概括
1966年SNAP-9A发电机瓦解释放了-238进入大气层. 分析显示,这种-238可能在重新进入过程中被烧毁并被切割成10毫米克朗颗粒.
科学领域:
- 大气中的化学成分
- 核工程 核工程是指核工程.
- 环境科学环境科学
背景情况:
- 1966年的一次事件涉及卫星核辅助电源 (SNAP-9A) 发电机的解体.
- 这一事件将-238释放到地球的平流层.
- 了解这种释放材料的命运对于环境和安全评估至关重要.
研究的目的:
- 为了确定从SNAP-9A发电机释放的-238在大气中的命运.
- 为了分析重新进入废弃的-238.8的颗粒大小分布.
- 为了证实完全燃烧和废弃假设.
主要方法:
- 对平流层-238库存的分析.
- 基于重新进入物理学的粒子大小分布估计.
- 估计颗粒大小与理论燃烧模型的比较.
主要成果:
- 平流层-238库存与SNAP-9A发电机的总量是一致的.
- 证据表明,在重新进入过程中,烧焦性-238的完全燃烧和消耗.
- 估计的算术平均颗粒大小大约为10毫米克朗.
结论:
- 在SNAP-9A发电机的-238在重新进入大气层时完全燃烧和消耗.
- 由此产生的-238颗粒非常小,平均大小为10毫米克朗.
- 这一发现支持了在太空发电机故障后对放射性物质分散的理解.
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