[ RadSafe ] Po-210 in the news

Steven Dapra sjd at swcp.com
Fri Jul 6 20:23:54 CDT 2012

July 6

         I did the exercise.  It's 21 half-lives.  After that many 
half-lives wouldn't a radionuclide be somewhat difficult to 
detect?  By my reckoning, that's 0.477 x 10 -6 parts remaining.

Steven Dapra

At 09:50 AM 7/6/2012, you wrote:
>The fraction of any polonium-210 (138-day half-life) left on 
>clothing or other personal belongings from that allegedly given to 
>Yasser Arafat, who died eight years ago, is left as an exercise for 
>the reader.   This does not include any "salting the mine."
>Rick Strickert
>Austin, TX

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