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Steps Toward Measurement of 135Cs with AMS at CIAE

Published online by Cambridge University Press:  18 May 2017

Xinyi Yin*
Affiliation:
China Institute of Atomic Energy, Beijing 102413, People’s Republic of China
Ming He
Affiliation:
China Institute of Atomic Energy, Beijing 102413, People’s Republic of China
Kejun Dong
Affiliation:
China Institute of Atomic Energy, Beijing 102413, People’s Republic of China
Yijun Pang
Affiliation:
China Institute of Atomic Energy, Beijing 102413, People’s Republic of China
Shaoyong Wu
Affiliation:
China Institute of Atomic Energy, Beijing 102413, People’s Republic of China
Shan Jiang*
Affiliation:
China Institute of Atomic Energy, Beijing 102413, People’s Republic of China
*
*Corresponding author. Email: [email protected].
Corresponding author. Email: [email protected].

Abstract

135Cs with a half-life of T1/2=2.3×106 yr is an important nuclide in studies of the dispersal of nuclear material in the environment. Preliminary measurements using 133Cs as a proxy for the long-lived 135Cs, with accelerator mass spectrometry (AMS) have been developed at the China Institute of Atomic Energy (CIAE). In order to improve the sensitivity of 135Cs AMS measurement, a new conducting material, Fe powder, was used in the experiment. According to the present results, the background level that can be obtained with blanks was 135Ba/Cs~1.83×10–10 with the CIAE-AMS system. These measurements showed that the Fe was an inferior conducting medium because the interference of 135Ba in Fe powder is 10 times higher than that in Ag powder.

Type
Advances in Physical Measurement Techniques
Copyright
© 2017 by the Arizona Board of Regents on behalf of the University of Arizona 

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Footnotes

Selected Papers from the 2015 Radiocarbon Conference, Dakar, Senegal, 16–20 November 2015

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