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Developing a phosphor-based health monitoring sensor suite for future spacecraft

机译：为未来航天器开发磷光体的健康监测传感器套件

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The desire to explore the Moon and Mars by 2030 makes cost effective and low mass health monitoring sensors essential for spacecraft development. Parameters such as impact, temperature, and radiation fluence need to be measured in order to determine the health of a human occupied vehicle. A phosphor-based sensor offers one good approach to develop a robust health monitoring system. The authors have spent the last few years evaluating physical characteristics of zinc sulfide (ZnS) phosphors. These materials emit triboluminescence (TL) which is fluorescence produced as a result of an impact. Currently, two ZnS materials have been tested for impact response for velocities from 1 m/s to 6 km/s. These materials have also been calibrated for use as temperature sensors from room temperature to 350 癈. Finally, any sensor that is intended to function in space must be characterized for response to ionizing radiation. Research to date has included irradiating ZnS with 3 MeV protons and 20 keV electrons, which are likely components of the space radiation environment. Results have shown that that the fluorescence emission intensity decreases with radiation fluence. However, radiation induced damage can be annealed at small fluence levels. This annealing not only increased light intensity of the exposed sample from excitation but also TL excitation as well.
机译：探索月球和火星到2030年的愿望使得经济效益和低质量健康监测传感器对航天器开发至关重要。需要测量诸如撞击，温度和辐射的参数，以便确定人类占用车辆的健康。基于磷光体的传感器提供了一种开发强大的健康监测系统的一种好方法。作者在过去几年中已经花了评估硫化锌（ZnS）磷光体的物理特性。这些材料发出累染因素（T1），其是由于撞击产生的荧光。目前，已经测试了两个ZnS材料，用于速度为1米/秒至6km / s的速度。这些材料也被校准，用作室温的温度传感器至350‰。最后，必须在空间中起作用的任何传感器都必须表征以响应电离辐射。迄今为止的研究已经包括用3MeV质子和20keV电子照射ZnS，这可能是空间辐射环境的组成部分。结果表明，荧光发射强度随着辐射流量而降低。然而，辐射诱导的损伤可以在小型流量水平下退火。这种退火不仅从激发中增加了暴露样品的光强度，而且也是TL激发。

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