Lifetime measurement of the first excited 5/2(+) state in Cs-133 using NaI(Tl) and LaBr3(Ce) detectors

Lugendo, I. J.; Ahn, J. K.; Kumwenda, M. J.; Lee, J. W.; Hong, B.; Hwang, S. H.

doi:10.1016/j.apradiso.2019.05.027

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Lifetime measurement of the first excited 5/2(+) state in Cs-133 using NaI(Tl) and LaBr3(Ce) detectors

Lugendo, I. J.;
Ahn, J. K.;
Kumwenda, M. J.;
Lee, J. W.;
Hong, B.;
외 1명

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초록

We report a new high-precision lifetime measurement of the first excited 5/2(+) state of Cs-133 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-key (1/2(+) -> 5/2(+)) gamma transition was tagged by the successive 81-keV (5/2(+) -> 7/2(+)) transition of Cs-133. The half-life of the first excited 5/2(+) Cs-133 state was measured as T-1/2 = 6.283 +/- 0.004 (stat.) +/- 0.011(syst.) ns.

키워드

Lifetime; LaBr3(Ce) scintillator; NaI(Tl) scintillator; Cs-133; DECAY

제목: Lifetime measurement of the first excited 5/2(+) state in Cs-133 using NaI(Tl) and LaBr3(Ce) detectors

저자: Lugendo, I. J.; Ahn, J. K.; Kumwenda, M. J.; Lee, J. W.; Hong, B.; Hwang, S. H.

DOI: 10.1016/j.apradiso.2019.05.027

발행일: 2019-08

유형: Article

저널명: Applied Radiation and Isotopes

권: 150

페이지: 141 ~ 145