Development of EUV optics for Oxygen ion imagery in the polar wind

用于极风中氧离子图像的 EUV 光学器件的开发

• 批准号: 10440135
• 负责人: NAKAMURA Masato
• 金额: $ 9.34万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10440135/
• 关键词: Oxygen ion; Polar wind; Resonance scattering; Plasma Imagery; 極端紫外線

We have started the development of the EUV optics to detect the scattered EUV emission (O II) by the Oxygen ions in the polar wind. Hydrogen absorption cell and the mirror which does not reflect Lyman-α will be the key to eliminate the Lyman α line from the Geocorona. In 2000, we have developed the extreme-ultraviolet scanner XUV boarded on the sounding rocket SS-520-2.The sounding rocket SS-520-2 was launched from the Svalbard Rocket Experiment Site on December 4, 2000, and flew under the magnetospheric cusp region. The XUV scanner designed to detect the OII emission from the polar w333ind and the ionospheric F layer was successfully operated.In spite of the fact that the XUV scanner is not necessarily very sensitive to the OII emission. the sufficient accumulation time enabled us to detect the OII emissions from the ionospheric F layer and the polar wind. This success is the first attempt to take two-dimensional images of the oxygen ion distribution around the earth via the optical remote sensing.

我们已经开始开发 EUV 光学器件，以检测极地风中氧离子的散射 EUV 发射 (O II)。氢吸收池和不反射莱曼α的镜子将是消除地冕上莱曼α线的关键。 2000年，我们研制了搭载在探空火箭SS-520-2上的极紫外扫描仪XUV。探空火箭SS-520-2于2000年12月4日从斯瓦尔巴火箭实验场发射升空，飞越磁层尖点区域。设计用于探测极地w333ind和电离层F层的OII发射的XUV扫描仪已成功运行。尽管XUV扫描仪不一定对OII发射非常敏感。足够的积累时间使我们能够探测到电离层F层和极地风的OII发射。此次成功是首次尝试通过光学遥感拍摄地球周围氧离子分布的二维图像。