Fission reactions can get out of control without B. critical mass taking place. Critical mass is the minimum amount of fissile material needed to maintain a sustained nuclear chain reaction. If the mass is below this threshold (subcritical mass), the reaction will not sustain itself.
Fission reactions can get out of control without what taking place?
A.
chain reaction
B.
critical mass
C.
neutron heating
D.
neutron moderation
E.
subcritical mass
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