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RE: gamma ray cascades



Tom



I recommend you use one of the editions of Lederer et al "Table of

Isotopes". The one I like most is the old 1967 Sixth Edition; John Wiley &

Sons because it is more compact and has everything that I usually need. I

think the latest one is 1999 Ninth Edition; also Wiley?.



John

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-----Original Message-----

From: owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu]On Behalf Of Tom Hazlett

Sent: February 2, 2004 8:13 AM

To: radsafe@list.vanderbilt.edu

Subject: gamma ray cascades





Radsafers,

My team is working on dose instrumentation.   We are experiencing some

difficulty in finding a refference (hopefully a list) of isotopes that

produce gamma ray cascades.   What I mean is isotopes that emit several

energies at the same time. The problem this causes is that we see false

high energy events when two or more lower energy photons are summed at

the detector and that causes errors in the dose estimation.



Tom Hazlett

XRF Corporation



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