论文标题
$^{58} $ ni（$ p $，$ p $）的测量
Measurement of $^{58}$Ni($p$, $p$)$^{58}$Ni elastic scattering at low momentum transfer by using the HIRFL-CSR heavy-ion storage ring
论文作者
论文摘要
提出了HIRFL-CSR重型离子存储环的第一个环内反应实验，即稳定的$^{58} $ ni nuclei上的质子弹性散射。循环$^{58} $ ni $^{19+} $ ions的能量为95 meV/u，在CSRE实验环中反复与内部氢气目标相互作用。用超高真空兼容硅丝带检测器测量弹性碰撞的低能质子后坐力。通过$^{58} $ ni $^{19+} $ prackiles $^{58} $^{58} $ ni $^{19+} $ _ H $ _2 $ _2 $ _2 $ ionization碰撞，通过从$^{58} $ ni $^{19+} $ packiniles测量K-shell X射线来标准化了推导的差分横截面的标准化。与实验横截面相比，与测量区域中的理论预测达成了良好的一致性，这是通过使用全局现象学光学模型电位获得的。我们的结果通过使用HIRFL-CSR设施的环内反应设置，为外来核素的光学模型潜在研究提供了新的研究机会。
The very first in-ring reaction experiment at the HIRFL-CSR heavy-ion storage ring, namely proton elastic scattering on stable $^{58}$Ni nuclei, is presented. The circulating $^{58}$Ni$^{19+}$ ions with an energy of 95 MeV/u were interacting repeatedly with an internal hydrogen gas target in the CSRe experimental ring. Low energy proton recoils from the elastic collisions were measured with an ultra-high vacuum compatible silicon-strip detector. Deduced differential cross sections were normalized by measuring K-shell X-rays from $^{58}$Ni$^{19+}$ projectiles due to the $^{58}$Ni$^{19+}$-H$_2$ ionization collisions. Compared to the experimental cross sections, a good agreement has been achieved with the theoretical predictions in the measured region, which were obtained by using the global phenomenological optical model potentials. Our results enable new research opportunities for optical model potential studies on exotic nuclides by using the in-ring reaction setup at the HIRFL-CSR facility.
