<?xml version='1.0' encoding='utf-8'?>
<geometry>
  <cell id="1" material="1" region="-1" universe="1" />
  <surface boundary="vacuum" coeffs="0.0 0.0 0.0 10.0" id="1" type="sphere" />
</geometry>
<?xml version='1.0' encoding='utf-8'?>
<materials>
  <material depletable="true" id="1">
    <density units="g/cc" value="7.5" />
    <nuclide ao="1.0" name="O16" />
    <nuclide ao="0.0001" name="U238" />
  </material>
</materials>
<?xml version='1.0' encoding='utf-8'?>
<settings>
  <run_mode>fixed source</run_mode>
  <particles>100</particles>
  <batches>10</batches>
  <source strength="10.0">
    <space type="point">
      <parameters>0.0 0.0 0.0</parameters>
    </space>
  </source>
  <temperature_default>294</temperature_default>
</settings>
<?xml version='1.0' encoding='utf-8'?>
<tallies>
  <tally id="1">
    <scores>flux</scores>
  </tally>
</tallies>
