Assertion: fission | /r/CreatedBy | slow neutrons
Facets:
value: most readily
type: MANNER
Source sentences:
text: Neutrons released in fission are initially fast (velocity about 109 cm/sec, or energy above 1 MeV), but fission in U-235 is most readily caused by slow neutrons (velocity about 105 cm/s, or energy about 0.02 eV).