太阳过渡区紫外光谱的观测与诊断

发布时间：2018-03-30 13:45

本文选题：太阳过渡区　切入点：紫外谱线　出处：《光谱学与光谱分析》2011年12期

【摘要】：太阳过渡区是太阳色球层顶到日冕底部的大气薄层。厚度仅几百千米,但其间太阳等离子体参数变化剧烈。过渡区的辐射多为光学薄的远紫外、极紫外发射谱线和背景连续谱线。由于地球大气的吸收,过渡区紫外光谱需通过天基观测才能实现。近几十年来,星载仪器的成功发射为太阳过渡区的研究打开了新纪元。工作回顾了太阳过渡区紫外光谱的观测历史和各类星载仪器,特别介绍了近十几年几种重要的光谱仪器。详细阐述了过渡区紫外光谱的发生率、电子密度和电子温度的诊断原理。讨论了过渡区紫外谱线的形状,并以SOHO/SUMER光谱仪为例介绍了表征谱线的几种重要参量及其物理意义。
[Abstract]:The solar transition zone is the thin layer of the atmosphere from the top of the solar chromosphere to the bottom of the corona.The thickness is only a few hundred kilometers, but the parameters of the solar plasma vary dramatically.The radiation in the transition region is mostly optical thin far ultraviolet, extreme ultraviolet emission line and background continuous line.Because of the absorption of the earth's atmosphere, the ultraviolet spectrum in the transition region can be realized only by space-based observation.In recent decades, the successful launch of spaceborne instruments has opened a new era for the study of the solar transition zone.The observational history of ultraviolet spectrum in the solar transition region and various space-borne instruments are reviewed in this paper, and several important spectroscopic instruments in the recent ten years are introduced in particular.The incidence of ultraviolet spectrum, electron density and the diagnostic principle of electron temperature in transition region are described in detail.The shape of UV line in transition region is discussed. Some important parameters and their physical significance are introduced with SOHO/SUMER spectrometer as an example.
【作者单位】：中国科学技术大学地球与空间科学学院;安徽建筑工业学院数理系;
【基金】：科技部(973)项目(2011CB811403) 国家自然科学基金项目(40904046,40774080) 安徽建筑工业学院青年科研基金项目(20104019)资助
【分类号】：P182.3

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