[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
We have observed Pu-238 "resuspending" at a rate far in excess of published
values. I was not able to find anything in literature, (although that is
not to say that there is nothing there!) Fleisher and (Otto) Raabe did some
work in the 70's and 80's on alpha recoil damage and fragmentation of PuO2
in fluids, but the particles they observed were too small to be the
operationally observed phenomena we've experienced.
I have personally observed a 50k dpm (alpha) particle "disappearing",
while waiting for someone to bring me a piece of tape. Kinda like a flea.
Electrostatic charge build-up/discharge, heating, physical recoil or alpha
recoil effects alone do not explain this, and there are specifics that
further contradict each of these mechanisms, but that gets into more detail
than I care to type. I have begun an experiment that may begin to
elucidate mechanisms, but I'm pretty pessimistic about results.
I have also heard of this phenomena with Po-210, but haven't seen any
literature on it either.
Los Alamos National Laboratory
Plutonium Facility Operational Health Physics Group