Re: Tokaimura doses

[Susan Gawarecki <loc@icx.net>]

Did they test "control" coins also?  Is there any Zn-65 content in the
average non-irradiated 5-yen coin?

Jim Dukelow wrote:

> They collected 5-yen coins (with 37% zinc content) from various 
> locations around the Tokaimura facility and measured the Zn-65 resulting 
> from neutron irradiation of the coins.  Inferred neutron doses to the 
> coins were calculated using the transport codes DOT and MORSE and 
> converted to ambient dose equivalents (mSv) of 220mSv at 100 meters, 6 
> mSv at 350 meters, and 1.8 mSv at 550m. 
> 
> Now, I'm not so sure that doses and contamination were trivial.

-- 
.....................................................
Susan L. Gawarecki, Ph.D., Executive Director
Oak Ridge Reservation Local Oversight Committee
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