jamesr wrote:
… The decay time is 1ps not 12s ie. pretty instantaneous.
The low energy gammas do need some additional shielding, but a steel water tank plus a few inches of lead, or a foot of high density concrete should be sufficient.
Oops, missed the caret^ in your original statement! :red:
Yeah, I’d say picoseconds are “pretty instantaneous”! :cheese:
