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A study of the trace Ar-39 content in argon from deep underground sources

Author(s): Xu, J; Calaprice, Frank P.; Galbiati, Cristiano; Goretti, A; Guray, G; et al

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Abstract: The discovery of argon from deep underground sources with significantly less Ar-39 than atmospheric argon was an important step in the development of direct dark matter detection experiments using argon as the active target. We report on the design and operation of a low-background single-phase liquid argon detector that was built to study the Ar-39 content of this underground argon. Underground argon from the Kinder Morgan CO2 plant in Cortez, Colorado was determined to have less than 0.65% of the Ar-39 activity in atmospheric argon, or 6.6 mBq/kg specific Ar-39 activity. (C) 2015 Elsevier B.V. All rights reserved.
Publication Date: Jun-2015
Electronic Publication Date: 19-Jan-2015
Citation: Xu, J, Calaprice, F, Galbiati, C, Goretti, A, Guray, G, Hohman, T, Holtz, D, Ianni, An, Laubenstein, M, Loer, B, Love, C, Martoff, CJ, Montanari, D, Mukhopadhyay, S, Nelson, A, Rountree, SD, Vogelaar, RB, Wright, A. (2015). A study of the trace Ar-39 content in argon from deep underground sources. ASTROPARTICLE PHYSICS, 66 (53 - 60. doi:10.1016/j.astropartphys.2015.01.002
DOI: doi:10.1016/j.astropartphys.2015.01.002
ISSN: 0927-6505
EISSN: 1873-2852
Pages: 53 - 60
Type of Material: Journal Article
Journal/Proceeding Title: ASTROPARTICLE PHYSICS
Version: Author's manuscript

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