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:
“For men tied fast to the absolute, bled of their differences, drained of their dreams by authoritarian leeches until nothing but pulp is left, become a massive, sick Thing whose sheer weight is used ruthlessly by ambitious men. Here is the real enemy of the people: our own selves dehumanized into “the masses.” And where is the David who can slay this giant?”
—Lillian Smith (1897–1966)
“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)