Something like a Godiva device (pulsed nuclear reactor)? https://en.wikipedia.org/wiki/Godiva_device https://en.wikipedia.org/wiki/Godiva_device They have a r

Something like a Godiva device (pulsed nuclear reactor)? https://en.wikipedia.org/wiki/Godiva_device https://en.wikipedia.org/wiki/Godiva_device They have a risk of creating a small nuclear explosion though.