source: trunk/source/processes/electromagnetic/standard/src/G4eIonisation.cc @ 819

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// $Id: G4eIonisation.cc,v 1.53 2007/05/22 17:34:36 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-01-patch-02 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class file
//
//
// File name:     G4eIonisation
//
// Author:        Laszlo Urban
//
// Creation date: 20.03.1997
//
// Modifications:
//
// 07-04-98 remove 'tracking cut' of the ionizing particle, mma
// 04-09-98 new methods SetBining() PrintInfo()
// 07-09-98 Cleanup
// 02-02-99 correction inDoIt , L.Urban
// 10-02-00 modifications , new e.m. structure, L.Urban
// 28-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
// 09-08-01 new methods Store/Retrieve PhysicsTable (mma)
// 13-08-01 new function ComputeRestrictedMeandEdx()  (mma)
// 17-09-01 migration of Materials to pure STL (mma)
// 21-09-01 completion of RetrievePhysicsTable() (mma)
// 29-10-01 all static functions no more inlined (mma)
// 07-11-01 particleMass and Charge become local variables
// 26-03-02 change access to cuts in BuildLossTables (V.Ivanchenko)
// 30-04-02 V.Ivanchenko update to new design
// 23-12-02 Change interface in order to move to cut per region (VI)
// 26-12-02 Secondary production moved to derived classes (VI)
// 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)
// 08-08-03 STD substitute standard  (V.Ivanchenko)
// 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
// 12-08-05 SetStepLimits(0.2, 0.1*mm) (mma)
// 02-09-05 Return SetStepLimits(1, 1*mm) (V.Ivantchenko)
// 10-01-06 SetStepLimits -> SetStepFunction (V.Ivantchenko)
// 14-01-07 use SetEmModel() and SetFluctModel() from G4VEnergyLossProcess (mma)
//
// -------------------------------------------------------------------
//
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#include "G4eIonisation.hh"
#include "G4Electron.hh"
#include "G4MollerBhabhaModel.hh"
#include "G4UniversalFluctuation.hh"
#include "G4BohrFluctuations.hh"
#include "G4UnitsTable.hh"

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using namespace std;

G4eIonisation::G4eIonisation(const G4String& name)
  : G4VEnergyLossProcess(name),
    theElectron(G4Electron::Electron()),
    isElectron(true),
    isInitialised(false)
{
  SetStepFunction(0.2, 1*mm);
  SetIntegral(true);
  SetVerboseLevel(1);
}

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G4eIonisation::~G4eIonisation()
{}

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void G4eIonisation::InitialiseEnergyLossProcess(
                    const G4ParticleDefinition* part,
                    const G4ParticleDefinition*)
{
  if(!isInitialised) {
    if(part == G4Positron::Positron()) isElectron = false;
    SetSecondaryParticle(theElectron);
    if (!EmModel()) SetEmModel(new G4MollerBhabhaModel());
    EmModel()->SetLowEnergyLimit (100*eV);
    EmModel()->SetHighEnergyLimit(100*TeV);
    if (!FluctModel()) SetFluctModel(new G4UniversalFluctuation());
                
    AddEmModel(1, EmModel(), FluctModel());
    isInitialised = true;
  }
}

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void G4eIonisation::PrintInfo()
{
  if(EmModel())
    G4cout << "      Delta cross sections and sampling from " 
           << EmModel()->GetName() << " model"
           << "\n      Good description from 1 KeV to 100 GeV."
           << G4endl;
}

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