Measurement of the ion fraction and mobility of ${}^{218}$Po produced in ${}^{222}$Rn decays in liquid argon

Abstract

We report measurements of the charged daughter fraction of ${}^{218}$Po as a result of the ${}^{222}$Rn alpha decay, and the mobility of ${}^{218}$Po${}^{+}$ ions, using radon-polonium coincidences from the ${}^{238}$U chain identified in 532 live-days of DarkSide-50 WIMP-search data. The fraction of ${}^{218}$Po that is charged is found to be 0.37$\pm$0.03 and the mobility of ${}^{218}$Po${}^{+}$ is (8.6$\pm$0.1)$\times$10${}^{-4}$$\frac{{\text{cm}}^2}{\text{Vs}}$.

References in corpus (10)

• Low-Mass Dark Matter Search with the DarkSide-50 Experiment
• First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso
• DarkSide-50 532-day Dark Matter Search with Low-Radioactivity Argon
• Results from the first use of low radioactivity argon in a dark matter search
• Sensitivity and discovery potential of the proposed nEXO experiment to neutrinoless double beta decay
• The background in the neutrinoless double beta decay experiment GERDA
• Measurements of the ion fraction and mobility of alpha and beta decay products in liquid xenon using EXO-200
• Intrinsic backgrounds from Rn and Kr in the XENON100 experiment
• Mobility and Clustering of Barium Ions and Dications in High Pressure Xenon Gas
• Imaging individual barium atoms in solid xenon for barium tagging in nEXO

Cited by in corpus (1)

• Measurement of ambient radon progeny decay rates and energy spectra in liquid argon using the MicroBooNE detector