4.4 Article

Systematic study of trace radioactive impurities in candidate construction materials for EXO-200

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ELSEVIER
DOI: 10.1016/j.nima.2008.03.001

Keywords

radiopurity; trace analysis; neutron activation analysis; mass spectrometry; mass spectroscopy; germanium counting; alpha counting; low background; double beta decay; EXO; EXO-200

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The Enriched Xenon Observatory (EXO) will search for double beta decays of Xe-136. We report the results of a systematic study of trace concentrations of radioactive impurities in a wide range of raw materials and finished parts considered for use in the construction of EXO-200, the first stage of the EXO experimental program. Analysis techniques employed, and described here, include direct gamma counting, alpha counting, neutron activation analysis, and high-sensitivity mass spectrometry. (C) 2008 Elsevier B.V. All rights reserved.

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