh"
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#include "G4Electron.hh"
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@@ -61,7 +66,7 @@
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#include "Randomize.hh"
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#include "G4ParticleChangeForLoss.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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using namespace std;
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@@ -77,12 +82,12 @@ G4MollerBhabhaModel::G4MollerBhabhaModel(const G4ParticleDefinition* p,
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theElectron = G4Electron::Electron();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4MollerBhabhaModel::~G4MollerBhabhaModel()
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{}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void G4MollerBhabhaModel::SetParticle(const G4ParticleDefinition* p)
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{
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@@ -90,27 +95,112 @@ void G4MollerBhabhaModel::SetParticle(const G4ParticleDefinition* p)
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if(p != theElectron) isElectron = false;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double G4MollerBhabhaModel::MinEnergyCut(const G4ParticleDefinition*,
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const G4MaterialCutsCouple* couple)
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{
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return couple->GetMaterial()->GetIonisation()->GetMeanExcitationEnergy();
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G4double electronDensity = couple->GetMaterial()->GetElectronDensity();
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G4double Zeff = electronDensity/couple->GetMaterial()->GetTotNbOfAtomsPerVolume();
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return 0.25*sqrt(Zeff)*keV;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void G4MollerBhabhaModel::Initialise(const G4ParticleDefinition* p,
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const G4DataVector&)
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{
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if(!particle) SetParticle(p);
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if(pParticleChange)
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fParticleChange = reinterpret_cast<G4ParticleChangeForLoss*>(pParticleChange);
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fParticleChange = reinterpret_cast<G4ParticleChangeForLoss*>
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(pParticleChange);
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else
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fParticleChange = new G4ParticleChangeForLoss();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double G4MollerBhabhaModel::ComputeCrossSectionPerElectron(
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const G4ParticleDefinition* p,
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G4double kineticEnergy,
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G4double cutEnergy,
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G4double maxEnergy)
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{
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if(!particle) SetParticle(p);
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G4double cross = 0.0;
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G4double tmax = MaxSecondaryEnergy(p, kineticEnergy);
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tmax = min(maxEnergy, tmax);
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if(cutEnergy < tmax) {
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G4double xmin = cutEnergy/kineticEnergy;
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G4double xmax = tmax/kineticEnergy;
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G4double gam = kineticEnergy/electron_mass_c2 + 1.0;
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G4double gamma2= gam*gam;
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G4double beta2 = 1.0 - 1.0/gamma2;
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//Moller (e-e-) scattering
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if (isElectron) {
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G4double g = (2.0*gam - 1.0)/gamma2;
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cross = ((xmax - xmin)*(1.0 - g + 1.0/(xmin*xmax)
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+ 1.0/((1.0-xmin)*(1.0 - xmax)))
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- g*log( xmax*(1.0 - xmin)/(xmin*(1.0 - xmax)) ) ) / beta2;
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//Bhabha (e+e-) scattering
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} else {
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G4double y = 1.0/(1.0 + gam);
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G4double y2 = y*y;
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G4double y12 = 1.0 - 2.0*y;
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G4double b1 = 2.0 - y2;
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G4double b2 = y12*(3.0 + y2);
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G4double y122= y12*y12;
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G4double b4 = y122*y12;
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G4double b3 = b4 + y122;
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cross = (xmax - xmin)*(1.0/(beta2*xmin*xmax) + b2
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- 0.5*b3*(xmin + xmax)
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+ b4*(xmin*xmin + xmin*xmax + xmax*xmax)/3.0)
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- b1*log(xmax/xmin);
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}
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cross *= twopi_mc2_rcl2/kineticEnergy;
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}
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return cross;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double G4MollerBhabhaModel::ComputeCrossSectionPerAtom(
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const G4ParticleDefinition* p,
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G4double kineticEnergy,
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G4double Z, G4double,
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G4double cutEnergy,
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G4double maxEnergy)
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{
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G4double cross = Z*ComputeCrossSectionPerElectron
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(p,kineticEnergy,cutEnergy,maxEnergy);
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return cross;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double G4MollerBhabhaModel::CrossSectionPerVolume(
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const G4Material* material,
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const G4ParticleDefinition* p,
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G4double kineticEnergy,
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G4double cutEnergy,
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G4double maxEnergy)
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{
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G4double eDensity = material->GetElectronDensity();
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G4double cross = eDensity*ComputeCrossSectionPerElectron
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(p,kineticEnergy,cutEnergy,maxEnergy);
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return cross;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double G4MollerBhabhaModel::ComputeDEDXPerVolume(
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const G4Material* material,
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@@ -190,61 +280,7 @@ G4double G4MollerBhabhaModel::ComputeDEDXPerVolume(
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return dedx;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4MollerBhabhaModel::CrossSectionPerVolume(
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const G4Material* material,
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const G4ParticleDefinition* p,
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G4double kineticEnergy,
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G4double cutEnergy,
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G4double maxEnergy)
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{
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if(!particle) SetParticle(p);
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G4double cross = 0.0;
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G4double tmax = MaxSecondaryEnergy(p, kineticEnergy);
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tmax = min(maxEnergy, tmax);
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if(cutEnergy < tmax) {
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G4double xmin = cutEnergy/kineticEnergy;
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G4double xmax = tmax/kineticEnergy;
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G4double gam = kineticEnergy/electron_mass_c2 + 1.0;
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G4double gamma2= gam*gam;
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G4double beta2 = 1.0 - 1.0/gamma2;
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//Moller (e-e-) scattering
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if (isElectron) {
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G4double g = (2.0*gam - 1.0)/gamma2;
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cross = ((xmax - xmin)*(1.0 - g + 1.0/(xmin*xmax)
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+ 1.0/((1.0-xmin)*(1.0 - xmax)))
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- g*log( xmax*(1.0 - xmin)/(xmin*(1.0 - xmax)) ) ) / beta2;
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//Bhabha (e+e-) scattering
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} else {
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G4double y = 1.0/(1.0 + gam);
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G4double y2 = y*y;
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G4double y12 = 1.0 - 2.0*y;
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G4double b1 = 2.0 - y2;
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G4double b2 = y12*(3.0 + y2);
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G4double y122= y12*y12;
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G4double b4 = y122*y12;
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G4double b3 = b4 + y122;
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cross = (xmax - xmin)*(1.0/(beta2*xmin*xmax) + b2
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- 0.5*b3*(xmin + xmax)
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+ b4*(xmin*xmin + xmin*xmax + xmax*xmax)/3.0)
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- b1*log(xmax/xmin);
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}
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cross *= twopi_mc2_rcl2*(material->GetElectronDensity())/kineticEnergy;
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}
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return cross;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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std::vector<G4DynamicParticle*>* G4MollerBhabhaModel::SampleSecondaries(
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const G4MaterialCutsCouple*,
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@@ -360,9 +396,9 @@ std::vector<G4DynamicParticle*>* G4MollerBhabhaModel::SampleSecondaries(
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// create G4DynamicParticle object for delta ray
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std::vector<G4DynamicParticle*>* vdp = new std::vector<G4DynamicParticle*>;
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G4DynamicParticle* delta = new G4DynamicParticle(theElectron,
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deltaDirection,deltaKinEnergy);
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deltaDirection,deltaKinEnergy);
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vdp->push_back(delta);
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return vdp;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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