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cesium-137 (137Cs)

a radioactive material with a half-life of 30.2 years that is used in radiotherapy as a sealed source of gamma rays intended for application to various malignancies that are treated by brachytherapy. Cesium has replaced radium for such applications. See also brachytherapy.


a chemical element, atomic number 55, atomic weight 132.905, symbol Cs. See Table 6.

a product of atomic fission by explosion or breakdown of a reactor. It is feared as a pollutant because of its very long half-life.
References in periodicals archive ?
The doses contributions from ingested 137Cs 14C and 90Sr were also included to these doses [9].
The calibration of the Victoreen 451P-DE-SI-RYR, the Thermo FH40G-L and the Ludlum 9DP was verified by using one of the National Institute of Standards and Technology (NIST) 137Cs calibration beams.
Uncertainties in dose coefficients from ingestion of 131I, 137Cs, and 90Sr.
Distribution and ratios of 137Cs and K in control and K-treated coconut tree at Bikini Island where nuclear test fallout occurred: effects and implications.
This trial calculation is counted backward from the results of monitoring data of 131I and 137Cs (Caesium) as the total amount of the discharge from the Fukushima Dai-ichi NPS, This results in the value corresponding to Level 7 of INES rating as well.
Fertilidade do solo e redistribuicao de 137Cs em funcao da cobertura vegetal, relevo e classes texturais, em uma microbacia hidrografica do Estado da Paraiba.
Studies on 137Cs transfer in soil-fern system, Journal of Environmental Engineering and Landscape Management 13(3): 97-102.
A Hamamatsu R6427 photomultiplier tube (PMT) was used for recording pulse height spectra with 662 keV gamma rays from a 137Cs source.
Rates and spatial patterns of soil redistribution were measured using the 137Cs technique in a 3.
Transport of 137Cs and 239, 249Pu with ice-rafted debris in the Arctic Ocean.