Re: Bond...Victor Bond

[muckerheide <muckerheide@attbi.com>]

Good memory Mark. I can't put my cursor on a copy of a later Bond paper that

summarized his thesis, but John Cameron summarized Bond's thesis as follows

(1998):



"Damage to tissue is primarily related to the energy absorbed. It is known

that the lethal dose for 50% of the people (LD-50) is about 5 Gy to the

whole body. Assume a 70 kg person, the energy absorbed is 5 J/kg or 350 J.

The energy necessary to cause one cancer in a large group of exposed people

is about 3500 J (no one of which received more than 0.5 J). That is, to kill

a person by inducing a fatal cancer requires ten times as much energy as to

kill one person outright from other types of radiation damage. This is

discussed in NCRP Lecture No. 15 by Victor Bond 'When is a dose not a dose?'

1991. "



Bond goes on to show that radiation "dose" in terms of "energy/unit mass" is

not valid. When larger populations of animals, etc. are exposed to a given

dose to "improve the statistics," actually the experimenter is adding energy

to the system, whether to more cells, or more people.  Bond shows that

cancers are tightly correlated with total energy imparted, including the

Japanese a-bomb survivors.



Regards, Jim

===========



> From: "Somerville, Mark" <MOS3@PGE.COM>

> Reply-To: "Somerville, Mark" <MOS3@PGE.COM>

> Date: Mon, 8 Apr 2002 07:59:20 -0700

> To: "'RuthWeiner@aol.com'" <RuthWeiner@AOL.COM>, Jack_Earley@RL.GOV,

> info@eic.nu, radsafe@list.vanderbilt.edu

> Subject: Bond...Victor Bond

> 

> I don't remember the details of the paper, but Bond had quite a nice

> demonstration of no excess cancers occurring in a population below a

> particular collective radiation dose and some excess cancers above that

> limit.  I really don't remember more about the paper.

> 

> 

> All,

> The document Ruth is referring to is Lecture #15 of the Lauriston Taylor

> Lecture series in Radiation Protection and Measurements, "When is a Dose Not

> a Dose?", Victor Bond, presented April 3, 1991.  Published by NCRP.

> 

> Mark O. Somerville

> Certified Health Physicist

> Registered Environmental Assessor

> Diablo Canyon Power Plant

> (805) 545-4007 

> mailto: mos3@pge.com

> 

> 



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