100Sn邻近区域缺中子奇A核低位能级寿命测量及电磁性质研究

基于兰州重离子加速器通过熔合蒸发反应产生100Sn邻近区域缺中子奇A核，利用充气反冲谱仪分离和纯化反冲核与类弹类靶核，运用beta-gamma符合与gamma-gamma符合技术结合溴化镧探测器与塑料闪烁体探测器的快时间特性测量反冲余核beta衰变子核低位能级寿命。提取能级退激跃迁强度B(E2)结合系统性和理论计算研究这一核区奇A核低位能级形成机制。

The neutron deficient odd A nuclei near 100Sn will be produced via heavy-ion fusion evaporation reaction bsaed on the Heavy Ion Research Facility in Lanzhou (HIRFL). The recoil nuclei will be separated from the beam- and target-like nuclei using the gas-filled recoil separator SHANS. Lifetimes of the low-lying levels in the daughter of the recoil nuclei β decay will be measured with the technique of the β- γ and γ- γ coincidence using the fast time feature of LaBr3 and Plastic scintillator detectors. The depopulated transition strength of these levels will be extracted to investigate their mechanism together with the systematics and theory calculations.