Fast fission is fission that occurs when a heavy atom absorbs a high-energy neutron, called a fast neutron, and splits. Most fissionable materials need thermal neutrons, which move slower.
Read more about Fast Fission: Fast Reactors Vs. Thermal Reactors, Fissionable But Not Fissile, Differences in Fission Product Yield
Famous quotes containing the words fast and/or fission:
“But he knows the way that I take; when he has tested me, I shall come out like gold. My foot has held fast to his steps; I have kept his way and have not turned aside. I have not departed from the commandment of his lips; I have treasured in my bosom the words of his mouth.”
—Bible: Hebrew, Job 23:10-12.
Job, of God.
“The pace of science forces the pace of technique. Theoretical physics forces atomic energy on us; the successful production of the fission bomb forces upon us the manufacture of the hydrogen bomb. We do not choose our problems, we do not choose our products; we are pushed, we are forced—by what? By a system which has no purpose and goal transcending it, and which makes man its appendix.”
—Erich Fromm (1900–1980)