Geant4-DNA and dnaphysics

Physics Processes, Models and Cross Sections
1

Hello my friends,
Recently I want to use the example of “dnaphysics” to simulation the track structure of the electron in wrater. Here is my macro file.

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But there are no secondary particles produced except secondary electrons, as shown in the following figure. Is this normal?
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2

Dear,

The simulation of the track structure in Geant4-DNA has an upper limit up to 1 MeV.

3

Dear，

Thanks for your reply. I used the physics process of “DNA_opt2” and added the “emstandard_opt4” in this simulation. This allows, for example, to simulate the interactions of electrons beyond the 1 MeV maximum upper limit of Geant4-DNA electron models using Geant4 electromagnetic physicsmodels above this limit.
So why the simulation of the track structure can’t be implemented when energy is greater than 1MeV?

Thanks.

4

Dear,

A new extension of the electron track structure may be implemented in next version. However, time consuming for high energies of track structure could be a reason.