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. 2016 Mar:109:430-434.
doi: 10.1016/j.apradiso.2015.12.027. Epub 2015 Dec 7.

Development of a low-level (37)Ar calibration standard

R M Williams  1 , C E Aalseth  2 , T W Bowyer  2 , A R Day  2 , E S Fuller  2 , D A Haas  2 , J C Hayes  2 , E W Hoppe  2 , P H Humble  2 , M E Keillor  2 , B D LaFerriere  2 , E K Mace  2 , J I McIntyre  2 , H S Miley  2 , A W Myers  2 , J L Orrell  2 , C T Overman  2 , M E Panisko  2 , A Seifert  2
Affiliations

Development of a low-level (37)Ar calibration standard

R M Williams et al. Appl Radiat Isot. 2016 Mar.

Abstract

Argon-37 is an environmental signature of an underground nuclear explosion. Producing and quantifying low-level (37)Ar standards is an important step in the development of sensitive field measurement instruments. This paper describes progress at Pacific Northwest National Laboratory in developing a process to generate and quantify low-level (37)Ar standards, which can be used to calibrate sensitive field systems at activities consistent with soil background levels. This paper presents a discussion of the measurement analysis, along with assumptions and uncertainty estimates.

Keywords: Absolute radiation measurement; Electroformed copper; Length compensated proportional counting; Ultra low-background; Uncertainty analysis.

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