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首页> 外文会议>Nanophotonics and macrophotonics for space environments V >Proton radiation testing of laser optical components for NASA Jupiter Europa Orbiter Mission
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Proton radiation testing of laser optical components for NASA Jupiter Europa Orbiter Mission

机译：美国宇航局木星欧罗巴轨道飞行器激光光学部件的质子辐射测试

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The Jupiter Europa Orbiter (JEO) is NASA's element of the joint Europa Jupiter System Mission (EJSM). Based on current trajectories, the spacecraft will spend a significant amount of time in the Jovian radiation belts. Therefore, research endeavors are underway to study the radiation effects on the various parts and components needed to implement the instruments. Data from these studies will be used for component selection and system design to ensure reliable operation throughout the mission duration. The radiation environment en route to Jupiter is nothing new for NASA designed systems, however, the long durations orbiting Jupiter and Europa present new challenges for radiation exposure. High-energy trapped electrons and protons at Jupiter dominate the expected radiation environment. Therefore, most of the initial component level radiation testing is being conducted with proton exposure. In this paper we will present in-situ monitoring of the optical transmission of various laser optical components during proton irradiation. Radiation induced optical attenuation of some components is less than would be expected, based on the authors experiences, and is attributed to the interaction of the protons with the materials. The results are an encouraging first step in screening these optical materials for spaceflight in a high radiation environment.
机译：木星木卫二轨道器（JEO）是美国宇航局联合木卫二木星系统任务（EJSM）的组成部分。根据当前的轨迹，该航天器将在木星辐射带中花费大量时间。因此，正在进行研究以研究辐射对实现仪器所需的各个零件和组件的影响。这些研究的数据将用于组件选择和系统设计，以确保整个任务期间的可靠运行。对于NASA设计的系统而言，到达木星的辐射环境并不是什么新鲜事物，但是，木星和木卫二的长时间轨道运行对辐射暴露提出了新的挑战。木星上的高能俘获电子和质子主导了预期的辐射环境。因此，大多数初始组分水平的辐射测试都是在质子暴露下进行的。在本文中，我们将介绍质子辐照过程中各种激光光学组件的光学传输的原位监测。根据作者的经验，某些成分的辐射诱导的光衰减小于预期，这归因于质子与材料的相互作用。该结果是在高辐射环境中筛选这些光学材料用于太空飞行的令人鼓舞的第一步。

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