another low energy neutron xsec case

From: Reddell, Brandon D (brandon.d.reddell@boeing.com)
Date: Sun Sep 11 2005 - 21:26:27 CEST

  • Next message: Sébastien WURTH: "Re: another low energy neutron xsec case"

    Dear FLUKA users,

    I am getting the following familiar error message that has been posted before:

      **** Low energy neutron xsec not found for some media 3 5 ****

    However, I can not determine what the problem is. Below are my material and assignment statements. Could somebody tell me what I am doing wrong?

    Sincerely,

    Brandon Reddell

    *23456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
    *MATERIAL 13.0 27.000 2.70 10.0 ALUMINUM
    *LOW-MAT 13.0 13.0 -2.0 293.0
    *MATERIAL 14.0 28.100 2.329 13.0 SILICON
    *
    *23456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
    MATERIAL 7.0 14.067 0.001251 7.0 NITROGEN
    LOW-MAT 7.0 7.0 -2.0 293. NITROGEN
    MATERIAL 8.0 15.999 0.001429 8.0 OXYGEN
    LOW-MAT 8.0 8.0 -2.0 293. OXYGEN
    MATERIAL 1.0 1.0079 8.988E-5 3.0 HYDROGEN
    LOW-MAT 3.0 3.0 -2.0 293.0 HYDROGEN
    * Argon material n. 18, normal temperature, overrides default mat. 18
    MATERIAL 18.0 39.948 1.400 18.0 ARGON
    LOW-MAT 18.0 18.0 -2.0 293.0 ARGON
    * Air (mat. 24): 3 components, N (mat. 7), O (mat. 8), gaseous Ar (mat. 18)
    MATERIAL 0.001225 26.0 AIR
    COMPOUND -.9256E-03 7.0 -.2837E-03 8.0 -.01572E-3 18.0 AIR
    * Water (mat. 20): H (material 3) and O (material 8)
    MATERIAL 1.00 27.0 WATER
    COMPOUND 2.0 3.0 1.0 8.0 WATER
    *23456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
    * Aluminum
    ASSIGNMAT 10.0 3.0
    * External Black Hole
    ASSIGNMAT 1.0 1.0
    * Vacuum
    ASSIGNMAT 2.0 2.0
    * Air
    ASSIGNMAT 26.0 4.0
    * Water
    ASSIGNMAT 27.0 5.0
    ASSIGNMAT 27.0 6.0
    LOW-NEUT 0.0
    EMF EMF-OFF
    *23456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789


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