Researching this I think they are things that would facilitate setting off regular charges simultaneously - I doubt they would be precise enough for anything nuclear.

Edit: That said, I did not know nukes could be as small as you state.

https://www.britannica.com/technology/nuclear-weapon/Gun-assembly-implosion-and-boosting

"An implosion fission weapon with an explosive yield of one kiloton can be constructed with as little as 1 to 2 kg (2.2 to 4.4 pounds) of plutonium or with about 5 to 10 kg (11 to 22 pounds) of highly enriched uranium."

1 kg of Pu would take up about 50cc. A moped engine cylinder.

Edit 2: However, 1 kt nuclear explosions would been noticed, not just cut beams. I don't know how small a device could be made and still have critical mass. All this having been said, I don't see how anyone would go thru all this when conventional explosives would do the job just fine.

Researching this I think they are things that would facilitate setting off regular charges simultaneously - I doubt they would be precise enough for anything nuclear.

Edit: That said, I did not know nukes could be as small as you state.

https://www.britannica.com/technology/nuclear-weapon/Gun-assembly-implosion-and-boosting

"An implosion fission weapon with an explosive yield of one kiloton can be constructed with as little as 1 to 2 kg (2.2 to 4.4 pounds) of plutonium or with about 5 to 10 kg (11 to 22 pounds) of highly enriched uranium."

1 kg of Pu would take up about 50cc. A moped engine cylinder.

Researching this I think they are things that would facilitate setting off regular charges simultaneously - I doubt they would be precise enough for anything nuclear.