等速电子和质子碰撞激发高电荷态类氢离子的比较研究

Electron loss from hydrogen-like highly charged ions in collisions with electrons, protons and light atoms

We study electron loss from a hydrogen-like highly charged ion by the impact of equivelocity electrons and protons and also in collisions with hydrogen and helium. The collision velocity $v$ varies between $v_{min}$ and $v_{max}$, where $v_{min}$ and $v_{max}$ correspond to the energy threshold $\varepsilon_{th}$ for electron loss in collisions with a free electron and to $\approx 5 \, \varepsilon_{th}$, respectively. Our results show that in this range of $v$: i) compared to equivelocity electrons protons are more effective in inducing electron loss (due to a substantially larger volume of th…

μ子原子和氢样电子离子中的Wichmann-Kroll校正：两种方法的比较研究

Wichmann-Kroll Correction in Muonic Atoms and Hydrogen-Like Electronic Ions: a Comparative Study of Two Methods

本文比较了两种方法在氢样电子离子和μ子系统中计算Wichmann-Kroll校正的效率和准确性，为精密光谱研究提供参考数据。

压缩双电子离子的单激发S态

Singly excited S-states of compressed two-electron ions

详细分析了球形不可穿透约束对S态双电子离子结构特性的影响。利用显关联Hylleraas基组，在Ritz变分方法框架下，计算了类氦离子（Z = 2-5）1 sns [n = 2-4]（3Se）态的能量.这里所用的相关波函数与球约束的有限边界条件是一致的。一个特定的电子配置的单重态和三重态之间的比较研究表明，偶然的简并和随后的能级交叉现象。球体内的离子感受到的热力学压力将能级推向连续。临界压力的过渡到强约束制度（其中单激发的两个电子能级交叉相应的一个电子阈值），以及为完整的不稳定也估计。

强激光场与轫致辐射γ射线或相对论离子碰撞产生非微扰正负电子对的对比研究

Comparative study of nonperturbative electron-positron pair production by intense laser fields colliding with either bremsstrahlung $γ$-rays or relativistic ions

该研究对比了强激光场与轫致辐射γ射线、相对论离子碰撞产生非微扰正负电子对的过程，发现合适参数下二者总速率物理性质相近，可利用前者实验模拟后者。

Vacuum polarization and finite nuclear size effects in the two-photon decay of hydrogen-like ions

The total two-photon decay rate of hydrogen-like ions is studied using relativistic quantum electrodynamics. In particular, we analyse how finite nuclear size and QED vacuum polarization corrections affect the decay rate. To calculate these corrections, a finite basis set method based on $B$-splines is used for the generation of quasi-complete atomic spectra and, hence, of the relativistic Green's function. By making use of this $B$-spline approach, high precision calculations have been performed for the $2s_{1/2} \to 1s_{1/2} + 2γ$ and $2p_{1/2} \to 1s_{1/2} + 2γ$ decay of hydrogen-like ions …

大动量转移相对论碰撞中轻原子对类氢重离子的激发

Excitation of heavy hydrogen-like ions by light atoms in relativistic collisions with large momentum transfers

我们提出了一个理论，在碰撞中的动量转移到原子是非常大的原子尺度上的轻靶原子激发重类氢射离子。结果表明，在这个过程中，电子和原子核的行为作为（准）自由粒子相对于彼此和它们的运动是由离子核的场。这个场对原子粒子的影响对于原子的电子引起的离子激发的贡献是至关重要的。然而，由于核质量相对非常大，在计算原子核对激发的贡献时可以忽略该场。