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On Mon, 24 May 2004, Ken Sutherland wrote: > *** Discussion title: Particles > Email replies to PublicHyperNews@slac.stanford.edu must include: > In-Reply-To: <"/particles/65"@geant4-hn.slac.stanford.edu> > Subject: ...change this to be about your reply. > > 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. > > Thanks! > Hello, Examples for similar tasks can be found out in examples/extended/electromagnetic You need, book, store histograms and/or ntuples as it done in these tests. VI
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