Decadal 10Be, 26Al and 36Cl QA measurements on the SUERC 5MV accelerator mass spectrometer

Xu, S., Freeman, S. P.H.T. , Rood, D. H. and Shanks, R. P. (2015) Decadal 10Be, 26Al and 36Cl QA measurements on the SUERC 5MV accelerator mass spectrometer. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 361, pp. 39-42. (doi:10.1016/j.nimb.2015.03.064)

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Abstract

We quantify the routine performance and uncertainties of cosmogenic 10Be, 26Al and 36Cl QA measurements made on the SUERC 5 MV accelerator mass spectrometer since 2004. Our analysis compiles data from primary (NIST SRM4325 for 10Be, Purdue Z92-0222 for 26Al and Purdue Z93-0005 for 36Cl) and secondary (Nishiizumi’s series for 10Be, 26Al and 36Cl) reference samples with 10Be/9Be, 26Al/27Al and 36Cl/Cl ratios ranging between 10−11 and 10−13. Our decadal datasets indicate that the 10Be, 26Al and 36Cl secondary standard samples have average standard deviations 1.1%–2.4%, 1.1%–2.8% and 3.0%–3.1%, respectively. The average statistical uncertainties based on counting statistics are 1.0%–1.8%, 0.9%–2.8% and 2.5%–2.7% for 10Be, 26Al and 36Cl, respectively. These indicate additional uncertainties (0.6%–1.6% for 10Be, 0.5%–2.4% for 26Al and 1.4%–1.7% for 36Cl) above those calculated from counting statistics alone. The average differences between the measured and the nominal values are within ±1% in 13 of 14 secondary samples.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Rood, Dr Dylan and Shanks, Dr Richard and Xu, Dr Sheng and Freeman, Professor Stewart
Authors: Xu, S., Freeman, S. P.H.T., Rood, D. H., and Shanks, R. P.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Publisher:Elsevier
ISSN:0168-583X
ISSN (Online):1872-9584

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