The radioactive carbon diamond is probably acting as a diode, making it a self-powered diode. The beta emission would be similar to high voltage. It is a good bet that the physical shape must be tapered and brings to mind the Shawyer cavity.
Schottky diodes made of artificial diamond are known to have extreme breakdown voltages >6 kV which is many times greater than semiconductor diodes. On Monday, November 28, 2016 8:11 AM, Jack Cole <jcol...@gmail.com> wrote: Diamonds turn nuclear waste into nuclear batterieshttp://flip.it/dKKukF