Date: Thu, 11 Nov 1999 09:57:32 -0500

Author: Melinda Keller

Subject: Re: Unknown Source


We have some of those. They came with our Nuclear Chicago 1613A
Classmaster counters, purchased in the 1960's. According to the manual,
they contain radium.


Andy Smith wrote:

> Hello Tap-L, quick question: I have two button gamma sources that
> have been around here awhile. The are marked Nuclear A and Nuclear B.
> Must have been "unknowns" for analysis. Anyone have these and know
> what they are? Thanks, -Andy Andy Smith
> Physics Lab Supervisor
> DePauw University
> Greencastle , IN

Melinda Keller
Department of Physics
Oberlin College
Oberlin, OH 44074

phone: (440) 775-8339
fax: (440) 775-6379