HALIMA: A Hybrid Array for LIfetime MeAsurement of Neutron-Rich Nuclei at IMP
new multi-detector array named HALIMA (Hybrid Array for LIfetime MeAsurement) has been developed at Lanzhou, for nuclear structure studies in fission. The array comprises eight BGO-shielded High-Purity Germanium (HPGe) detectors and twenty fast Ce-doped Lanthanum Bromide [LaBr3(Ce)] detectors shielded with CsI(Tl). HALIMA is further complemented by two ancillary detector systems: fission fragment (FF) detectors and detectors. This configuration enables precise sub-nanosecond lifetime measurements using a four-fold FF/-Ge-LaBr3(Ce)-LaBr3(Ce) coincidence technique. The performance and specifications of the detectors, associated electronics, and data acquisition system are presented in detail. The advantage of FF selectivity is emphasized, which significantly enhances the sensitivity to specific fission channels. Using this approach, lifetimes of nuclear excited states populated in the spontaneous fission of 252Cf have been measured, showing good agreement with established literature values.
Yang, Dr. Herun、hen, Dr. Ruofu、Li, Mrs. Haixia、Li, Dr. Ronghua、Wang, Dr. Xiuhua、hen, Dr. Cuihong、Yang, Dr. Haibo、Wang, Dr. Jian-Song、Sun, Dr. Xiaohui、Li, Dr. Zhihuan、Hua, Prof. Hui 华辉、Xu, Prof. Xinxing、Zhou, Prof. Xiaohong 周小红、Gan, Zaiguo、Zhang, Prof. Yuhu、Jia, Dr. Zihao、Fang, Dr. Yongde、Wang, Dr. Sicheng、wei, Dr. hua、Wu, Dr. hongyi、Zhang, Dr. Guangxin、Yuan (Nuclear physics), Dr. Cenxi、Wang, Mr. Zhi-xuan、Xu, Dr. Junhong、Li, Dr. Jianhong、Liang, Mrs. Wen、an, Mr. Yuhong、Pan, Mr. Wenjun、Ren, Mr. Yuxuan、Kumar Raju, Dr. Mukhi、Guo, Prof. Song、Li, Dr. Guangshun、Qiang, Dr. Yunhua、Liu, Prof. Min-Liang、ing, Dr. Bing、Huang, Dr. Minghui、Zhang, Mr. Ningtao、Gao, Dr. Bingshui、Ma, Mr. Peng
Institute of Modern Physics Chinese Academy of SciencesInstitute of Modern Physics Chinese Academy of SciencesHuzhou UniversityHuzhou universityPeking UniversityChinese Academy of Sciences Lanzhou BranchInstitute of Modern Physics Chinese Academy of SciencesInstitute of Modern Physics Chinese Academy of Sciences;University of the Chinese Academy of SciencesSun Yat-Sen UniversityInstitute of Modern Physics Chinese Academy of SciencesInstitute of Modern Physics, Chinese Academy of SciencesInstitute of Modern Physics Chinese Academy of SciencesInstitute of Modern Physics Chinese Academy of Sciences
粒子探测技术、辐射探测技术、核仪器仪表
Fission Fragments/β-γ rays coincidencesSelectivitySpontaneous fissionLaBr<sub>3</sub>(Ce)HPGeSolar cellsLifetime measurement
Yang, Dr. Herun,hen, Dr. Ruofu,Li, Mrs. Haixia,Li, Dr. Ronghua,Wang, Dr. Xiuhua,hen, Dr. Cuihong,Yang, Dr. Haibo,Wang, Dr. Jian-Song,Sun, Dr. Xiaohui,Li, Dr. Zhihuan,Hua, Prof. Hui 华辉,Xu, Prof. Xinxing,Zhou, Prof. Xiaohong 周小红,Gan, Zaiguo,Zhang, Prof. Yuhu,Jia, Dr. Zihao,Fang, Dr. Yongde,Wang, Dr. Sicheng,wei, Dr. hua,Wu, Dr. hongyi,Zhang, Dr. Guangxin,Yuan (Nuclear physics), Dr. Cenxi,Wang, Mr. Zhi-xuan,Xu, Dr. Junhong,Li, Dr. Jianhong,Liang, Mrs. Wen,an, Mr. Yuhong,Pan, Mr. Wenjun,Ren, Mr. Yuxuan,Kumar Raju, Dr. Mukhi,Guo, Prof. Song,Li, Dr. Guangshun,Qiang, Dr. Yunhua,Liu, Prof. Min-Liang,ing, Dr. Bing,Huang, Dr. Minghui,Zhang, Mr. Ningtao,Gao, Dr. Bingshui,Ma, Mr. Peng.HALIMA: A Hybrid Array for LIfetime MeAsurement of Neutron-Rich Nuclei at IMP[EB/OL].(2025-08-14)[2025-09-06].https://chinaxiv.org/abs/202508.00381.点此复制
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