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Roblox (/ ˈ r oʊ b l ɒ k s / ⓘ, ROH-bloks) is an online game platform and game creation system developed by Roblox Corporation that allows users to program and play games created by themselves or other users.
Plutonium(IV) oxide, or plutonia, is a chemical compound with the formula Pu O 2. This high melting-point solid is a principal compound of plutonium . It can vary in color from yellow to olive green, depending on the particle size, temperature and method of production.
The agreement regulates the conversion of non-essential plutonium into mixed oxide (MOX) fuel used to produce electricity. [2] Both sides were required to render 34 tons of weapons grade plutonium, into reactor grade plutonium alongside reaching the spent fuel standard, that is mixed with the other more highly irradiating products within spent ...
PUREX (plutonium uranium reduction extraction) is a chemical method used to purify fuel for nuclear reactors or nuclear weapons. [7] PUREX is the de facto standard aqueous nuclear reprocessing method for the recovery of uranium and plutonium from used nuclear fuel ( spent nuclear fuel , or irradiated nuclear fuel).
A comparison of the activity associated to U-233 for three different SNF types can be seen in the figure on the top right. The burnt fuels are Thorium with Reactor-Grade Plutonium (RGPu), Thorium with Weapons-Grade Plutonium (WGPu) and Mixed Oxide fuel (MOX, no thorium). For RGPu and WGPu, the initial amount of U-233 and its decay around a ...
Plutonium-238 was the first isotope of plutonium to be discovered. It was synthesized by Glenn Seaborg and associates in December 1940 by bombarding uranium-238 with deuterons, creating neptunium-238. 238 92 U + 2 1 H → 238 93 Np + 2 n. The neptunium isotope then undergoes β − decay to plutonium-238, with a half-life of 2.12 days: [6] 238 ...
For example, producing 1 kilogram (2.2 lb) of 5% enriched uranium requires 11.8 kilograms (26 lb) of natural uranium, and leaves about 10.8 kilograms (24 lb) of depleted uranium having only 0.3% 235 U. Depleted uranium is further produced by recycling spent nuclear fuel, [21] in which case it contains traces of neptunium and plutonium. [22]
This produced the Mark 54 mod 0 and Mark 54 Mod 2 warheads for Falcon and Davy Crockett use respectively, which were only distinguishable by the environmental sensing device employed. Later, the Special Atomic Demolition Munition ( SADM – sometimes designated the B54 ) was developed and saw service between 1964 and 1989.