How to build a Nuclear Pistol?

I came across the design of a nuclear pistol from a deviantart artist, shown here:

I want to know if this can actually be built.

My additions:

The "egg" needs not be uranium, which has a huge critical mass, and can use another material with less critical mass such as californium or americium. There is no care about how much are made. Assume that there is enough for one egg.

Also, the fusion battery can be replaced with a nanobattery, a quantum battery or a lithium-air battery, whichever is most portable.

The gun is also laced with Starlite to ensure that it does not melt.

The only problem I am seeing is how the radiation beam is produced in the first place, which I now seek help with.

posted about 5 years ago

CYCLOPSCORE‭

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