Chinese Physics C > 1997, Vol. 21 > Issue(10): 881-885

Lifetime Measurement of the Negative-Parity Isomers in¹¹⁷Xe

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 7300001 China Institute of Atomic Energy,BeIjing 102413

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Abstract：
Delayed coincidence method was used to measure the lifetimes of the isomeric states in ¹¹⁷Xe.Two halflives of T _1/2=(59±20) ns and T _1/2=(16.5±8.0) ns have been extracted from the coincidence time spectrum between the 401keV(15/2 ^－→11/2 ^－) and the 205keV(7/2 ^－→5/2 ^＋) transitions,and are assigned to the 11/2 ^－and 7/2 ^－states respectively.

References

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V. Barci et al., Nucl. Phys., A383(1982)309.[2]S. Ohya, T. Tamura, Nucl. Data Sheets, 60(1993)600.br[3]刘忠等,高能物理与核物理,19(1995)102.[4]刘忠，博士论文，中国科学院近代物理研究所,(1995).[5]孙相富等，核电子学与探测技术，12(1992)83.[6〕王韶舜，核与粒子物理实验方法，原子能出版社,(1989)268.[7]G. Marguier el al., J. Phys., G12(1986)757.7[8]S. Tormanen et al., Nucl. Phys., A572(1994)417.[9]M. Gai et al., Phys. Rev., C26(1982) 1101.

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Liu Zhong, Sun Xiangfu, Guo Yingxiang, Lei Xiangguo, Chen Xinfeng, Zhou Xiaohong, Zhang Yuhu, Jin Hanjuan, Luo Yixiao, Wen Shuxian, Yuan Guanjun, Li Guangsheng, Yang Chunxiang and Liu Xiang. Lifetime Measurement of the Negative-Parity Isomers in ¹¹⁷Xe[J]. Chinese Physics C, 1997, 21(10): 881-885.

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Lifetime Measurement of the Negative-Parity Isomers in¹¹⁷Xe

Corresponding author:Liu Zhong,

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 7300001 China Institute of Atomic Energy,BeIjing 102413

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1997-10-05

Abstract:Delayed coincidence method was used to measure the lifetimes of the isomeric states in¹¹⁷Xe.Two halflives of T_1/2=(59±20) ns and T_1/2=(16.5±8.0) ns have been extracted from the coincidence time spectrum between the 401keV(15/2^－→11/2^－) and the 205keV(7/2^－→5/2^＋) transitions,and are assigned to the 11/2^－and 7/2^－states respectively.