2000 character limit reached
Removal of $^{210}$Pb by Etch of Crystalline Detector Sidewalls (2005.00488v1)
Published 1 May 2020 in physics.ins-det, astro-ph.IM, and nucl-ex
Abstract: A potential source of dominant backgrounds for many rare-event searches or screening detectors is from radon daughters, specifically ${210}$Pb, deposited on detector surfaces, often during detector fabrication. Performing a late-stage etch is challenging because it may damage the detector. This paper describes a late-stage etching technique that reduces surface ${210}$Pb and ${210}$Po by $>99\times$ at 90% C.L.
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