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在中国科学院近代物理研究所放射性束流线(RIBLL)上成功开展了丰质子近滴线核~(27)P与~(28)S高激发态双质子衰变现象的研究。实验采用能损与飞行时间鉴别技术,即△E-TOF方式鉴别次级束离子,运用方硅、硅条探测器以及CsI晶体组成△E-△E-E_r探测器阵列实现破裂余核与发射轻粒子的运动学完全测量。实验数据采用“Event-byEvent”分析过程,对每个两粒子发射事件进行运动学重构,然后依据激发能谱、角关联函数以及相对动量谱等参量并结合蒙特卡罗模拟探讨两粒子发射机制。能量为48.7 MeV/u的~(29)S束流与46.2 MeV/u
The proton decay phenomenon of ~ (27) P and ~ (28) S high excited states of the proton near the drip line in the radioactive beam line (RIBLL) at the Institute of Modern Physics, Chinese Academy of Sciences was successfully studied. Experiments using energy loss and time-of-flight identification technology, that is, △ E-TOF identification of secondary beam ions, the use of square silicon, silicon detector and CsI crystal form △ E- △ E-E detector array to achieve rupture of the nuclear and emission Kinematics of light particles are completely measured. The kinetic reconstruction of each two-particle emission event is carried out using the “Event-byEvent” analysis of the experimental data. Based on the parameters of excitation energy spectrum, angular correlation function and relative momentum spectroscopy and Monte Carlo simulation, Launch mechanism. The ~ (29) S beam with an energy of 48.7 MeV / u and 46.2 MeV / u