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

被引：1

作者：

Lugendo, I. J. ^{[1
]}

Ahn, J. K. ^{[2
]}

Kumwenda, M. J. ^{[1
]}

Lee, J. W. ^{[2
]}

Hong, B. ^{[2
]}

Hwang, S. H. ^{[3
]}

机构：

[1] Univ Dar Es Salaam, Dept Phys, POB 35063, Dar Es Salaam, Tanzania

[2] Korea Univ, Dept Phys, Seoul 02841, South Korea

[3] KRISS, Daejeon 34113, South Korea

来源：

APPLIED RADIATION AND ISOTOPES | 2019年 / 150卷

基金：

新加坡国家研究基金会;

关键词：

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

D O I：

10.1016/j.apradiso.2019.05.027

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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.

引用

页码：141 / 145

页数：5

共 30 条

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