This was a miniature plasma reactor. I thought I recalled it was a Farnsworth Fusor, but these sources says it was a "rigatron" based on an MIT design, designed by Bussard:
http://en.wikipedia.org/wiki/Robert_W._Bussard http://fusor.net/old-boards/songs.com/msgs/msg-1087.html Nothing to do with cold fusion. Not even cold, just small. - Jed
