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dc.contributor.authorTheodórsson, Páll
dc.date.accessioned2021-02-11T20:44:06Z
dc.date.available2021-02-11T20:44:06Z
dc.date.issued2005-01-01
dc.identifier.citationTheodórsson, P. (2005). A simple, extremely stable single-tube liquid scintillation system for radiocarbon dating. Radiocarbon, 47(1), 89-97.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S003382220005222X
dc.identifier.urihttp://hdl.handle.net/10150/653520
dc.description.abstractThis paper describes a simple and compact liquid scintillation radiocarbon dating system, ICELS, and demonstrates its long-term stability and reproducibility to a precision level rarely presented before, better than 0.04% (3 14C yr). Inexpensive systems of this kind may, in the future, help to meet increasing demand for high precision (+/16 to +/20 14C yr) and strict quality control. ICELS comprises a compact detector unit, where a 3-mL dome-shaped vial, with an optimal light reflector, sits on the top of a vertical 30-mm photomultiplier tube. Sample changing is manual. The high voltage is set at the balance point for each sample, securing maximal counting stability. The quench correction method used (spectrum restoration) corrects with 0.04% precision for all parameters that can normally shift the 14C spectrum. For 3 mL of benzene at 71% 14C counting efficiency (recent carbon 23 cpm), the background is 1.72 cpm behind a 5-cm-thick shield of lead (27 kg) and 1.53 cpm behind 10 cm of lead. The background count rate corrected for atmospheric pressure variations was completely stable over 47and 57-d testing periods for the 2 systems.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleA Simple, Extremely Stable Single-Tube Liquid Scintillation System for Radiocarbon Dating
dc.typeArticle
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume47
dc.source.issue1
dc.source.beginpage89
dc.source.endpage97
refterms.dateFOA2021-02-11T20:44:06Z


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