质子-中子相互作用（p-n相互作用）是原子核出现集体性、发生形变以及壳结构演化的重要因素。本项目旨在利用充气反冲核谱仪SHANS装置首次合成极缺中子的U和Pu新核素，在Z>82、N<=126的重核区，研究填充2f7/2轨道的质子和填充2f5/2轨道的中子间的p-n相互作用强度，探索该核区原子核壳结构的演化性质。同时，基于实验测量的新核素的alpha衰变性质，首次从实验角度研究强吸引的p-n相互作用对原子核alpha衰变谱学性质的影响，并为理论上预言远离稳定线原子核的质量提供实验依据。

The proton-neutron interaction (p-n interaction) is of fundamental interest of nuclear structure. It has been shown that it is essential for the onset of collectivity and deformation in nuclei, and for changes of the underlying shell structure. In this proposal, a few most neutron-deficient isotopes of U and Pu would be synthesized for the first time on the gas-filled recoil separator, SHANS. The experimental results would be helpful for the deep understanding of p-n interaction strength between the valence protons filling the 2f7/2 orbital and the valence neutrons filling the 2f5/2 orbital in the mass region of Z>82 and N<=126. The structural evolution in this nuclear region will be investigated. Moreover, on the base of the measured alpha-decay properties of the new isotopes, we can investigate, from the experimental point of view, the influence on the alpha-decay spectroscopy induced by the strong and attractive p-n interaction, and provide valuable information on the theoretical mass predictions for nuclei far from stability.