EC缓发裂变作为一种奇异的核衰变方式，对研究远离稳定线核的裂变性质具有重要意义。本项目旨在利用兰州充气反冲谱仪SHANS装置，研究超铀区缺中子新核素230Am的EC缓发裂变性质。该研究拟采用熔合蒸发反应206Pb(27Al, 3n)230Am合成目标核，利用能量-位置-时间关联测量方法对目标核进行鉴别，同时在谱仪上发展“X射线-裂变”符合测量技术，实现对EC缓发裂变过程的直接指认。研究中将首次测量得到230Am核EC缓发裂变概率、alpha衰变能和半衰期以及EC衰变子核230Pu的平均裂变总动能等信息，并在一定的理论模型框架下，抽取230Pu核裂变位垒信息，检验不同理论模型对远离稳定线核的裂变位垒的预言。

As an exotic nuclear decay process, EC-delayed fission (ECDF) plays an important role in the fission research of nuclei far from the stability line. Based on the Lanzhou gas-filled recoil separator (SHANS), this proposal is aiming to study the ECDF of the neutron-deficient transuranium isotope 230Am. Via the fusion reaction 206Pb(27Al, 3n)230Am, the nuclide 230Am will be produced and identified by the energy-position-time correlation measurement for EVR-alpha and EVR-fission decay chains. The ECDF process will be verified directly by the newly developed X-ray-fission coincidence measurement. In the research, we will measure the delayed fission probability, alpha decay properties of 230Am, and the mean total kinetic energy of coincident fission fragments of 230Pu. A fission barrier height will be extracted, which will be compared with different theoretical predictions.