Re: Ra-226 -> Ra-223

["Wesley M. Dunn" <WDUNN@brc1.tdh.state.tx.us>]

Actually, whomever is still going to need to separate out the Ra-223
from the Ac-227.  So the chemistry is still going to be part of the
equation.  Just a matter whether you start with already "purified"
Radium, or go into the tailings....  It does appear that the
activation cross-section actually is reasonable.


> Date:          Wed, 16 Aug 95 10:27:51 -0500
> Reply-to:      radsafe@romulus.ehs.uiuc.edu
> From:          "Dale E. Boyce" <dale@radpro.uchicago.edu>
> To:            Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
> Subject:       Re: Ra-226 -> Ra-223

> Wes,
>
> I believe that an enterprising chemist might try separating Ac-227
> directly from uranium mill tailings in order to make the Ra-223
> generator.  Activating Radium certainly gets you there with a
> smaller scale chemistry, but it wouldn't surprise me if there isn't
> a lot of Ac-227 setting around at one or another national lab.
> The Bi-212-Pb-212 generators used for the same purpose come from
> Th-228 so separated from Th-232 and residing at Argonne.