Predrag Dukic wrote:
How well depleted it really is?
DU has about 1/3 the U235 of natural U, of which less than 1% is U235.
All the isotopes are radioactive, but I don't recall what the relative
activities are. I think U238 has a half live of 4E9 years or more, so
not very many atoms spontaneously disintegrate every second.
Uranium separation is not perfect. Some
radioactivity is still left.
Not much.. you'd have more trouble if you lived on granite or lived in a
brick/stone house.
It's an alpha emitter, too, so painting it would provide shielding.
It's the fact that it's a heavy metal that's more of an issue for toxicity.
Don't know about the neutrons from the spontaneous fission.
I don't think it is healthy to have it beside You for a long time.
Certainly not 80000 pounds :))
At 05:35 11.3.2010, you wrote:
Bob Camp wrote:
Hi
The gotcha is that you are interested in the amount of heat per cubic
foot rather than the amount of heat per pound. You need to take the
standard heat per weight numbers and convert them to heat per volume
numbers.
Of the things you can easily get, copper is good. Steel is not as
good as copper, but better than aluminum.
Bob
Gold is your friend. Mercury has convective losses because it's a
liquid. Platinum or Osmium would also be ok.
You might want something that is dense but lower conductivity.. lead?
Depleted Uranium? (DU is available very cheaply if you can take 80,000
pound lots)
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