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arXiv:1907.09332v2 (astro-ph)
[Submitted on 22 Jul 2019 (v1), last revised 28 Oct 2019 (this version, v2)]

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

Authors:P. Agnes, I.F.M. Albuquerque, T. Alexander, A.K. Alton, M. Ave, H.O. Back, G. Batignani, K. Biery, V. Bocci, G. Bonfini, W.M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, N. Canci, A. Candela, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, S. Catalanotti, V. Cataudella, P. Cavalcante, S. Cavuoti, A. Chepurnov, C. Cicalo, A.G. Cocco, G. Covone, D. D'Angelo, S. Davini, A. De Candia, S. De Cecco, M. De Deo, G. De Filippis, G. De Rosa, A.V. Derbin, A. Devoto, F. Di Eusanio, M. D'Incecco, G. Di Pietro, C. Dionisi, M. Downing, D. D'Urso, E. Edkins, A. Empl, G. Fiorillo, K. Fomenko, D. Franco, F. Gabriele, C. Galbiati, C. Ghiano, S. Giagu, C. Giganti, G.K. Giovanetti, O. Gorchakov, A.M. Goretti, F. Granato, A. Grobov, M. Gromov, M. Guan, Y. Guardincerri, M. Gulino, B.R. Hackett, K. Herner, B. Hosseini, D. Hughes, P. Humble, E.V. Hungerford, Al. Ianni, An. Ianni, V. Ippolito, T.N. Johnson, K. Keeter, C.L. Kendziora, I. Kochanek, G. Koh, D. Korablev, G. Korga, A. Kubankin, M. Kuss, M. La Commara, M. Lai, X. Li, M. Lissia, G. Longo, A.A. Machado, I.N. Machulin, A. Mandarano, L. Mapelli, S.M. Mari, J. Maricic, C.J. Martoff, A. Messina, P.D. Meyers, R. Milincic, A. Monte, M. Morrocchi et al. (66 additional authors not shown)  You must enable JavaScript to view entire author list.
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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}}$.
Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM); Instrumentation and Detectors (physics.ins-det)
Cite as: arXiv:1907.09332 [astro-ph.IM]
  (or arXiv:1907.09332v2 [astro-ph.IM] for this version)
  https://doi.org/10.48550/arXiv.1907.09332
Journal reference: JINST 14 P11018 (2019)
Related DOI: https://doi.org/10.1088/1748-0221/14/11/P11018

Submission history

From: Alissa Monte [view email]
[v1] Mon, 22 Jul 2019 14:17:08 UTC (1,980 KB)
[v2] Mon, 28 Oct 2019 13:07:51 UTC (1,983 KB)
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