General description

This example is provided by the Geant4-DNA collaboration.

These processes and models are further described at: http://geant4-dna.org

Any report or published results obtained using the Geant4-DNA software shall cite the following Geant4-DNA collaboration publications: Phys. Med. 31 (2015) 861-874 Med. Phys. 37 (2010) 4692-4708

How to activate chemistry code.

How to set minimum time step limits using TimeStepAction.

GEOMETRY DEFINITION

It is a simple box which represents a 'semi infinite' homogeneous medium.

Two parameters define the geometry :

• the material of the box,
• the full size of the box.

The default geometry is constructed in DetectorConstruction class.

PHYSICS LIST

PhysicsList is Geant4 modular physics list using G4EmDNAPhysics & G4EmDNAChemistry constructors.

AN EVENT: THE PRIMARY GENERATOR

The primary kinematic consists of a single particle starting at the center of the box. The type of the particle and its energy are set in the PrimaryGeneratorAction class, and can be changed via the G4 build-in commands of G4ParticleGun class. The chemistry module is triggered in the StackingAction class when all physical tracks have been processed.

OUTPUT <br>

Physics initialization and the defined reaction table are printed. G4ITStepManager processes the chemical stage time step after time step. Chemical reactions are printed.