慢碰撞$^\textrm{54+,53+}$ -碰撞中单、双$K$壳层空位的产生
Single and double $K$-shell vacancy production in slow Xe$^\textrm{54+,53+}$-Xe collisions
摘要：
我们提出了一个对称的$\textrm{Xe}^{54+}+\textrm{Xe}$碰撞在50，30，和15 MeV/u的实验和理论研究，对应于强扰动与$v_K/v_\text{p}$ = 1.20，1.55，和2.20，分别（$v_K$：经典的$K$ -壳层轨道速度，$v_\text{p}$：弹丸速度），以及$\textrm{Xe}^{53+}+\textrm{Xe}$碰撞在15 MeV/u。对于这些系统中的每一个，在相对于射弹束的$35^\circ$的前向角下测量X射线光谱。目标卫星和超卫星辐射，$Kα_{2,1}^\mathrm{s}$和$Kα_{2,1}^\mathrm{hs}$，分别进行了分析，并用于获得双到单目标$K$ -壳空位生产的横截面比。我们比较我们的实验结果与相对论含时双中心计算。
英文摘要：
We present an experimental and theoretical study of symmetric $\textrm{Xe}^{54+}+\textrm{Xe}$ collisions at 50, 30, and 15 MeV/u, corresponding to strong perturbations with $v_K/v_\text{p}$ = 1.20, 1.55, and 2.20, respectively ($v_K$: classical $K$-shell orbital velocity, $v_\text{p}$: projectile velocity), as well as $\textrm{Xe}^{53+}+\textrm{Xe}$ collisions at 15 MeV/u. For each of these systems, x-ray spectra were measured under a forward angle of $35^\circ$ with respect to the projectile beam. Target satellite and hypersatellite radiation, $Kα_{2,1}^\mathrm{s}$ and $Kα_{2,1}^\mathrm{hs}$, respectively, were analyzed and used to derive cross section ratios for double-to-single target $K$-shell vacancy production. We compare our experimental results to relativistic time-dependent two-center calculations.
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