You can buy it here - they have it i stock. This is a highly reputable supplier, and you can putchase any desired isotope of Pu. http://www.ornl.gov/sci/isotopes/r_pu239.html
The simple answer here is "No. There is no legitimate way for you to get plutonium. You don't need it, or want it, for a reactor. If you're serious, I hope someone is watching you; if you aren't, stop now."
There are some gags which can get the joker in serious trouble before they can explain their way out. This is one. Given the current "security theater" climate in the US, which is getting to the point where it's arguably causing law enforcement to commit civil rights violations, I _really_ wouldn't risk this one right now.
Sorry to be a wet blanket. Feel free to ignore me. But I felt someone had to make this clear.
You also caught me on a day when I was already grumpy for other reasons. Apologies. I *did* consider whether or not to send that answer for a good long time, but in the end decided to push the button.
Besides, if you're playing with this sort of stuff, you really shouldn't be surprised if something -- or someone -- explodes.
Weapons-grade plutonium is a crappy reactor fuel. You can use a mixture of U-235 and Pu-238 (not the weapons material), in a so-called "mixed oxide" (MOX) fuel pellet.
As for building a reactor, you can do that much more easily with low-enriched uranium with a graphite moderator, which is less difficult to obtain. If you had done any research before posting, you would know that.
By the way, if you're trying to shock people, you would do a better job if you got the terminology correct.
See my answer above. 239Pu is a waste product of uranium-reactor operation (and can be harvested during reprocessing). 238Pu is a good fuel for MOX reactors.
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2nd: Wear a bullet proof vest...cause trouble with Libyans has been around since at least 1985
http://www.ornl.gov/sci/isotopes/r_pu239.html
I don't want it, just curious ;)
Why plutonium and why "military-grade"? Do you have a specific design in mind and fuel specification?
L
Which requires mixed fuel and mostly U - I assume you've got a load of Uranuim already?
L
http://www.amazon.com/Images-SI-Inc-Uranium-Ore/dp/B000796XXM/ref=sr_1_7?ie=UTF8&qid=1302573593&sr=8-7
This design is too small to provide much useful power, but it will fit on your desk-top, and uses materials that are reasonably easy to obtain.
Sorry to be a wet blanket. Feel free to ignore me. But I felt someone had to make this clear.
Besides, if you're playing with this sort of stuff, you really shouldn't be surprised if something -- or someone -- explodes.
They might be able to help you Here.
www.russianarmysurplus.com/
As for building a reactor, you can do that much more easily with low-enriched uranium with a graphite moderator, which is less difficult to obtain. If you had done any research before posting, you would know that.
By the way, if you're trying to shock people, you would do a better job if you got the terminology correct.
I believe they guard and regulate that stuff kinda strictly.
You can probably filter some out of the sand at the beach in Japan if you're careful.