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Made suggested changes to material section in user guide.

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Co-Authored-By: Simon Richards <s.richards@physics.org>
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SamPUG 2020-03-04 09:07:09 +00:00 • committed by GitHub
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docs/source/usersguide/materials.rst
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@ -158,10 +158,10 @@ material with 3% plutonium oxide by weight could be created using the following:
mox = openmc.Material.mix_materials([uo2, puo2], [0.97, 0.03], 'wo')
It should be noted that if mixing fractions are specifed as atomic or weight
fractions, the sum of the given fractions should be one. If volume fractions
are provided and the sum fractions is less than one, the remaining fraction is
set as void material.
It should be noted that, if mixing fractions are specifed as atomic or weight
fractions, the supplied fractions should sum to one. If the fractions are specified
as volume fractions, and the sum of the fractions is less than one, then the remaining
fraction is set as void material.
.. warning:: Materials with :math:`S(\alpha,\beta)` thermal scattering data
cannot be used in :meth:`Material.mix_materials`. However, thermal