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Re: Unknown Sealed Sources

To: radsafe@romulus.ehs.uiuc.edu
Subject: Re: Unknown Sealed Sources
From: mikeg@SLAC.Stanford.EDU (Michael P. Grissom)
Date: Wed, 23 Aug 1995 08:09:57 -0700 (PDT)
Date-Warning: Date header was inserted by SERV05.SLAC.STANFORD.EDU

Based on my past experience with Collin's sources, I believe Dave
is right.  However, you should go for a positive radionuclidic
ID just to be sure!

>>We have two sealed sources that are labeled Ra-DE. Does anyone know 
>>what the DE stands for. ...
>>
>Just a guess, but it might be Ra D (Pb-210) and Ra E (Bi-210).  The parent
>half-life is about 20 y.  The other members of the decay chain would add to
>an alpha, but not much to the beta spectrum.
>
>Dave Scherer
>scherer@uiuc.edu
-----------------------
Michael P. Grissom
mikeg@slac.stanford.edu
Phone:  (415) 926-2346
Fax:    (415) 926-3030

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