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首页> 外文期刊>Plasma and Fusion Research >Evaluation of Spectroscopic Modeling for Iron Ions and Study on Non-Equilibrium Ionization Phenomena for Solar and LHD Plasmas
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Evaluation of Spectroscopic Modeling for Iron Ions and Study on Non-Equilibrium Ionization Phenomena for Solar and LHD Plasmas

机译：铁离子光谱建模的评估以及太阳和LHD等离子体的非平衡电离现象研究

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Spectroscopic observations of EUV emission lines in the transition region (TR) and the corona provide unique information on physical conditions in the outer atmosphere of the Sun. The EUV Imaging Spectrometer (EIS) on board the Hinode satellite is capable of observing, for the first time in EUV, spectra and monochromatic images of plasmas in the solar TR and corona; these plasmas could possibly be in non-ionization-equilibrium conditions. EIS observes over two-wavelength bands of 170-210 ? and 250-290 ?, with typical time-resolutions of 1-10 seconds. Iron line emissions emerging from these wavelengths reveal that dynamic plasma accelerations and heating take place in the solar atmosphere. On the other hand, the tracer-encapsulated-pellet (TESPEL) experiments provide spectral information of EUV emission lines from iron ions produced in the Large Helical Device (LHD). Relatively cool plasmas with electron temperatures similar to those of the solar corona can be generated by controlling the neutral beam injector (NBI) system. A time-dependent collisional radiative (CR) model for elemental iron is developed as a common tool to diagnose temperatures and densities of those plasmas in the Sun and in LHD; no systematic model yet exists for iron ions in the L- and M-shell ionization stages, which are very important for coronal plasma diagnostics. Adopting the best available theoretical calculations, as well as generating the experimental data, we improve the atomic parameters of highly charged iron ions, and these results are used to extract more accurate diagnostic information out of the EIS spectra.
机译：过渡区（TR）和日冕中EUV发射线的光谱观察提供了有关太阳外部大气中物理条件的独特信息。 Hinode卫星上的EUV成像光谱仪（EIS）能够首次在EUV中观测太阳TR和日冕中等离子体的光谱和单色图像;这些等离子体可能处于非电离平衡状态。 EIS观察到170-210？的两个波段。和250-290？，典型的时间分辨率为1-10秒。从这些波长发出的铁线辐射表明，动态等离子体加速和加热发生在太阳大气中。另一方面，示踪剂包囊小球（TESPEL）实验提供了大螺旋装置（LHD）中产生的铁离子产生的EUV发射谱线的光谱信息。可以通过控制中性束注入器（NBI）系统来产生电子温度与太阳电晕相似的相对凉爽的等离子体。建立了铁元素的时变碰撞辐射（CR）模型，以作为诊断太阳和左倾角等离子体中这些等离子体的温度和密度的常用工具。 L和M壳电离阶段中铁离子的系统模型尚不存在，这对于冠状血浆诊断非常重要。通过采用最佳可用的理论计算以及生成实验数据，我们改善了高电荷铁离子的原子参数，这些结果用于从EIS光谱中提取更准确的诊断信息。

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