关于高温等离子体中原子组态数量的研究

多极效应和相对论效应对热等离子体中光电离和辐射复合截面的影响

The impact of multipole and relativistic effects on photoionization and radiative recombination cross sections in hot plasmas

它示出的框架中的完全相对论的Dirac-Fock治疗的光电离和辐射复合过程，考虑到所有重要的多极的辐射场是相当重要的电子能量高于几个千电子伏。首次证明了连续电子的相对论性Maxwell-Bolzmann分布适用于高温等离子体。与通常使用的非相对论分布相比，这将辐射复合速率系数降低到几个多极。

Verification of atomic data for He- and Li-like ions employing K-spectra from the tokamak plasma

X-ray emission K-spectra of highly charged He- and Li-like argon ions recorded with high spectral, spatial, and temporal resolution at the TEXTOR tokamak were employed to develop a self-consistent approach (SCA) for deriving information on plasma parameters and the verification (estimation of accuracy) of both atomic data, needed for spectra interpretation, and methods of their calculation. The approach is based on solving the spectral inverse problem for these spectra in the framework of the semi-empirical ``spectroscopic model'' (SM) by means of two complimentary inversion methods. The SCA w…

Impact of a minority relativistic electron tail interacting with a thermal plasma containing high-atomic-number impurities

A minority relativistic electron component can arise in both laboratory and naturally-occurring plasmas. In the presence of high-atomic-number ion species, the ion charge state distribution at low bulk electron temperature can be dominated by relativistic electrons, even though their density is orders of magnitude lower. This is due to the relativistic enhancement of the collisional excitation and ionization cross sections. The resulting charge state effect can dramatically impact the radiative power loss rate and the related Bethe stopping power of relativistic electrons in a dilute plasma.

MAICRM : A general model for rapid simulation of hot dense plasmas

We propose a general model, Multi-Average Ion Collisional-Radiative Model (MAICRM), to rapid simulate the ionization and population distributions of hot dense plasmas. In MAICRM, the orbital occupation numbers of ions at the same charge stage are averaged and determined by the excitation and de-excitation processes; the populations of the average ions are determined by the ionization and recombination processes with the fixed orbital average occupation numbers in each ion. The calculated mean ionizations and charge state distributions of MAICRM are in general agreement with the other theoretic…

用Flexible Atomic Code数据模拟非局域热力学平衡等离子体

Modeling non local thermodynamic equilibrium plasma using the Flexible Atomic Code data

本文提出了一个新的程序RCF（Radiative-CollisionalCodebasedonFAC），用于模拟非局域热力学平衡条件下的稳态等离子体，特别是以光化为主的等离子体。RCF将几乎所有的原子辐射和碰撞过程都纳入速率方程中，对等离子体进行了系统的解释。灵活原子代码（FAC）提供了RCF所需的所有原子数据，保证了原子数据的计算完整性和一致性。利用与辐射源和目标等离子体相关的四个输入参数，RCF计算能级和电荷状态的总体，以及潜在的发射光谱。在初步的应用中，RCF成功地再现了光电离实验的结果与可靠的原子数据。最重要的原子过程对电荷态分布的影响也进行了讨论。

热等离子体中强高阶共振对X射线线极化的贡献

Strong higher-order resonant contributions to x-ray line polarization in hot plasmas

我们研究了高电荷铁和氪离子共振复合发射的x射线的角分布，解析了双电子、三电子和四电子通道。一个可调的电子束驱动这些过程，感应x射线由两个沿着和垂直于束轴安装的探测器记录。测量的发射不对称性全面基准全阶原子计算。我们的结论是，准确的极化诊断的热等离子体的前提下，可以得到列入高阶过程中被忽视的早期工作。