Assertion: atom's nucleus | /r/CapableOf | emit one or two free neutrons
Facets:
value: with some kinetic energy
type: OTHER
value: in the process
type: TEMPORAL
Source sentences:
text: These trace amounts of 239Pu originate in the following fashion: on rare occasions, 238U undergoes spontaneous fission, and in the process, the nucleus emits one or two free neutrons with some kinetic energy.