The soft x-ray photon-counting spectroscopic imager for the sun
The soft x-ray photon-counting spectroscopic imager for the sun
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DOI：
10.1117/12.2024753
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发表时间：
2013-09
期刊：
影响因子：
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通讯作者：
T. Sakao;N. Narukage;M. Shimojo;Kyoko Watanabe;Y. Suematsu;S. Imada;S. Ishikawa
中科院分区：
文献类型：
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作者：
T. Sakao;N. Narukage;M. Shimojo;Kyoko Watanabe;Y. Suematsu;S. Imada;S. Ishikawa
我们介绍了用于日冕的软x射线光子计数光谱成像仪的科学和开发活动，我们认为这可能是日本solar -c任务的科学有效载荷。成像仪采用了Wolter-I型掠入射扇形反射镜，可以在宽温度范围（1 MK至10 MK以上）内拍摄日冕图像，具有有史以来最高的角分辨率（焦距为4米时为0.5英寸/像素），是太阳的x射线望远镜。此外，通过采用后薄CMOS图像传感器作为焦平面器件，我们试图实现光子计数能力，从而首次在~0.5 keV到10 keV的能量范围内进行x射线日冕的成像光谱。成像光谱观测将提供关于磁重联机制的全新信息，在耀斑期间重联磁结构中超热电子的产生，以及热日冕等离子体（加热超过几MK）的产生，这可能是太阳活动区域热核形成的原因。
We present science and development activities of the soft X-ray photon-counting spectroscopic imager for the solar corona that we conceive as a possible scientific payload for the Japanese Solar-C mission. The imager employs a grazing-incidence sector mirror of Wolter-I type with which images of the corona are to be taken in a wide temperature range (1 MK to beyond 10 MK) with the highest-ever angular resolution (0.5"/pixel for a focal length of 4 m) as an Xray telescope for the Sun. Moreover, by employing a back-thinned CMOS image sensor as the focal-plane device, we attempmt to implement photon-counting capability with which imaging-spectroscopy of the X-ray corona will be performed for the first time, in the energy range from ~0.5 keV up to 10 keV. The imaging-spectroscopic observations will provide totally-new information on mechanism(s) for magnetic reconnection, generation of supra-thermal electrons in the reconnecting magnetic structure during flares, and for the generation of hot coronal plasmas (heated beyond a few MK) which may be responsible for the formation of the hot cores of solar active regions.