Re: Potassium cell study

[Muckerheide <muckerheide@attbi.com>]

on 7/11/02 1:19 AM, peter.thomas@health.gov.au at peter.thomas@health.gov.au

wrote:



> Jim Muckerheide wrote:

> 

> 

> This was answered:  To go further, ORNL removed the heavier 0.02% K-40

> (along with the 6.9% K-41) in the calutrons. (This is easy to do, but not

> cheap, because the low K weight makes a significant diff between 40 and 41

> vs. 39.)  They did this in several campaigns. The last I heard about (not

> confirmed) was a batch for Argonne in the mid-80s (for $75K).

> 

> 

> I'm a bit confused about what is meant by the parenthetical statement about

> the difficulty of K isotope separation in a calutron.  Are you implying

> something about magnetic field restrictions that limit the achieveable

> dispersion Jim?  I would have thought that one would simply dial up an

> appropriate magnetic field to get the required dispersion.

>

> Peter Thomas



Not my intent. Diff = difference?



Meant to say that the separation achieved between 40/41 vs. 39 was great

(vs. Separation of heavy isotopes)



Regards, Jim



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