Mobility and lifetime of 220Rn daughters

Pelczar, Krzysztof

doi:10.1063/1.5019013

Mobility and lifetime of 220Rn daughters

Krzysztof Pelczar

Jan 3, 2018

Part of Proceedings, 6th Topical Workshop on Low Radioactivity Techniques (LRT 2017) : Seoul, Korea, May 24-26, 2017

Published in:

AIP Conf.Proc. 1921 (2018) 1, 090003

Contribution to:

- LRT 2017

Published: Jan 3, 2018

DOI:

10.1063/1.5019013

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Abstract: (AIP)

A method of mobility and ionic lifetime measurement of alpha emitters from the 228Th/220Rn decay chain is presented. The choice of 220Rn chain over 222Rn is based on the fact that the shorter nuclear lifetime of 220Rn and 216Po allows for easy determination of their mobility and ionic lifetime in the setup described, assuming no isotopic impact on the investigated physical properties. A typical mobility of positively charged 216Po measured is on the order of 0.5 cm2 s−1 V−1, while the ionic lifetime is approximately >1 s (and is expected to be much longer for ultra–pure gases).

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