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

我们已经开始了极紫外光学系统的发展，以探测极风中氧离子的散射极紫外辐射（O II）。氢吸收池和不反射莱曼-α的反射镜是消除地冕中莱曼-α线的关键。2000年，我们研制了搭载在SS-520 - 2探空火箭上的极紫外扫描仪XUV。SS-520 - 2探空火箭于2000年12月4日从斯瓦尔巴德火箭实验场发射，并在磁层尖区下飞行。尽管XUV扫描仪对OII辐射的灵敏度不高，但用于探测极区w333ind和电离层F层OII辐射的XUV扫描仪已成功运行。足够的积累时间使我们能够探测到来自电离层F层和极风的OII辐射。这是首次尝试通过光学遥感获取地球周围氧离子分布的二维图像。

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.