Dear Nkanyiso,
you have a point.
FLUKA does not use cross section libraries, except for interactions
induced by neutrons below 20 MeV.
It uses its own models for calculating the sharing among the different
reaction channels and its own parametrizations for calculating the
reaction cross section. Here the issue is with the latter, whose
sub-barrier extension (below 10 MeV proton energy in this case) is
just missing and prevents you from simulating neutron production in that
range.
Best regards
Francesco
**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854
On Fri, 12 May 2017, NKANYISO ROBERT Mantengu wrote:
> Dear FLUKA users
>
> I'm simulating the Ta-181(p,n)W-181 reaction.
>
> Beam properties
> * 6 MeV energy proton beam.
> * 200 micro A current.
>
> My problem is that I don't see any neutrons until I set the beam energy to 9.6 MeV which is in
> contrast with the cross section plot (attached below) produced using the EXFOR cross section
> data.
>
> So my question is what cross section library is used to handle hadron-nucleon interactions in
> PEANUT model.
>
> Any help/comments will be appreciated.
> Thanks in advanced.
>
> NB: The FLUKA input is also attached in this email.
>
> Regards,
> Nkanyiso R. Mantengu
>
>
>
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>
>
>
>
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Received on Fri May 12 2017 - 18:12:34 CEST