# Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (8): 108

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH •

### A development of lifetime measurement based on the differential decay curve method

Jian Zhong 1 • Xiao-Guang Wu 1 • Ying-Jun Ma 2 • Yun Zheng 1 • Cong-Bo Li 1 • Guang-Sheng Li 1 • Bao-Ji Zhu 1 • Tian-Xiao Li 1,3 • Yan-Jun Jin 1 • Yan-Xiang Gao 1 • Ke-Yan Ma 2 • Dong Yang 2 • Hao Guo 2 • Jia-Qi Wang 2 • Xian Guan 2 • Ji Sun 2

1. 1 China Institute of Atomic Energy, Beijing 102413, China
2 College of Physics, Jilin University, Changchun 621010, China
3 Shenyang Institute of Engineering, Shenyang 110136, China
• Contact: Jian Zhong E-mail:zhongj2015@163.com
• Supported by:

This work was supported by the National Natural Science Foundation of China (No. 11475072, 11375267, 11305269, 11405274, 11405072, 11205069, 11775307, 11375266, 11575118 and 11605114), the National Natural Science Foundation of Guangdong, China (No. 2016A030310042), and the National Key Research and Development Program of China, the National Key Scientific Instrument and Equipment Development Projects, China (No. 2017YFF0106501).

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Jian Zhong, Xiao-Guang Wu, Ying-jun Ma, Yun Zheng, Cong-Bo Li, Guang-Sheng Li, Bao-Ji Zhu, Tian-Xiao Li, Yan-Jun Jin, Yan-Xiang Gao, Ke-Yan Ma, Dong Yang, Hao Guo, Jia-Qi Wang, Xian Guan, Ji Sun. A development of lifetime measurement based on the differential decay curve method.Nuclear Science and Techniques, 2018, 29(8): 108

Abstract:

A new development of indirect gating case in the differential decay curve method used for lifetime measurement has been introduced. The gate region was extended from partial shifted peak to both shifted and unshifted components. The statistics of flight and stop peaks in gating spectra was improved obviously. The reliability of this change has been tested by reanalysing the lifetime of 2+ state in 134Ce. The result of 32.2(33) ps was fit well with the previous published values within the experimental uncertainty. The developed method was also used to analyse the lifetime of 2+1 state in 138Nd.