Re: Neutron Yields Below 19.6MeV

From: Stefan Roesler (
Date: Fri Mar 09 2007 - 12:17:36 CET

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    Hi Lindley,

    Its really difficult to tell. Although I helped Y-F Wang with the FLUKA
    input and user routines I think that I did neither run it nor analysed the
    output. Anyway, I've attached an input file which I still found so that
    you can check and compare settings (be careful, a few options may have
    become obsolete). It might be worthwhile to use these settings (thesholds
    etc.) with your input just to see if they explain differences (e.g., use
    the entire input, of course after adapting it to the present FLUKA).
    Otherwise, I don't see anything wrong in your mgdraw...


    On Tue, 6 Mar 2007, Lindley Winslow wrote:

    > Hello All,
    > I am sorry for all who are not interested in neutron production for yet
    > another neutron yield question.
    > I am trying to reproduce a plot from Wang et. al. (PhysRevD 64 013012) that
    > shows the fraction of neutrons from various processes. I am finding that too
    > many neutrons produced in iCode==300 reactions and get more consistent results
    > neglecting them completely. Please see attached pdf for orginal plot and my
    > current results for 10.3MeV.
    > I am calculating N_neutrons as the sum over the weights of the outgoing
    > neutrons minus the weight of the incoming neutron. If the incoming particle
    > was not a neutron I do not subtract anything obviously.
    > I assume this is a problem with my treatment of the neutrons below 19.6MeV.
    > As usual mgdraw.f and .inp attached too,
    > Thank you,
    > Lindley
    > I

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