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Measurement of the Pb-211 half-life using recoil atoms from Rn-219 decay.

Aitkin-Smith, P M*; Collins, S M (2016) Measurement of the Pb-211 half-life using recoil atoms from Rn-219 decay. Appl. Radiat. Isot., 110. pp. 59-63.

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Abstract

The radioactive half-life of 211Pb was measured, by alpha-particle
counting of samples of radiochemically pure 211Pb in equilibrium with its
alpha-emitting progeny, 211Bi and 211Po. The samples were prepared by the
collection of 215Po recoil atoms from the decay of the 219Rn decay progeny
produced from a 223Ra sample onto stainless steel discs. The radioactive decay of the 211Pb was measured utilising a 2pi proportional counter operating on the alpha plateau. A half-life of 36.165 (20) min was determined, which is in agreement with currently available literature. A full uncertainty budget is presented. A recommended half-life of T1/2(211Pb) = 36.161 (21) min has been evaluated from the current literature values.

Item Type: Article
Keywords: Pb-211, Radioactivity, Half-life, Nuclear data, Proprtional counting
Subjects: Ionising Radiation
Ionising Radiation > Radioactivity
Identification number/DOI: 10.1016/j.apradiso.2016.01.004
Last Modified: 02 Feb 2018 13:13
URI: http://eprintspublications.npl.co.uk/id/eprint/7064

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