<?xml version='1.0' encoding='utf-8'?>
<geometry>
  <cell id="1" material="1" region="1 2 -3 4" universe="0" />
  <cell id="2" material="2" region="1 2 -4" universe="0" />
  <surface boundary="periodic" coeffs="0.4999999999999999 0.8660254037844387 0.0 0.0" id="1" type="plane" />
  <surface boundary="periodic" coeffs="0.4999999999999999 -0.8660254037844387 0.0 0.0" id="2" type="plane" />
  <surface boundary="reflective" coeffs="5.0" id="3" type="x-plane" />
  <surface coeffs="2.598076211353316 1.4999999999999998 2.0" id="4" type="z-cylinder" />
</geometry>
<?xml version='1.0' encoding='utf-8'?>
<materials>
  <material id="1">
    <density units="g/cc" value="1.0" />
    <nuclide ao="2.0" name="H1" />
    <nuclide ao="1.0" name="O16" />
    <sab name="c_H_in_H2O" />
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  <material depletable="true" id="2">
    <density units="g/cc" value="4.5" />
    <nuclide ao="1.0" name="U235" />
  </material>
</materials>
<?xml version='1.0' encoding='utf-8'?>
<settings>
  <run_mode>eigenvalue</run_mode>
  <particles>1000</particles>
  <batches>4</batches>
  <inactive>0</inactive>
  <source strength="1.0">
    <space type="box">
      <parameters>0 0 0 5 5 0</parameters>
    </space>
  </source>
</settings>
