caesium


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Related to caesium: caesium 137

caesium

See cesium.

ce·si·um

(Cs) (sē'zē-ŭm)
A metallic element, atomic no. 55, atomic wt. 132.90543; a member of the alkali metal group. 137Cs (half-life equal to 30.1 years) is used in treatment of certain malignancies.
Synonym(s): caesium.
[L. caesius, bluish gray]

ce·si·um

(Cs) (sē'zē-ŭm)
A metallic element used in treatment of some malignancies.
Synonym(s): caesium.
[L. caesius, bluish gray]

caesium

cesium.
References in periodicals archive ?
Regulation 737/90/EEC of March 22, 1990 on conditions for importing agricultural produce from third countries following the accident at the Chernobyl nuclear power station, sets maximum radioactive caesium tolerances for farm produce from third countries destined for human consumption, with compliance subject to controls by the Member States.
1) A geographic map can be found in: Atlas of caesium deposition on Europe after the Chernobyl accident, Luxembourg, Office for Official Publications of the European Communities, 1998, EUR 16733, ISBN 92-828-3140-X
The improvements that we report in our paper have reduced significantly the caesium fountain clock's two largest sources of measurement uncertainties-Doppler shifts and the microwave-lensing frequency shift," said NPL Project Leader Krzysztof Szymaniec.
This time has now been considerably reduced with the aid of a new method developed at the Physikalisch-Technische Bundesanstalt (PTB), which makes the output frequency of the caesium fountains more stable.