Heavy water is used in nuclear reactors as moderator for neutrons.
Uranium. A breeder reactor can use either Uranium, Plutonium, or mixed Transuranic elements for fuel. Depleted Uranium or Thorium is used as the breeding blanket. Periodically the breeding blanket is changed: the old one reprocessed to make new fuel.
In the reaction238U + n-------239U-------239Np + e--------239Pu + eone atom of uranium become one atom of plutonium.
Uranium
A very small amount of plutonium is found in nature. The majority of it is produced artificially.The majority of plutonium is made in nuclear reactors:uranium-238 captures a neutron, becoming uranium-239uranium-239 undergoes beta decay, becoming neptunium-239 (halflife 23.5 minutes)neptunium-239 undergoes beta decay, becoming plutonium-239 (halflife 2.33 days)plutonium is then chemically separated from the remaining uranium, neptunium, etc.
Yes, the government uses uranium. Uranium is mined, refined and then enriched to provide nuclear fuel for nuclear reactors. Depleted uranium, the uranium "left over" from enrichment, is used in munitions to defeat armor, and in some types of armor. On a related note, enriched uranium is in demand by some sovern states and religeous/political factions to make nuclear weapons, though the "modern" nuclear powers use plutonium as the fissionable element in their nuclear devices. The plutonium is made by "soaking" uranium in the neutron flux of an operating nuclear reactor for a time. This changes (transmutes) some of the uranium to plutonium, which is then recovered and processed.
Nothing special. Atomic bombs can be built with either uranium, plutonium, or composite (plutonium/uranium) cores. All work the same.
The isotope uranium-238 is the source of plutonium.
Uranium. A breeder reactor can use either Uranium, Plutonium, or mixed Transuranic elements for fuel. Depleted Uranium or Thorium is used as the breeding blanket. Periodically the breeding blanket is changed: the old one reprocessed to make new fuel.
In the reaction238U + n-------239U-------239Np + e--------239Pu + eone atom of uranium become one atom of plutonium.
Uranium and plutonium.
Uranium
Both Uranium & Plutonium were used.
There are two materials that can be used to make an atomic bomb: Plutonium-239 and uranium-235. Of the two plutonium-239 is easier to acquire. By the end of the Manhattan Project the U.S. only had enough uranium-235 to make one bomb, and that was Little Boy.
Plutonium made from uranium refinement in a centrifuge
All you do is make the plutonium or uranium more unstable and you have a bigger boom
Plutonium-239 for Nagasaki's Fat Man Uranium-235 for Hiroshima's Little Boyhydrogen
Uranium-235 or Plutonium-239, or Uranium-233. Also many transuranics, like Americium make good fuel.