How much of a fissionable material is required to have a self-sustaining reaction?
A)A mass of the fissionable element that is three times its atomic weight is required.
B)A mass of the fissionable element that is greater than the mass of the control rods.
C)A supercritical mass of fissionable material is required and causes branching.
D)A critical mass of fissionable material is required and varies depending on the identity of the fissionable material.

Question

Quizplus · Accepted Answer

A critical mass of fissionable material is necessary for a self-sustaining nuclear chain reaction. This mass depends on the properties of the material, including its density, shape, purity, and the presence of a neutron reflector.

How Much of a Fissionable Material Is Required to Have