Fraction of fission neutrons emitted by beta-decay of fission products rather than promptly. β ≈ 0.0065 for ²³⁵U. The slow timescale of delayed neutrons is what makes a thermal reactor controllable — without them the system would respond…
Fraction of fission neutrons emitted by beta-decay of fission products rather than promptly. β ≈ 0.0065 for ²³⁵U. The slow timescale of delayed neutrons is what makes a thermal reactor controllable — without them the system would respond…