RE: Sr-90 questions

["Stokes, James" <StokesJ@ttnus.com>]

For those people that routinely work with depleted uranium, the energy of
the Sr-90 beta is the closest energy to the Pa-234 beta that comes from
U-238 decay chain. SO that is the isotope that we calibrate the beta
counters with.  At least that was our use for it.  There are also medical
applications of this isotope though.

-----Original Message-----
From: Brian Rees
To: Multiple recipients of list
Sent: 2/23/01 10:01 AM
Subject: Sr-90 questions

For some reason, I've been asked a number of different questions about 
Sr-90 recently.  I've been able to answer them to a certain extent, but
now 
I have questions:

1)	Other than it's abundance as a fission product, it's almost pure
beta 
emission(s) (including Y), and half-life/specific activity, why Sr?
I.e. 
are there other reasons I'm missing?

2)	What are common uses other than ocular devices, instrument
sources, heat 
sources, and de-icing sensors?

Thanks in advance,

Brian Rees
brees@lanl.gov

************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html