14 Feb '10 21:40>
Originally posted by zeeblebotThat first was totally unfounded, it was a sponge🙂
didn't you just come into some money?
----
http://en.wikipedia.org/wiki/Neutron_source
Small sized devices
Radioisotopes which undergo spontaneous fission
Certain isotopes undergo spontaneous fission with emission of neutrons. The most commonly used spontaneous fission source is the radioactive isotope californium-252. Cf-252 and all other ...[text shortened]... alue in 2.6 years. The price of a typical Cf-252 neutron source is from $15,000 to $20,000.