Reply To: Military Effects

[asymmetric_implosion]

Zap: Your definition seems pretty arbitrary. U-236 is stable in a small fraction of events when a gamma is emitted. If I understand the reaction correctly, C-12 does the same thing in a small fraction of events from p+B-11. The C-12 does not break apart due strictly to energetics. Conservation of momentum is the reason. Can’t conserve momentum in the reaction without a minimum of two particles ejected. If we could avoid two particles, D+D-> He-4 would work and our cold fusion friends would be very happy. 🙂

The definition I’ve run across (Mayo, Intro to Nuclear Concepts for Engineers) is about producing a heavier particle than the initial pieces with a smaller partner (Again momentum conservation). By this definition, p+B-11 is fission. The two products are an alpha and Be-8 which quickly decays by two alpha emission. Fission does not require neutrons. Proton fission is a known quantity. It is terribly inefficient but it does exist with high Z elements. One can choose the banner to carry by shaping the definition for their purpose. I have no problem with fission so I don’t mind calling it fission. I know many on this site don’t share my feelings so they unite under the fusion banner. I find it funny that the unknown of fusion energy is more appealing to some than the known of fission. Fission is far from perfect but we know the problems. Fusion energy is still a mystery and the unknown unknowns are still many.

In the end it doesn’t matter; a nuclear reaction without neutrons is still sweet.