We report measurements of the charged daughter fraction of 218Po as a result of the 222Rn alpha decay, and the mobility of 218Po+ ions, using radon-polonium coincidences from the 238U chain identified in 532 live-days of DarkSide-50 WIMP-search data. The fraction of 218Po that is charged is found to be 0.37 ± 0.03 and the mobility of 218Po+ is (8.6 ± 0.1) × 10−4 cmVs2.
Measurement of the ion fraction and mobility of 218Po produced in 222Rn decays in liquid argon
Bonivento W. M.;Cadeddu M.;Cadoni M.;Caravati M.;Cicalo C.;Devoto A.;Fiorillo G.;Galbiati C.;Lissia M.;Longo G.;Picciau E.;
2019-01-01
Abstract
We report measurements of the charged daughter fraction of 218Po as a result of the 222Rn alpha decay, and the mobility of 218Po+ ions, using radon-polonium coincidences from the 238U chain identified in 532 live-days of DarkSide-50 WIMP-search data. The fraction of 218Po that is charged is found to be 0.37 ± 0.03 and the mobility of 218Po+ is (8.6 ± 0.1) × 10−4 cmVs2.File in questo prodotto:
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