Assertion: decay's neutron | /r/Causes | fission
Facets:
Source sentences:
text: Thermal neutrons are more likely than fast neutrons to cause fission.
text: However, low-energy (slow, or thermal) neutrons are able to cause fission only in those isotopes of uranium and plutonium whose nuclei contain odd numbers of neutrons (e.g. U-233, U-235, and Pu-239).
text: These neutrons can be absorbed by other atoms and cause nuclear reactions, such as decay or fission, or they can collide with other atoms, like billiard balls, and cause gamma rays to be emitted.