fast neutron reactor in a sentence

By mid-century fast neutron reactors are seen as the main nuclear power technology which allows much more efficient use of fuel resources.
My question is whether fast neutron reactors would act differently in this regard, in terms of becoming supercritical with a fast neutron chain reaction.
A "'fast neutron reactor "'or simply a "'fast reactor "'is a category of nuclear reactor in which the fission chain reaction is sustained by fast neutrons.
In the proposed water-cooled supercritical water reactor ( SCWR ), the proportion of fast fissions may exceed 50 %, making it technically a fast neutron reactor.
"' Original "'- The fast breeder or fast breeder reactor ( FBR ) is a fast neutron reactor designed to breed fuel by producing more fissile material than it consumes.

Little or no 135 Xe will be destroyed by neutron capture after a reactor shutdown, or in a molten salt reactor that continuously removes xenon from its fuel, a fast neutron reactor, or a nuclear weapon.
HEU is also used in fast neutron reactors, whose cores require about 20 % or more of fissile material, as well as in naval reactors, where it often contains at least 50 % 235 U, but typically does not exceed 90 %.
Hence if MOX is used in a thermal reactor such as a boiling water reactor ( BWR ) or pressurized water reactor ( PWR ) then more americium can be expected in the used fuel than that from a fast neutron reactor.
They concern the construction of the first super-high-voltage electricity transmission line in China; the development of an experimental fast neutron reactor; geological prospecting in the Russian Federation and China; and joint research in optics, metal processing, hydraulics, aerodynamics and solid fuel cells.
The design concept of using thermal expansion to stabilize a reactor core has since been featured in other reactor designs, notably in the pebble bed reactor which is however neither a fast neutron reactor nor a breeder reactor, and in subsequent Fast breeder reactors.

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