RE: red abalone shells research

[John Jacobus <crispy_bird@YAHOO.COM>]

Another reference is NCRP Report No. 81 "Carbon-14 in

the Environment."



--- "Falo, Gerald A Dr HMJF" <Jerry.Falo@us.army.mil>

wrote:

> 

> All,

> 

> According to The Effects of Nuclear Weapons,

> compiled and edited by Samuel

> Glasstone and Philip Dolan, on page 608 (Sections

> 12.197-12.199): "Carbon-14

> is not strictly a component of fallout, but it is

> convenient to consider

> here since it is formed by the action of fast

> neutrons, e.g. from a

> thermonuclear weapon on nitrogen in the atmosphere."

> (Section 12.197); and,

> "As a consequence of testing thermonuclear weapons,

> starting in 1952, there

> has been a large increase in the quantity of

> carbon-14 in the atmosphere,

> particularly in the stratosphere." The text goes on

> to say that although

> C-14 concentrations are decreasing much of the

> amount in the stratosphere

> "will find its way into the lower part of the

> atmosphere (troposphere)." In

> Section 12.199 the text states, "The whole-body dose

> from carbon-14 in

> nature before 1952 was somewhat less than 1 mrem per

> annum. By 1964, this

> dose had been roughly doubled by the additional

> carbon-14 arising from

> nuclear tests in the atmosphere. If there are no

> substantial additions, the

> dose will decrease gradually and approach normal in

> another 100 years or

> so."  It also says that that dose from strontium-90

> is greater than that

> from carbon-14.

> 

> Also, and the mass spectroscopists can answer better

> than I, isn't

> accelerator mass spectrometry useful for measuring

> C-14 in samples?

> 

> Sincerely,

> Jerry Falo

> 

> The statements and opinions expressed herein are my

> responsibility; no one

> else (certainly not my employer) is responsible, but

> I still reserve the

> right to make mistakes.

>  

> Check core temperature: yes./no? Yes! - Homer

> Simpson

>  

>  

> Gerald A. Falo, Ph.D., CHP

> Henry M. Jackson Foundation for the Advancement of

> Military Medicine

> U.S. Army Center for Health Promotion and Preventive

> Medicine

> jerry.falo@us.army.mil

> 410-436-4852

>  

> . . .



=====

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

"We cannot escape danger, or the fear of danger, by crawling into bed and pulling the covers over our heads."

-- Franklin Delano Roosevelt



-- John

John Jacobus, MS

Certified Health Physicist

e-mail:  crispy_bird@yahoo.com





	

		

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