|Message: Re: non uniform timing distribution||Not Logged In (login)|
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Please, be advised that the group velocity in the medium is calculated in G4 internally from:
v_group = c/(rindex+d(rindex)/d(log(E_phot)))
G4 presently does not first interpolate and smooth your input (rindex vs E_phot). It is thus very important for good and physical timing results without these fluctuations that you provide (from a smooth functional dependence) a large number of points for your rindex vs E_phot array.
Hope this helps and sorry for my delayed response (due to absence), Peter