Some comments: 1. This isn't a nuclear reactor, technically -- it's a neutron multiplier. The total amount of fissile material is sub-critical, so it can't su

Some comments: 1. This isn't a nuclear reactor, technically -- it's a neutron multiplier. The total amount of fissile material is sub-critical, so it can't sustain fission. 2. If you Google "Californium Neutron Flux Multiplier", you can find links to, among other things, the front page of a Kodak-published paper that talks about the use and acquisition of this source. It sounds like it was obtained through a pilot program with the DoE, looking for alternative uses of their nuclear technology. There's also a link to a letter from Kodak's head of radiation safety to the NRC talking about the shut-down and decommissioning of the multiplier.