Re: USRYIELD residuals output understanding problem

From: Sebastien WURTH (wurth@ipno.in2p3.fr)
Date: Thu Jun 08 2006 - 09:54:08 CEST

  • Next message: Vitaly Pronskikh: "Re: USRYIELD residuals output understanding problem"

    Vitaly Pronskikh a écrit :

    >Dear FLUKA experts and users,
    >
    >I calculated secondary nuclei production in a C-12
    >irradiated carbon target (for hadrotherapy purposes),
    >and used the USRYIELD card to obtain the fragment
    >Z distribution (see attachment), and have found the
    >following two problem:
    >1) distributions in d(Omega) and dE give very different
    >results, even after correction for bin widths. And, most
    >sad, both numbers differ from that from RESNUCL output,
    >2) the product nuclei heavier then He seem not to be
    >produced at all, despite that all necessary options seem
    >to me to be turned on,
    >
    >Do you have any suggestions about this ?
    >
    >
    >
    Hello Vitaly,

    In your RESNUCLEi card your WHAT(1) is set to 1.0, only spallation
    products will be scored. Quoting Fluka's Manual (Resnuclei part) : all
    inelastic interactions except those induced by neutrons below the
    threshold for multigroup treatment. Is that really what you want ? With
    CARBON, it is possible to score all residual nuclei.

    Regards.
    Sebastien.

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