Most reactors use uranium fuel enriched slightly to about 3-4 percent U-235, in the form of uranium dioxide UO2. Some older reactors used metallic natural uranium, while some other reactors use plutonium or a plutonium-uranium mix as fuel.
Plutonium obtained in nuclear reactors with uranium fuels after recycling of the burned fuels can be used also as a nuclear fuel.
Plutonium is obtained by the irradiation of uranium in nuclear reactors; the "burned" nuclear fuels are recycled to extract plutonium.
Radioisotopes for many uses (e.g. medical, industrial, scientific) are produced in nuclear reactors.
In some reactors it is, depends on the design.
The most common coolant used in nuclear reactors is water. There are light water reactors (using "regular" water), and the heavy water kind of reactor.
Uranium and plutonium can be used as nuclear fuels for nuclear reactors.
Plutonium obtained in nuclear reactors with uranium fuels after recycling of the burned fuels can be used also as a nuclear fuel.
Well, as nuclear reactors are nuclear reactors, nuclear reactors are not used inside nuclear reactors.
This is the purpose of nuclear power plants and is very successfully done, 104 reactors in the US for example.
Fabrication of nuclear fuels to generate electricity in nuclear power reactors.
Plutonium is very important for nuclear weapons and for nuclear fuels used in nuclear reactors. But plutonium is also toxic and radioactive. See the link below.
The source of plutonium is the reprocessing of "burned" nuclear reactors fuels.
The word expectation is not adequate; uranium is used as fuel in nuclear power reactors. Nuclear energy is the most important alternative for fossil fuels.
Sintered pellets of uranium dioxide, with natural uranium or low enriched in 235U, are currently used as nuclear fuels to produce electric/thermal energy.
Plutonium is obtained by the irradiation of uranium in nuclear reactors; the "burned" nuclear fuels are recycled to extract plutonium.
Plutonium is very important for nuclear weapons and for nuclear fuels used in nuclear reactors. But plutonium is also toxic and radioactive. See the link below.
Current nuclear reactors rely on nuclear fission as their nuclear reaction.