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. 2017 Aug:126:185-187.
doi: 10.1016/j.apradiso.2017.03.001. Epub 2017 Mar 3.

Recent Bremsstrahlung-based assays of 210Pb in lead and comments on current availability of low-background lead in North America

Martin E Keillor  1 , C E Aalseth  2 , I J Arnquist  2 , T A Eggemeyer  2 , E S Fuller  2 , B D Glasgow  2 , E W Hoppe  2 , S M Morley  2 , A W Myers  2 , J L Orrell  2 , C T Overman  2 , A Seifert  2 , S M Shaff  2 , K S Thommasson  2
Affiliations

Recent Bremsstrahlung-based assays of 210Pb in lead and comments on current availability of low-background lead in North America

Martin E Keillor et al. Appl Radiat Isot. 2017 Aug.

Abstract

Low-background lead for radiation measurement shielding is often assayed for 210Pb to ensure acceptable backgrounds. Samples of lead assayed with a germanium spectrometer calibrated for bremsstrahlung-based assay of 210Pb provide a view into the 210Pb content of commercial lead in the U.S. (other than stockpiled Doe Run lead). Results suggest that the loss of lead smelting in the U.S. has eliminated the traditional supply of "low background" lead (~30Bqkg-1), and indicate current commercial supplies contain roughly an order of magnitude higher 210Pb levels.

Keywords: (210)Bi; (210)Pb; Bi-210; Bremsstrahlung; Gamma spectroscopy; Lead; Low background; Pb-210.

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