OpenMC/tests/regression_tests/random_ray_entropy/settings.xml

<?xml version='1.0' encoding='UTF-8'?>
<settings>
  <run_mode>eigenvalue</run_mode>
  <particles>100</particles>
  <batches>10</batches>
  <inactive>5</inactive>
  <energy_mode>multi-group</energy_mode>
  <random_ray>
    <ray_source>
      <source particle="neutron" strength="1.0" type="independent">
        <space type="box">
          <parameters>0.0 0.0 0.0 100.0 100.0 100.0</parameters>
        </space>
      </source>
    </ray_source>
    <distance_inactive>40.0</distance_inactive>
    <distance_active>400.0</distance_active>
  </random_ray>
</settings>