fast neutron


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fast neutron

[¦fast ′nü‚trän]
(nucleonics)
A neutron having energy much greater than some arbitrary lower limit (that may be only a few thousand electronvolts).
References in periodicals archive ?
16]N reaction [7] to detect fast neutrons with energies [E.
The growth of activity in a target under irradiation increases exponentially and reaches a saturation value limited by the fast neutron flux for a given weight of the Zr (A=90 and 96) target elements.
Power units with fast neutron reactors, or simply fast reactors, can significantly expand the fuel base of nuclear energy and minimize nuclear waste due to a closed nuclear fuel cycle.
Next, fast neutron reactors burn the plutonium to breed uranium-233 from thorium.
Xinhua quoted Xu Mi, chief expert for the experimental fast neutron reactor, saying, "The fast neutron reactor is a major type of fourth-generation nuclear power plant.
As fast neutrons are desired, no moderator is necessary in this type of reactor.
To produce such fast neutrons we allow a fast moving proton obtained through an accelerator with energy 1GeV to hit the as a target.
Some specific topics examined include structure and chemistry of zircaloy-2, a model for predicting oxidation kinetics of zirconium alloys in pressurized water reactors, deformation anisotropy of annealed zircalloy-2 as a function of fast neutron fluence, and a cladding tube deformation test for stress reorientation of hydrides.
If a search technology based on shape matching still seems a bit low-tech, consider Pulsed Fast Neutron Analysis, which can reveal the molecular composition of a load of cargo without opening its vehicle.
The draft also cites ''innovative nuclear power systems based on closed nuclear fuel cycle with fast neutron reactors and international fuel centers'' as a ''virtually inexhaustible energy source'' in the future.
Thus we believe that a large fraction of the current backgrounds arises from fast neutron interactions that can be further reduced with additional amounts of hydrogenous materials.
The system will use pulsed fast neutron analysis to inspect the cargo, according to Joseph Gotto of the Transportation Systems Laboratory.