Assertion: heavy water's neutron | /r/HasProperty | absorbed by the control rods
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text: The neutrons that are absorbed by the control rods cannot take part in the chain reaction, however, when the control rods are raised out of the core, more neutrons strike the fissile U-235 (or Pu-239) nuclei in nearby fuel rods, and the chain reaction intensifies as the control rods are out of the way.