Lugendo IJ, Ahn JK, Kumwenda MJ, Lee JW, Hong B, Hwang SH. Lifetime measurement of the first excited 5/2
+ state in
133Cs using NaI(Tl) and LaBr
3(Ce) detectors.
Appl Radiat Isot 2019;
150:141-145. [PMID:
31146218 DOI:
10.1016/j.apradiso.2019.05.027]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 04/05/2019] [Accepted: 05/16/2019] [Indexed: 10/26/2022]
Abstract
We report a new high-precision lifetime measurement of the first excited 5/2+ state of 133Cs using NaI(Tl) and LaBr3(Ce) detectors. The time difference between the coincident decays of two successive states was measured using fast-timing electronics. The 356-keV (1/2+→5/2+) gamma transition was tagged by the successive 81-keV (5/2+→7/2+) transition of 133Cs. The half-life of the first excited 5/2+133Cs state was measured as T1/2=6.283±0.004 (stat.) ±0.011(syst.) ns.
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