We report results from a systematic measurement campaign conducted to identify low radioactivity materials for the construction of the EXO-200 double beta decay experiment. Partial results from this campaign have already been reported in a 2008 paper by the EXO collaboration. Here we release the remaining data, collected since 2007, to the public. The data reported were obtained using a variety of analytic techniques. The measurement sensitivities are among the best in the field. Construction of the EXO-200 detector has been concluded, and Phase-I data was taken from 2011 to 2014. The detector's extremely low background implicitly verifies the measurements and the analysis assumptions made during construction and reported in this paper.

Additional Metadata
Keywords Alpha counting, Double beta decay, EXO, EXO-200, Germanium counting, Low background, Mass spectrometry, Mass spectroscopy, Neutron activation analysis, Radiopurity, Ultra-trace analysis
Persistent URL dx.doi.org/10.1016/j.nima.2017.04.049
Journal Nuclear Inst. and Methods in Physics Research, A
Citation
Leonard, D.S., Auty, D.J., Didberidze, T., Gornea, R.S, Grinberg, P., MacLellan, R., … Ziegler, T. (2017). Trace radioactive impurities in final construction materials for EXO-200. Nuclear Inst. and Methods in Physics Research, A. doi:10.1016/j.nima.2017.04.049