fission product


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fission product

[′fish·ən ‚präd·əkt]
(nuclear physics)
Any radioactive or stable nuclide resulting from fission, including both primary fission fragments and their radioactive decay products.
References in periodicals archive ?
(iii) All ATF fuel pellet materials reduce the fuel temperature compared to U[O.sub.2] and can potentially reduce the diffusion rate of fission products into the fuel-clad gap.
That process has been extensively studied, and it does a tremendous job of scrubbing nearly all of the most dangerous fission products from the atmosphere, so that they never get out of the containment building.
The SGTR accident induced by SBO releases more fission products to environment because many safety features such as auxiliary feed water (AFW) are inoperable.
The MELCOR decay heat package models the decay heat power resulting from the radioactive decay of fission products. In the study, the whole decay heat power was set according the CPR1000.
Additional factors that have to be taken into account include how the radioactive elements are distributed (whether uniformly or concentrated in a "sunken layer" at the core-mantle boundary), variations due to radioactive elements in the local geology (in KamLAND's case, less than 10 percent of the expected flux), antineutrinos from fission products, and how neutrinos oscillate as they travel through the crust and mantle.
Topics include extracting radioactive elements by calixarenes, the simultaneous removal of radionuclides by extractant mixtures, the radiolysis of solvents used in nuclear fuel reprocessing, automating extraction chromagraphic and ion-exchange separations for radiochemical analysis and monitoring, and neoteric solvents as the basis for alternative approaches to separating actinides and fission products.
Radiation research in the petroleum sector has been conducted for over five decades with a wide variety of radiation sources explored as potent energy sources including gamma-ray, fission products, electrons and neutrons.
However, Van Uffelen notes "despite promising results for the behaviour of fission products in UO2, and a better understanding of the basic phenomena, it is still too ambitious to conceive a fuel performance code based solely on fundamental computations." This is because of varying demands within the various test techniques regarding temperature, space and time-scale.
In fact, between May 2 and May 8, 1986, the cloud passed over the UK twice, but fission products from the reactor explosion were deposited mainly on those areas where rain had fallen while the cloud was passing over - the northwest of England, North Wales, and south-west Scotland.
It's the U-235 atom that actually splits in two--that's fission, which releases heat and fission products. What is essentially a massed energy conversion, produces a lot of energy, E = M[C.sup.2].
Evaluation of amaranth components and research of the polysaccharide component fermentation to fractional fission products, UTB Zlin 2004.