Assertion: atom's neutron | /r/CreatedBy | other fissioning u-235 nuclei
Facets:
value: in other words
type: OTHER
value: in the jacket
type: LOCATION
Source sentences:
text: This is because U-235 nuclei also undergo fission by slow neutrons (U-238 nuclei require a minimum energy of about 1 mega-electron volt), and because these slower neutrons are produced by other fissioning U-235 nuclei in the jacket (in other words, U-235 supports the nuclear chain reaction whereas U-238 does not).