Say, suppose the dots were wire cross sections and charged to 30 KV
or so. Further suppose the two, or even multiple, wires formed a
long circle in a complete vacuum, similar to a tokamak. At the right
pressure it would be like a Farnsworth fusor version of tokamak,
except no AC needed, just a good angle of beam injection. The fusion
heat would take care of the rest. The "wires" could be hollow and
water cooled.
BTW, here is a single dot version that seems to demonstrate a
particle strike on the plate removes some energy, so there must
indeed be energy added by the attraction of the "dot":
<<inline: Attractor.jpg>>
Horace Heffner
http://www.mtaonline.net/~hheffner/