论文标题

$^{210} $ pb的清除,由结晶探测器侧壁蚀刻

Removal of $^{210}$Pb by Etch of Crystalline Detector Sidewalls

论文作者

Street, Joseph, Mahapatra, Rupak, Morrison, Eric, Platt, Mark, Schnee, Richard

论文摘要

许多罕见事件搜索或筛选探测器的主要背景的潜在来源来自ra仪,特别是$^{210} $ pb,通常在检测器制造过程中存放在检测器表面上。执行后期蚀刻是具有挑战性的,因为它可能会损坏检测器。本文介绍了一种后期蚀刻技术,可降低表面$^{210} $ pb和$^{210} $ po by $> 99 \ times $ $> 90%c.l.

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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