The "Mike Device" was based upon a deuterium-deuterium reaction where the thermonuclear explosive/fuel was cryogenic. Many of David F. Mayer's comments would have been applicable to the Mike Device. Of course the Mike Device was not a weapon and the point of this thread was whether or not He-3 can be weaponized. I believe there are some boron isotopes that can undergo fusion without emitting neutrons (they have an even higher ignition temperature). I wonder if those isotopes would be more suitable than He-3 for an ultra-clean nuke?

David, you seem to have a pretty good physics background. Have you done this stuff for a living?

Gary