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Updated: Jul 12, 2026

10:42
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
概括
马射线光谱仪检测到来自苏联核卫星的辐射. 这些事件,包括正子灭绝,与卫星高度和大气密度有关.
科学领域:
- 太空物理空间物理学
- 核工程 核工程是指核工程.
- 天体物理学 天体物理学
背景情况:
- 自1980年以来,太阳最大任务 (SMM) 卫星上的马射线光谱仪 (GRS) 已经观察到过渡事件.
- 这些事件与苏联核反应堆驱动的卫星发出的辐射有关,包括类似于Cosmos 954和1402的卫星.
研究的目的:
- 为了确定SMM GRS检测到的短暂辐射事件的来源.
- 分析苏联核卫星发出的辐射的特征及其与地球地磁场的相互作用.
主要方法:
- 分析太阳最大任务 (SMM) 卫星上的马射线光谱仪 (GRS) 的数据.
- 检测到的短暂事件与苏联核反应堆驱动卫星的轨道轨道和作战状态的相关性.
- 检测玛辐射,正子灭绝线辐射 (511 keV) 和带电粒子事件.
主要成果:
- 18个不同的苏联核反应堆驱动卫星被确定为短暂事件的来源.
- 当卫星在SMM的400-500公里范围内经过时,发现了马辐射.
- 卫星发射的正子和电子云通过正子灭绝线辐射和带电粒子事件被检测到,在地磁场中存储时间高达几十分钟.
结论:
- 观察到的短暂事件直接归因于来自苏联核卫星的辐射.
- 检测到的事件的发生率差异很大 (1事件/5天到>30事件/天).
- 事件发生率强烈依赖于宇宙卫星的运行高度和上层大气密度.
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