钾原子滤光器在太阳高分辨率观测中的应用
发布时间：2019-03-14 14:54
【摘要】：太阳高分辨率速度场观测系统可用于探测日震的活动信息,对太阳内部结构的研究具有重要意义。探讨了双峰钾原子滤光器在太阳光球层速度场观测中的应用方法,即利用法拉第反常色散原子滤光器(FADOF)的高光谱分辨率和光谱稳定性等优点,采用双峰钾原子滤光器分辨来自太阳光球层钾线(769.898nm)光谱的多普勒频移,并提出用F-P标准具对透过原子滤光器的双峰信号进行光学选支,从而获得太阳光球层多普勒速度场图像。研制出双透射峰钾原子滤光器原理样机,经测试其谱型与理论谱型符合良好,满足太阳速度场高分辨率观测的需要。将此技术方案扩展到太阳的其他谱线,可实现对太阳大气多层次速度场的同时观测。
[Abstract]:The solar high-resolution velocity field observation system can be used to detect the active information of solar earthquakes, which is of great significance to the study of solar internal structure. The application of double-peak potassium atomic filter in the observation of solar spherical layer velocity field is discussed in this paper. The advantages of Faraday anomalous dispersion atomic filter (FADOF) such as high spectral resolution and spectral stability are discussed. The double peak potassium atomic filter is used to distinguish the Doppler frequency shift from the potassium line (769.898nm) spectrum of the solar sphere layer, and the optical branch selection of the double peak signal through the atomic filter is proposed by using the FP standard instrument. Thus, the Doppler velocity field image of the solar sphere layer is obtained. The principle prototype of double transmission peak potassium atomic filter has been developed. Its spectrum type is in good agreement with the theoretical spectrum type, which meets the needs of high resolution observation of solar velocity field. The scheme can be extended to other spectral lines of the sun, and the multi-level velocity field of the solar atmosphere can be observed simultaneously.
【作者单位】： 武汉大学测绘遥感信息工程国家重点实验室;中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室;中国科学院研究生院;中国科学院国家天文台;
【基金】：国家973计划(2009CB723905) 国家自然科学基金(10978003,41101334)资助课题
【分类号】：TN713;P111.41
本文编号：2440085
[Abstract]:The solar high-resolution velocity field observation system can be used to detect the active information of solar earthquakes, which is of great significance to the study of solar internal structure. The application of double-peak potassium atomic filter in the observation of solar spherical layer velocity field is discussed in this paper. The advantages of Faraday anomalous dispersion atomic filter (FADOF) such as high spectral resolution and spectral stability are discussed. The double peak potassium atomic filter is used to distinguish the Doppler frequency shift from the potassium line (769.898nm) spectrum of the solar sphere layer, and the optical branch selection of the double peak signal through the atomic filter is proposed by using the FP standard instrument. Thus, the Doppler velocity field image of the solar sphere layer is obtained. The principle prototype of double transmission peak potassium atomic filter has been developed. Its spectrum type is in good agreement with the theoretical spectrum type, which meets the needs of high resolution observation of solar velocity field. The scheme can be extended to other spectral lines of the sun, and the multi-level velocity field of the solar atmosphere can be observed simultaneously.
【作者单位】： 武汉大学测绘遥感信息工程国家重点实验室;中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室;中国科学院研究生院;中国科学院国家天文台;
【基金】：国家973计划(2009CB723905) 国家自然科学基金(10978003,41101334)资助课题
【分类号】：TN713;P111.41
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