Abstract：
In the current article, the spectral properties and electron collision (total and magnetic) excitation cross sections of ions taking placed in quantum plasmas are investigated. These cross sections are further used to study the polarization and angular distribution characteristics of the de-excitation radiation X-ray spectra, which play an important role in basic theoretical research, the diagnosis of the plasma environment, and the design of optical devices. To do so, a distorted wave method within the relativistic Dirac-Coulomb atomic structure scheme is suggested. The effective interaction potential between electrons and particles in hot quantum plasmas in the method is determined using a quantum approach that incorporates the influence of effective plasma screening effects caused by collective plasma oscillations. This potential replaces the traditional Coulomb interaction potential and is used in solving the modified Dirac equation to obtain the bound and continuum electron wave functions. Higher-order relativistic effects, such as the Breit interaction and the dominant quantum electrodynamics corrections, are added to enhance the accuracy of the method. Detailed calculations for the relativistic atomic structure and collision excitation dynamics process are carried out, taking the highly stripped H-like O7+ ion of astrophysical importance as an illustrative example. Detailed investigations are also conducted on the variation of energies, collision cross sections, and fluorescence polarizations as functions of the plasma parameters. Our results suggest that the joint effects of shielding and plasma coupling lead the energies, cross sections and fluorescence polarizations decrease (compared with the isolated case). The angular distribution of the X-ray fluorescence emission shows large change, suggesting their sensitivity to these effects. This study not only offers a valuable approach to investigating the plasma shielding and plasmon coupling effects in quantum plasmas but also holds significant relevance for applications in controlled nuclear fusion, astrophysical plasmas and so on.
摘要：
在当前的文章中，研究了放置在量子等离子体中的离子的光谱特性和电子碰撞（总和磁）激发截面。这些横截面进一步用于研究去激发辐射X射线光谱的偏振和角分布特性，在基础理论研究中发挥着重要作用，等离子体环境的诊断，和光学器件的设计。要做到这一点，提出了相对论狄拉克-库仑原子结构方案中的失真波方法。该方法中的热量子等离子体中电子与粒子之间的有效相互作用势是使用量子方法确定的，该方法结合了集体等离子体振荡引起的有效等离子体屏蔽效应的影响。该电势取代了传统的库仑相互作用势，并用于求解修正的狄拉克方程，以获得束缚和连续电子波函数。高阶相对论效应，如Breit相互作用和主要的量子电动力学校正，增加了方法的准确性。对相对论原子结构和碰撞激发动力学过程进行了详细计算,以具有天体物理学重要性的高度剥离的H样O7离子为例。还对能量的变化进行了详细的调查，碰撞横截面,和荧光偏振作为等离子体参数的函数。我们的结果表明，屏蔽和等离子体耦合的联合效应导致了能量，横截面和荧光偏振减少(与孤立的情况相比)。X射线荧光发射的角分布显示出很大的变化，表明他们对这些影响的敏感性。这项研究不仅为研究量子等离子体中的等离子体屏蔽和等离子体激元耦合效应提供了有价值的方法，而且对受控核聚变的应用具有重要意义。天体物理等离子体等等。
