[NukeNet] Fw: [no-new-nukes-yall] Re: More on PU Shortage and NASAMissions

[theroyprocess at cox.net]

To: Nukenet,
All plutonium is man-made. The reason for nuclear power plants 
is to make Pu 239 for the war heads of atom bombs. The trick 
was to make you pay for your own doomsday! You can denature 
Pu 239 to Pu 238 then Pu 237....it becomes uranium class...
until it is non-radioactive lead.

Using the Roy Process to reduce Pu 239 to zero radioactivity
also produces heat, which makes steam, then electricity. Just 
like a nuclear power plant. The Roy Process is essentially 
backwards engineering.

Regards,
Dennis. F. Nester


NukeNet Anti-Nuclear Network (nukenet at energyjustice.net)




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I appreciate this critical clarification, Roger, Jack and Jeanine. - Kay

From: Felice & Jack Cohen-Joppa <nukeresister at igc.org> 
Sender: no-new-nukes-yall at yahoogroups.com 
Mailing-List: list no-new-nukes-yall at yahoogroups.com; contact no-new-nukes-yall-owner at yahoogroups.com 
Date: Sun, 9 Mar 2008 21:29:02 -0700 
X-ASG-Orig-Subj: [no-new-nukes-yall] Re: More on PU Shortage and NASA  Missions 


Just for the sake of clarity, the Pu-238 used for thermoelectric generators is not the isotope used in weapons, and in fact is uncommon among the Pu isotopes, as it is not among the isotopes in waste from nuclear reactors and is cumbersome to produce and isolate:  following is from the Wikipedia page:
http://en.wikipedia.org/wiki/Plutonium-238

"Plutonium 238, is a radioactive isotope of plutonium with a half-life of 87.7 years and is a very powerful alpha emitter. Because of its high level of alpha activity, it is used for radioisotope thermoelectric generators and radioisotope heater units. The use of plutonium-238 in American and Russian (and old Soviet Union) spacecraft is somewhat controversial.

"Plutonium-238 was the first isotope of plutonium to be discovered. It was synthesized by Glenn Seaborg and associates in 1941 by bombarding uranium-238 with deuterons. Neptunium-238 is made as an intermediate product, which then decays to form plutonium-238. Plutonium-238 decays to Uranium-234 and then further along the radium series to Lead-206.

"Today, Plutonium 238 is usually prepared by the irradiation of neptunium 237, a minor actinide produced in nuclear reactors, that can be recovered from spent nuclear fuel during reprocessing, or by the irradiation of americium in a reactor. In both cases, the targets are subjected to a chemical treatment, including dissolution in nitric acid to extract the plutonium-238. A 100kg sample of light water reactor fuel that has been irradiated for three years contains only about 700 grams of neptunium 237, and the neptunium must be extracted selectively.
"The United States currently has limited facilities to produce plutonium-238. Since 1993, the U.S. has purchased all of the plutonium-238 it has used in space probes from Russia. 16.5 kilograms total have been purchased.[1]"

Jack




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