IRRPROFI with non-monoenergetic beam

From: <>
Date: Mon, 15 Nov 2010 12:57:27 +0000

Dear Fluka users,

   I am trying to model the irradiation of a sample with a neutron beam.
I have the beam spectrum (in terms of energy bands and neutron flux in
each energy band) and so can use the SOURCE user routine to sample the
primary particle energy according to the instructions in the Fluka
manual for biased sampling.

I then set up the IRRPROFI card to define the irradiation profile. This
requires beam intensity in particles per second. My question is, what
beam energy will Fluka use for this irradiation if I am using the
user-defined source ?
If I set the beam intensity =3D total neutron flux * sample area =
sample is uniformly irradiated), will the primary particle weights
calculated in the SOURCE routine ensure that the correct proportion of
the total flux is assigned to each energy band in the spectrum ? If not,
can anyone suggest how I can do this ?

Any help would be much appreciated,

Received on Mon Nov 15 2010 - 17:00:17 CET

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