New isotope production of neutron-deficient actinide nucleus with N =126

为了评价N = 126壳层闭合稳定性所产生的新区域，在RIKEN利用RILAC和GARIS进行了Z >= 92和接近N = 126壳层闭合的新同位素的生产实验。我们用聚变反应来制造新的同位素。在三年的研究期间，观察到了217（Z=92，N=125）的新跃迁，产生了最轻的铀同位素215U（Z=92，N=123）和216U（Z=92，N=124）两个新同位素。这是世界上第一次观察到的结果。

In this study to evaluate new region arrised from the stability of N = 126 closed shell, the production experiments of new isotopes with Z >= 92 and close to N = 126 shell closure were performed.The experiments were carried out at RIKEN using RILAC and GARIS. We used fusion reactions to produce new isotopes. During the three year study period, the new transitions for 217(Z=92,N=125) were observed, and two new isotopes of 215U(Z=92,N=123) and 216U(Z=92,N=124) which were the most lightest uranium isotope were produced. These results are the first observation in the world.