// // ******************************************************************** // * License and Disclaimer * // * * // * The Geant4 software is copyright of the Copyright Holders of * // * the Geant4 Collaboration. It is provided under the terms and * // * conditions of the Geant4 Software License, included in the file * // * LICENSE and available at http://cern.ch/geant4/license . These * // * include a list of copyright holders. * // * * // * Neither the authors of this software system, nor their employing * // * institutes,nor the agencies providing financial support for this * // * work make any representation or warranty, express or implied, * // * regarding this software system or assume any liability for its * // * use. Please see the license in the file LICENSE and URL above * // * for the full disclaimer and the limitation of liability. * // * * // * This code implementation is the result of the scientific and * // * technical work of the GEANT4 collaboration. * // * By using, copying, modifying or distributing the software (or * // * any work based on the software) you agree to acknowledge its * // * use in resulting scientific publications, and indicate your * // * acceptance of all terms of the Geant4 Software license. * // ******************************************************************** // // $Id: G4hIonisation.cc,v 1.85 2010/06/04 09:22:14 vnivanch Exp $ // GEANT4 tag $Name: geant4-09-04-beta-cand-01 $ // // ------------------------------------------------------------------- // // GEANT4 Class file // // // File name: G4hIonisation // // Author: Laszlo Urban // // Creation date: 30.05.1997 // // Modifications: // // corrected by L.Urban on 24/09/97 // several bugs corrected by L.Urban on 13/01/98 // 07-04-98 remove 'tracking cut' of the ionizing particle, mma // 22-10-98 cleanup L.Urban // 02-02-99 bugs fixed , L.Urban // 29-07-99 correction in BuildLossTable for low energy, L.Urban // 10-02-00 modifications , new e.m. structure, L.Urban // 10-08-00 V.Ivanchenko change BuildLambdaTable, in order to // simulate energy losses of ions; correction to // cross section for particles with spin 1 is inserted as well // 28-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation // 10-08-01 new methods Store/Retrieve PhysicsTable (mma) // 14-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma) // 29-08-01 PostStepDoIt: correction for spin 1/2 (instead of 1) (mma) // 17-09-01 migration of Materials to pure STL (mma) // 25-09-01 completion of RetrievePhysicsTable() (mma) // 29-10-01 all static functions no more inlined // 08-11-01 Charge renamed zparticle; added to the dedx // 27-03-02 Bug fix in scaling of lambda table (V.Ivanchenko) // 09-04-02 Update calculation of tables for GenericIons (V.Ivanchenko) // 30-04-02 V.Ivanchenko update to new design // 04-12-02 Add verbose level definition (VI) // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko) // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko) // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko) // 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko) // 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko) // 04-08-03 Set integral=false to be default (V.Ivanchenko) // 08-08-03 STD substitute standard (V.Ivanchenko) // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko) // 27-05-04 Set integral to be a default regime (V.Ivanchenko) // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko) // 24-03-05 Optimize internal interfaces (V.Ivantchenko) // 12-08-05 SetStepLimits(0.2, 0.1*mm) (mma) // 10-01-06 SetStepLimits -> SetStepFunction (V.Ivanchenko) // 26-05-06 scale negative particles from pi- and pbar, // positive from pi+ and p (VI) // 14-01-07 use SetEmModel() and SetFluctModel() from G4VEnergyLossProcess (mma) // 12-09-08 Removed CorrectionsAlongStep (VI) // 27-05-10 Added G4ICRU73QOModel for anti-protons (VI) // // ------------------------------------------------------------------- // //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... #include "G4hIonisation.hh" #include "G4Electron.hh" #include "G4Proton.hh" #include "G4AntiProton.hh" #include "G4BraggModel.hh" #include "G4BetheBlochModel.hh" #include "G4IonFluctuations.hh" #include "G4UniversalFluctuation.hh" #include "G4BohrFluctuations.hh" #include "G4UnitsTable.hh" #include "G4PionPlus.hh" #include "G4PionMinus.hh" #include "G4KaonPlus.hh" #include "G4KaonMinus.hh" #include "G4ICRU73QOModel.hh" //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... using namespace std; G4hIonisation::G4hIonisation(const G4String& name) : G4VEnergyLossProcess(name), isInitialised(false) { //SetStepFunction(0.2, 1.0*mm); //SetIntegral(true); //SetVerboseLevel(1); SetProcessSubType(fIonisation); mass = 0.0; ratio = 0.0; } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... G4hIonisation::~G4hIonisation() {} //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... G4bool G4hIonisation::IsApplicable(const G4ParticleDefinition& p) { return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV && !p.IsShortLived()); } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... G4double G4hIonisation::MinPrimaryEnergy(const G4ParticleDefinition*, const G4Material*, G4double cut) { G4double x = 0.5*cut/electron_mass_c2; G4double g = x*ratio + std::sqrt((1. + x)*(1. + x*ratio*ratio)); return mass*(g - 1.0); } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... void G4hIonisation::InitialiseEnergyLossProcess( const G4ParticleDefinition* part, const G4ParticleDefinition* bpart) { if(!isInitialised) { const G4ParticleDefinition* theBaseParticle = 0; G4String pname = part->GetParticleName(); G4double q = part->GetPDGCharge(); // standard base particles if(part == bpart || pname == "proton" || pname == "anti_proton" || pname == "pi+" || pname == "pi-" || pname == "kaon+" || pname == "kaon-") { theBaseParticle = 0; } // select base particle else if(bpart == 0) { if(part->GetPDGSpin() == 0.0) { if(q > 0.0) { theBaseParticle = G4KaonPlus::KaonPlus(); } else { theBaseParticle = G4KaonMinus::KaonMinus(); } } else { if(q > 0.0) { theBaseParticle = G4Proton::Proton(); } else { theBaseParticle = G4AntiProton::AntiProton(); } } // base particle defined by interface } else { theBaseParticle = bpart; } SetBaseParticle(theBaseParticle); SetSecondaryParticle(G4Electron::Electron()); mass = part->GetPDGMass(); ratio = electron_mass_c2/mass; eth = 2.0*MeV*mass/proton_mass_c2; if (!EmModel(1)) { if(q > 0.0) { SetEmModel(new G4BraggModel(),1); } else { SetEmModel(new G4ICRU73QOModel(),1); } } EmModel(1)->SetLowEnergyLimit(MinKinEnergy()); // model limit defined for protons //eth = (EmModel(1)->HighEnergyLimit())*mass/proton_mass_c2; EmModel(1)->SetHighEnergyLimit(eth); AddEmModel(1, EmModel(1), new G4IonFluctuations()); if (!FluctModel()) { SetFluctModel(new G4UniversalFluctuation()); } if (!EmModel(2)) { SetEmModel(new G4BetheBlochModel(),2); } EmModel(2)->SetLowEnergyLimit(eth); EmModel(2)->SetHighEnergyLimit(MaxKinEnergy()); AddEmModel(2, EmModel(2), FluctModel()); isInitialised = true; } } //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... void G4hIonisation::PrintInfo() {} //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... void G4hIonisation::ActivateNuclearStopping(G4bool) {} //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....