Estimation of radiative half-life of 229mTh by half-life measurement of other nuclear excited states in 229Th

被引：8

作者：

Shigekawa, Y. ^{[1
]}

Yamaguchi, A. ^{[2
,3
]}

Suzuki, K. ^{[4
]}

Haba, H. ^{[1
]}

Hiraki, T. ^{[4
]}

Kikunaga, H. ^{[5
]}

Masuda, T. ^{[4
]}

Nishimura, S. ^{[1
]}

Sasao, N. ^{[4
]}

Yoshimi, A. ^{[4
]}

Yoshimura, K. ^{[4
]}

机构：

[1] RIKEN, Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan

[2] RIKEN, Quantum Metrol Lab, Wako, Saitama 3510198, Japan

[3] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

[4] Okayama Univ, Res Inst Interdisciplinary Sci, Okayama, Okayama 7008530, Japan

[5] Tohoku Univ, Res Ctr Electron Photon Sci, Sendai, Miyagi 9820826, Japan

来源：

PHYSICAL REVIEW C | 2021年 / 104卷 / 02期

关键词：

LEVEL SCHEME; GROUND-STATE; ALPHA-DECAY; ENERGY; TRANSITION;

D O I：

10.1103/PhysRevC.104.024306

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We perform coincidence measurements between a particles and. rays from a U-233 source to determine the half-lives of the excited state in a Th-229 nucleus. We first prove that the half-lives of 42.43- and 164.53-keV states are consistent with literature values, whereas that of the 97.14-keV state [93(7) ps] deviates from a previously measured value [147(12) ps]. The half-lives of 71.83- and 163.25-keV states are determined for the first time. Based on the obtained half-lives and the Alaga rule, we estimate the radiative half-life of the low-energy isomeric state (Th-229m) to be 5.0(11) x 10(3) s, which is one of the key parameters for the frequency standard based on Th-229.

引用

页数：12

共 50 条

[1] Determination of the 229Th half-life
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[2] Half-Life of 229mTh Isomers in an Acid Solution
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[4] New determination of the 229Th half-life
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Mann, Jacqueline L.
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Kikunaga, H.
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Mitsugashira, T.
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Takamiya, K.
Ohtsuki, T.
Yokoyama, A.
Nakanishi, T.
Shinohara, A.
[J]. PHYSICAL REVIEW C, 2009, 80 (03):
[6] HALF-LIFE OF TH-229
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WILLIAMS, RW
[J]. PHYSICAL REVIEW C, 1989, 40 (06): : 2793 - 2795
[7] Measurement of the half-life of excited nuclear states using liquid scintillation counting
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[8] Determination of the half-life of the ground state of 229Th by using 232U and 233U decay series
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Suzuki, T.
Nomura, M.
Mitsugashira, T.
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[9] Measurement of 237Th half-life
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[10] THE MEASUREMENT OF THE HALF-LIFE OF PU-240 BY THE UNITED-STATES HALF-LIFE EVALUATION COMMITTEE
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