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Caesium is probably the most important fission product created using the irradiation of nuclear fuel. The relatively high fission yields of the stable and long-lived isotopes of caesium, the low boiling point of caesium and the low dissociation temperature of its oxides, the high gamma-activity of (137)Cs with a half life of 30.7 years, and the high chemical reactivity of caesium dictate that its behaviour is considered in all aspects of the nuclear cycle. In the context of nuclear fuel performance caesium is second in importance only to xenon. Because of its low solubility, generally a high percentage of caesium is released from the fuel grains during a reactor power excursion.

Additional information

Authors: WALKER C T, JRC Karlsruhe (DE);BAGGER C, Risø National Laboratory, Materials Department, Roskilde (DK);MOGENSEN M, Risø National Laboratory, Materials Department, Roskilde (DK)
Bibliographic Reference: Article : Journal of Nuclear Materials (1996)
Record Number: 199610763 / Last updated on: 1996-08-16
Original language: en
Available languages: en
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