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Plutonium–gallium–cobalt alloy (PuCoGa 5) is an unconventional superconductor, showing superconductivity below 18.5 K, an order of magnitude higher than the highest between heavy fermion systems, and has large critical current. [46] [50] Plutonium–zirconium alloy can be used as nuclear fuel. [51]
Various oxidation states of plutonium in solution. Plutonium compounds are compounds containing the element plutonium (Pu). At room temperature, pure plutonium is silvery in color but gains a tarnish when oxidized. [1] The element displays four common ionic oxidation states in aqueous solution and one rare one: [2] Pu(III), as Pu 3+ (blue lavender)
Plutonium is a transuranic radioactive chemical element, an actinide metal. Actinide chemistry (or actinoid chemistry) is one of the main branches of nuclear chemistry that investigates the processes and molecular systems of the actinides. The actinides derive their name from the group 3 element actinium.
plutonium: 94: 1bc: Has no known biological role, and is extremely rare in the Earth's crust. The isotope plutonium-238 is used as an energy source in some heart pacemakers. [11] Both toxic and radioactive. polonium: 84: 1b: Has no known biological role, and due to its short half-life, is nearly nonexistent outside of research facilities. [11]
"Plutonium is a weird material," said Mike Furlanetto, a lab scientist and the project's director. "We understand it well enough to be confident our [nuclear] stockpile works, but there are a lot ...
To reduce the concentration of Pu-240 in the plutonium produced, weapons program plutonium production reactors (e.g. B Reactor) irradiate the uranium for a far shorter time than is normal for a nuclear power reactor. More precisely, weapons-grade plutonium is obtained from uranium irradiated to a low burnup.
Plutonium in the delta (δ) phase [7] normally exists in the 310 °C to 452 °C range but is stable at room temperature when alloyed with a small percentage of gallium, aluminium, or cerium, enhancing workability and allowing it to be welded in weapons applications. The δ phase has more typical metallic character and is roughly as strong and ...
Plutonium nitride can be prepared by the reaction of plutonium hydrides with nitrogen or ammonia at a temperature of 650 °C and a pressure of 0.3 kPa. [3] Another method to prepare plutonium nitride is from the reduction of plutonium(III) iodide with sodium in liquid ammonia: PuI 3 + NH 3 + 3Na → PuN + 3NaI
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