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Re: Natural U check source



        Peter 

       Would a lapidary rock/shop be out of the question?

        Joel




At 02:29 PM 3/7/97 -0600, you wrote:
>Does anyone know of a good source (no pun intended) for a natural U check
source 
>to be used for calibrating instruments for detecting alpha particles on
wipes?  
>We have an Eberline SPA-1A and need a calibration source before doing some 
>swipe tests for loose alpha contamination.  The source should be no larger
than 
>25 mm diameter by 1.5 mm in thickness.  Active area should be 16 mm in
diameter 
>or larger.  We want to use natural U since that is what we will be looking for 
>in the actual situation.
>
>Any assistance would be appreciated.  Haven't had any luck with Eberline or 
>their supplier.
>
>*************************************
>Regards,
>Peter J. Fundarek
>University of Toronto
>CANADA
>email:  p.fundarek@utoronto.ca
>phone:  (416) 978-2374
>fax:  (416) 971-1384
>*************************************
>
>
>
>
>
Joel T. Baumbaugh (baumbaug@nosc.mil)
Naval Research and Development (NRaD)
San Diego, CA., U.S.A.