Re: Questions about EM interactions and scoring

From: Stefan Roesler <>
Date: Thu, 15 Nov 2012 16:54:59 +0100

Dear Michele

1) With defaults PRECISIO or via the EMFLUO card fluorescence emissions
can be activated for all reactions where FLUKA explicitly predicts an
atomic vacancy, presently for photelectric effect and Compton scattering.
Please note that FLUKA does not yet include fluorescence emissions induced
by electrons/positrons or other charged particles.

2) There is no option for next event estimation available in FLUKA.
However, you could define a fine fluence USRBIN mesh and put a fit through
results of neighboring bins offline(?)


On Tue, 13 Nov 2012, Michele Marziani wrote:

> Dear Fluka experts,
> I'm evaluating the suitability of Fluka for EMF-only simulations below
> 100 keV. I would like confirmation on a couple of items:
> 1) There is no modelling of electron impact ionization with subsequent
> atomic relaxations and characteristic x-ray production. Is it correct?
> 2) Is there any way to mimic a "point detector" in MCNP/MCNPX jargon?
> i.e. a partially-deterministic variance reduction technique called "next
> event estimator" because it is a fluence tally at a point if the next
> event is a trajectory without further collision directly to the point
> detector. It would be useful as an alternative to a track-length fluence
> estimator for very small volumes far from the source, at specific
> directions.
> Thank you,
> Michele
Received on Thu Nov 15 2012 - 21:00:14 CET

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