论文标题

H-和HE样离子的R-Matrix Electron-Impact激发数据,具有Z = 6-30

R-matrix electron-impact excitation data for the H- and He-like ions with Z=6-30

论文作者

Mao, Junjie, Del Zanna, G., Gu, Liyi, Zhang, Chunyu, Badnell, N. R.

论文摘要

基于广泛的原子数据建立的血浆模型对于解释观察到的宇宙光谱至关重要。在X射线带中可观察到的H类Lyman系列和类似于HE样的三胞胎是强大的诊断线,可测量各种类型的天体物理等离子体的物理特性。电子影响激发是形成H样和HE样关键诊断线的基本原子过程。广泛使用的等离子代码(ATOMDB,Chianti和Spex)采用的电子影响激发数据不一定彼此一致。在这里,我们提出了具有原子数z = 6-30(即C至Zn)的H-like和He样离子的电子障碍激发数据的系统计算。对每个离子进行了辐射阻尼的R-Matrix中间耦合框架转换计算,其配置最高$ n = 6 $。我们将目前的工作与以上三个等离子代码和文献进行了比较,以评估与当前和未来高分辨率X射线光谱仪有关的新数据的质量。

Plasma models built on extensive atomic data are essential to interpreting the observed cosmic spectra. H-like Lyman series and He-like triplets observable in the X-ray band are powerful diagnostic lines to measure the physical properties of various types of astrophysical plasmas. Electron-impact excitation is a fundamental atomic process for the formation of H-like and He-like key diagnostic lines. Electron-impact excitation data adopted by the widely used plasma codes (AtomDB, CHIANTI, and SPEX) do not necessarily agree with each other. Here we present a systematic calculation of electron-impact excitation data of H-like and He-like ions with the atomic number Z=6-30 (i.e., C to Zn). Radiation damped R-matrix intermediate coupling frame transformation calculation was performed for each ion with configurations up to $n=6$. We compare the present work with the above three plasma codes and literature to assess the quality of the new data, which are relevant for current and future high-resolution X-ray spectrometers.

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