Fission With Slow Neutrons
Question:
Why does nuclear fission in the nuclear plant have to be carried
out by bombardment of uranium 235 with SLOW neutrons? What will
happen if the neutrons are fast moving?
Answer:
The probability of a uranium 235 nucleus absorbing a neutron
increases the longer the neutron is in the vicinity of the
nucleus. Fast neutrons pass by so quickly that they are unlikely
to be absorbed.