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dc.contributor.authorPlastino, Wolfango
dc.contributor.authorKaihola, Lauri
dc.date.accessioned2021-02-11T21:46:18Z
dc.date.available2021-02-11T21:46:18Z
dc.date.issued2004-01-01
dc.identifier.citationPlastino, W., & Kaihola, L. (2004). Surface and underground ultra low-level liquid scintillation spectrometry. Radiocarbon, 46(1), 97-104.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200039400
dc.identifier.urihttp://hdl.handle.net/10150/654954
dc.descriptionFrom the 18th International Radiocarbon Conference held in Wellington, New Zealand, September 1-5, 2003.
dc.description.abstractCosmic background and its variation have been removed in the Gran Sasso National Laboratory (National Institute of Nuclear Physics) by its 1400-m rock overburden. Stable, high-performance liquid scintillation counting conditions are obtained when any remaining variable components of the environmental background, such as radon, are eliminated. The ultra low-level liquid scintillation spectrometer Quantulus(TM) has an anti-Compton guard detector (guard for short) that allows monitoring of gamma radiation in the background. The guard detector efficiency in radiocarbon background reduction is 8% in the Gran Sasso National Laboratory, while 80% is observed in surface laboratories. Thus, atmospheric pressure variations in surface laboratories cause variation in cosmic radiation flux. The Quantulus anti-Compton detector is highly efficient in detecting cosmic radiation, and the sample count rate remains stable in long-term counting. Also, correlation of sample backgrounds with environmental gamma radiation in various laboratories is examined.
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.subjectabsolute age
dc.subjectC 14
dc.subjectcarbon
dc.subjectCompton radiation
dc.subjectcosmic rays
dc.subjectEurope
dc.subjectgamma rays
dc.subjectGran Sasso National Laboratory
dc.subjectinstruments
dc.subjectisotopes
dc.subjectItaly
dc.subjectliquid scintillation methods
dc.subjectmethods
dc.subjectmonitoring
dc.subjectQuantulus
dc.subjectradioactive isotopes
dc.subjectSouthern Europe
dc.subjectunderground installations
dc.titleSurface and Underground Ultra Low-Level Liquid Scintillation Spectrometry
dc.typeProceedings
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.volume46
dc.source.issue1
dc.source.beginpage97
dc.source.endpage104
refterms.dateFOA2021-02-11T21:46:18Z


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