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

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

doi:10.1016/j.apradiso.2019.05.027

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

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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^{+ 133}Cs state was measured as T_1/2=6.283±0.004 (stat.) ±0.011(syst.) ns.

Original language	English
Pages (from-to)	141-145
Number of pages	5
Journal	Applied Radiation and Isotopes
Volume	150
DOIs	https://doi.org/10.1016/j.apradiso.2019.05.027
Publication status	Published - 2019 Aug

Bibliographical note

Funding Information:
We are greatly indebted to J.M. Lee at KRISS for providing a 133 Ba radioactive source encapsulated in a thin film. This work was supported in part by the National Research Foundation of Korea and Korea University .

Publisher Copyright:
© 2019

Keywords

Cs
LaBr(Ce) scintillator
Lifetime
NaI(Tl) scintillator

ASJC Scopus subject areas

Radiation

Access to Document

10.1016/j.apradiso.2019.05.027

Cite this

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

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.",

keywords = "Cs, LaBr(Ce) scintillator, Lifetime, NaI(Tl) scintillator",

author = "Lugendo, {I. J.} and Ahn, {J. K.} and Kumwenda, {M. J.} and Lee, {J. W.} and B. Hong and Hwang, {S. H.}",

note = "Funding Information: We are greatly indebted to J.M. Lee at KRISS for providing a 133 Ba radioactive source encapsulated in a thin film. This work was supported in part by the National Research Foundation of Korea and Korea University . Publisher Copyright: {\textcopyright} 2019",

year = "2019",

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doi = "10.1016/j.apradiso.2019.05.027",

language = "English",

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T1 - Lifetime measurement of the first excited 5/2+ state in 133Cs using NaI(Tl) and LaBr3(Ce) detectors

AU - Lugendo, I. J.

AU - Ahn, J. K.

AU - Kumwenda, M. J.

AU - Lee, J. W.

AU - Hong, B.

AU - Hwang, S. H.

N1 - Funding Information: We are greatly indebted to J.M. Lee at KRISS for providing a 133 Ba radioactive source encapsulated in a thin film. This work was supported in part by the National Research Foundation of Korea and Korea University . Publisher Copyright: © 2019

PY - 2019/8

Y1 - 2019/8

N2 - 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.

AB - 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.

KW - Cs

KW - LaBr(Ce) scintillator

KW - Lifetime

KW - NaI(Tl) scintillator

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JO - Applied Radiation and Isotopes

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