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RE: query
Rodney, et. al.,
>From NCRP 118, the following radioactivity can be found in the mining
extraction of zirconium
4 Bq U/g sand
0.6 Bq Th/g sand
4-7 Bq Ra/gm sand
Your analysis looks good to me.
-- John
John Jacobus, MS
Certified Health Physicist
3050 Traymore Lane
Bowie, MD 20715-2024
E-mail: jenday1@email.msn.com (H)
-----Original Message-----
From: Bauman, Rodney L. (84U) [mailto:84u@BECHTELJACOBS.ORG]
Sent: Friday, August 24, 2001 8:53 AM
To: radsafe@list.vanderbilt.edu
Subject: RE: query
Here's my guess (nobody laugh - it's been a while since I've done this type
of stuff):
Natural Th-232
The 236 keV peak is from daughter Pb-212 (239 keV at 47%)
The 339 keV peak is from daughter Ac-228 (338 keV at 15%)
The 584 keV peak is from daughter Tl-208 (583 keV at 86%)
This is glass, so it's not surprising that Rn-220 daughters' fingerprints
are present.
Rodney Bauman, CHP, RRPT
Bechtel Jacobs Company, LLC
Project Health Physicist
ETTP and Y-12 Waste Operations
Y-12 Plant Bldg. 9624, MS 8222
Voice: 865.241.5344
Pager: 865.417.0561
Fax: 865.576.3946
84u@bechteljacobs.org
> -----Original Message-----
> From: D J Hornsey [SMTP:bssdjh@BATH.AC.UK]
> Sent: Friday, August 24, 2001 7:03 AM
> To: radsafe@list.vanderbilt.edu
> Subject: query
>
>
> Dear Radsafers,
> Our Physics department is having a spring clean, and in a
> batch of samples for disposal was a radioactive one labelled Zirconium
> Fluoride glass. A gamma spec. of the sample revealed a major peak at 236
> keV and minor ones at 73, 339 and 584 keV. Now someone out there may be
> able to immediately identify what this sample contains, but if not, can
> anyone direct me to a web site with a search engine whereby I can type in
> the energies and a list of possibilities will be revealed. I have tried
> Oak Ridge's list gamma emitters, but close ones turn out be short
> half-life examples and the sample must be several years old. Any help
> would be greatly appreciated.
>
> David
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