[ RadSafe ] protraction enhancement effect

Jerry Cohen jjc105 at yahoo.com
Wed Sep 1 13:13:24 CDT 2010

Does this mean that if I receive a 500 rem dose in one minute. it is not as 
serious as if I received the same dose uniformly over  50 years?

From: Otto G. Raabe <ograabe at ucdavis.edu>
To: The International Radiation Protection (Health Physics) Mailing List 
<radsafe at agni.phys.iit.edu>
Sent: Wed, September 1, 2010 9:44:07 AM
Subject: Re: [ RadSafe ] protraction enhancement  effect

At 11:27 AM 8/31/2010, Brennan, Mike  (DOH) wrote:
> Has anyone heard of "protraction enhancement effect", apparently also called 
>"inverse exposure-rate effect"?  I ran across it in an ICRP document, and I just 
>want to see if other, more knowledgeable people think it means what I think it 
September 1, 2010

The inverse dose-rate effect and its low-dose-rate limitations are explained in 
my March HPJ paper:  Health Physics 98: 515-536; 2010.

If you want a reprint please contact me.


Prof. Otto G. Raabe, Ph.D., CHP
Center for Health & the Environment
University of California
One Shields Avenue
Davis, CA 95616
E-Mail: ograabe at ucdavis.edu
Phone: (530) 752-7754   FAX: (530) 758-6140
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