3 ms·
> Somewhere between known incidents with 6.2 kg of plutonium and nothing happened incidents with some sticks there’s a point at which something could happen. Y
by credit_guy 4y ago
> Somewhere between known incidents with 6.2 kg of plutonium and nothing happened incidents with some sticks there’s a point at which something could happen.
Yes, but that somewhere is an epsilon below the demon core. How do I know? All nuclear bombs have a core, that's more or less the size of the Demon Core. They don't go critical until they need to.
Here [1] is a photo of scientist holding a plutonium pit with nothing but gloved hands. He is smiling. He does not look like someone thinking that the likelihood of a criticality event is all that high.
Now take another look at the few sticks of plutonium in the photo. Draw your own conclusions.
[1] https://lajicarita.wordpress.com/2012/10/16/cmrr-is-no-more-but-the-pits-go-marching-on/ https://lajicarita.wordpress.com/2012/10/16/cmrr-is-no-more-...
- aledalgrande 4y agoI was curious so I went to check, it seems that the minimum size (as a sphere) for a critical mass of Pu-239 would be around 10cm. https://en.wikipedia.org/wiki/Critical_mass#Critical_mass_of_a_bare_sphere https://en.wikipedia.org/wiki/Critical_mass#Critical_mass_of...
- bombcar 4y agoWasn’t the issue that you can make a core just below critical and shove it above critical by wrapping it in reflectors?