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Question Electron and nuclear collisions 

Forum: Particles
Date: 24 May, 2004
From: Ken Sutherland <>

I am a geant4 novis.

I have set up an experiment (based on EX02) in which 250 MeV protons are shot at water (50 cm cube).

Everything works fine. I can see the proton track (blue), hits (yellow), secondary e- tacks (red) and gamma tracks (green).

My professor now wants me to investigate how the energy is absorbed at each hit. Is there a way to determine if the proton has collided with an electron or the nucleus? Sometimes (rarely), the proton is deflected at a sharp angle. I assume that this is the result of the proton hitting a nucleus.

Also, is there a way to determine if the hit results in an outer-shell electron excitation or ejection of the water molecule?

I have been looking at TrackerSD::ProcessHits from various examples, but don't see how to do this.


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1 None: Re: Electron and nuclear collisions   (Vladimir IVANTCHENKO - 25 May, 2004)
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