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This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. ... Per-kilogram prices of some synthetic ...
The presence of the isotope plutonium-240 in a sample limits its nuclear bomb potential, as 240 Pu has a relatively high spontaneous fission rate (~440 fissions per second per gram; over 1,000 neutrons per second per gram), [22] raising the background neutron levels and thus increasing the risk of predetonation. [23]
The density of plutonium-238 at room temperature is about 19.8 g/cc. [3] The material will generate about 0.57 watts per gram of 238 Pu. [4] The bare sphere critical mass of metallic plutonium-238 is not precisely known, but its calculated range is between 9.04 and 10.07 kilograms. [5]
For instance, 3.6 kg of plutonium-238 undergoes the same number of radioactive decays per second as 1 tonne of plutonium-239. Since the morbidity of the two isotopes in terms of absorbed radioactivity is almost exactly the same, [58] plutonium-238 is around 275 times more toxic by weight than plutonium-239.
The New Mexico Administrative Code sets an unenforceable guideline of 1.5 picocuries of plutonium per liter of water in the Rio Grande, and water samples from the early 2010s near the Buckman ...
Plutonium-239 is the primary fissile isotope used for the production of nuclear weapons, although uranium-235 is also used for that purpose. Plutonium-239 is also one of the three main isotopes demonstrated usable as fuel in thermal spectrum nuclear reactors, along with uranium-235 and uranium-233. Plutonium-239 has a half-life of 24,110 years. [1]
Letters to the editor on the history of plutonium, Project 2025, ageism on the Benton Commission, Trump, syphilis, drug laws and Hanford. | Opinion
The environmental management field office pointed to a 2018 DOE study that estimated the radiation dose to a person who might recreate in the canyon is less than 0.1 millirem per year.