Radon daughter removal from PTFE surfaces and its application in liquid xenon detectors
نویسندگان
چکیده
Abstract Long-lived radon daughters are a critical background source in experiments searching for low-energy rare events. Originating from ambient air, radioactive polonium, bismuth and lead isotopes plate-out on materials that later employed the experiment. In this paper, we examine cleaning procedures their capability to remove PTFE surfaces, material often used liquid xenon TPCs. We find large difference between removal efficiency obtained decay chains of $$^{222}$$ 222 Rn $$^{220}$$ 220 Rn. This indicates mechanism has an effect success. While long-lived can be reduced by factor 2, is up 10 times more efficient depending treatment. Furthermore, impact nitric acid based purity investigated small-scale TPC.
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ژورنال
عنوان ژورنال: European Physical Journal C
سال: 2021
ISSN: ['1434-6044', '1434-6052']
DOI: https://doi.org/10.1140/epjc/s10052-021-09047-2