Re: Specific gamma-ray dose constant for 137Cs

[John Jacobus <crispy_bird@YAHOO.COM>]

There was a revision to the Unger and Trubey reference

(1981) that appeared in May 1982 due to an error in

the flux-to-dose equivalent factor.  The results were

too high.  They also mention a typographical error in

the Cs-137 values.  The gamma ray constant is listed

as 1.017 E-4.  This is equivalent to the value for

Ba-137m, which is 1.081 E-4.



--- Michael McNaughton <mcnaught@LANL.GOV> wrote:



> I cannot reproduce the specific gamma ray dose

> constant for Cs-137 in the 

> Rad Health Handbook (Table 6.2.2 of the 3rd edition

> or Table 6.1.2 of the 

> 1992 edition). I think it is about 10% too high.

> Could it be that Unger and 

> Trubey forgot about the internal conversion of

> Ba-137m (which happens in 

> 10% of the decays)? I would appreciate any insights.

> 

> mike

> Mike McNaughton

> Los Alamos National Lab.

> email: mcnaught@LANL.gov or mcnaughton@LANL.gov

> phone: 505-667-6130; page: 505-664-7733

> 

>

************************************************************************

> You are currently subscribed to the Radsafe mailing

> list. To

> unsubscribe, send an e-mail to

> Majordomo@list.vanderbilt.edu  Put the

> text "unsubscribe radsafe" (no quote marks) in the

> body of the e-mail,

> with no subject line. You can view the Radsafe

> archives at

> http://www.vanderbilt.edu/radsafe/

> 

> 





=====

+++++++++++++++++++

"That government is the strongest of which every man feels himself a part."

Thomas Jefferson



-- John

John Jacobus, MS

Certified Health Physicist

e-mail:  crispy_bird@yahoo.com





		

__________________________________ 

Do you Yahoo!? 

Check out the new Yahoo! Front Page. 

www.yahoo.com 

 



************************************************************************

You are currently subscribed to the Radsafe mailing list. To

unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu  Put the

text "unsubscribe radsafe" (no quote marks) in the body of the e-mail,

with no subject line. You can view the Radsafe archives at

http://www.vanderbilt.edu/radsafe/