FLUKA: TSL-PWXS
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TSL-PWXS
Sets the correspondence between Fluka materials and the pointwise low
energy neutron Thermal Scattering Law data sets
WHAT(1)
= isomer code of the target (Z x 10000 + A x 10 + m) Z, A, m, are
the atomic, mass and isomer number of the isotope
no default, a value < 0 resets the association to null
If what(1) = 1.0, it is interpreted as to let FLUKA choose the
corresponding pointwise cross ection data sets for all
isotopes of the elements defined by what(4)-what(6)
WHAT(2)
= material index for the Thermal Scattering Law, there is
no default.
Currently supported (not all already implemented):
For a specific isotope (Iaziso>10000):
1 = 1-H in H2O
2 = 1-H in para-hydrogen
3 = 1-H in ortho-hydrogen
7 = 1-H in ZrH
10 = 1-H in Ice
11 = 2-H in D2O
12 = 2-H in para-hydrogen
13 = 2-H in ortho-hydrogen
18 = 40-Ar in liquid Argon
26 = Al in metallic Aluminum
30 = C in Crystalline graphite
31 = C in Reactor graphite, 10% porosity
37 = 1-H in CH2
43 = Si in SiC
44 = C in SiC
50 = O in Ice
56 = 56-Fe in metallic Iron
58 = Zr in ZrH
For a generic association (Iaziso=1):
1 = Generic for XX in H2O
2 = Generic for XX in para-hydrogen
3 = Generic for XX in ortho-hydrogen
7 = Generic for XX in ZrH
10 = Generic for XX in Ice
18 = Generic for XX in liquid Argon
26 = Generic for XX in metallic Al
30 = Generic for XX in crystalline graphite
31 = Generic for XX in reactor graphite
37 = Generic for XX in CH2
43 = Generic for XX in SiC
44 = Generic for XX in SiC
56 = Generic for XX in metallic Fe
WHAT(3)
= pointwise xsec temperature (def.=296, 0 is ignored, < 0 resets to
default), actually 0 or < 0 behave the same
WHAT(4)
= from material "WHAT(4)
" .... (def. 3)
WHAT(5)
= .... to material "WHAT(5)
" .... (def. WHAT(4)
)
WHAT(6)
= .... in step of "WHAT(6)
" (def. 1)
SDUM10 = extra string defining the release for the TSL cross section
file (default=blank, the code will select which release to use
if more then one are available).
The file name looked for by Fluka in the directory
$FLUKA/pwxs is composed as:
<isomer code>-tsl-<bound mat>-<release>-<temp>.pwx
where <bound mat> is defined in association with WHAT(2)
Notes:
1) If pointwise Thermal Scattering Laws are requested for a compound
the request is ignored. This card works only for elements,
nevertheless it will silently ignore possible compounds included
in the list defined by what(4)-what(6)
2) The list of available TSL, isotopes, and temperatures, as well as of
the originating evaluated data file can be easily obtained looking
in the $FLUPRO/pwxs directory for files with ...-tsl-...
Examples:
Associate the TSL for hydrogen in Ice at 228.15 K to all materials.
It will apply to both 1-H in hydrogen and 16-O in Oxygen since this TSL
exists for both, selecting the endfb8r0 release file:
TSL-PWXS 1.0 10.0 228.15 HYDROGEN @LASTMAT endfb8r0
Associate the TSL for para-hydrogen at 20 K to the PARAHYD material. It
will apply to both 1-H and 2-H since the this TSL exists for both, which
release to use will be decided by FLUKA:
MATERIAL 1.0 0.07085 PARAHYD
TSL-PWXS 1.0 2.0 20.0 PARAHYD PARAHYD
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