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Half-life of Ra-228

To: "'radsafe@romulus.ehs.uiuc.edu'" <radsafe@romulus.ehs.uiuc.edu>
Subject: Half-life of Ra-228
From: "Koperski, George" <george.koperski@iluka.com>
Date: Tue, 14 Sep 1999 17:05:03 +0800
Return-Receipt-To: "Koperski, George" <george.koperski@iluka.com>

Dear Radsafers

What is the correct value of the half-life for Ra-228 ?
I have been consistently encountering two values: 5.75 years  and 6.7 years.
Which one is right ? Thank you

george.koperski@iluka.com
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