Lifetimes of (214)Po and (212)Po measured with Counting Test Facility at Gran Sasso National Laboratory.
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2014;
138:444-446. [PMID:
24725806 DOI:
10.1016/j.jenvrad.2014.02.025]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 12/16/2013] [Accepted: 02/27/2014] [Indexed: 06/03/2023]
Abstract
The decays of (214)Po into (210)Pb and of (212)Po into (208)Pb tagged by the previous decays from (214)Bi and (212)Bi have been studied inserting quartz vials inside the Counting Test Facility (CTF) at the underground laboratory in Gran Sasso (LNGS). We find that the mean lifetime of (214)Po is (236.00 ± 0.42(stat) ± 0.15(syst)) μs and that of (212)Po is (425.1 ± 0.9(stat) ± 1.2(syst)) ns. Our results are compatible with previous measurements, have a much better signal to background ratio, and reduce the overall uncertainties.
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