RE: query

["Bauman, Rodney L. (84U) " <84u@BECHTELJACOBS.ORG>]

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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