Re: UF6

[MCNAUGHT@LANL.GOV (Mike McNaughton)]

>If the daughters he's talking about are protactinium-234 and thorium-234, I
>would think that they could easily be decayed-in-storage. Actually, even if
>they're not the above two (I can't tell if it's U238 or 235 we're talking
>about, except that since we don't make plutonium anymore, I wouldn't think
>it'd be U238), the fact that they ingrow so quickly suggests short halflives,
>doesn't it? Sorry that I don't have decay tables handy.
>
>Chris Alston

Half lives are 24 days for Th-234 and 7 h for Pa-234. But what about the
U-234 (half life 2.5E5 y)? Will this convert back to UF6 or will it stay in
the cylinder in some form that is not volatile?  I assume the latter.