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

机译：为未来的航天器开发基于荧光粉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℃. 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：到2030年探索月球和火星的愿望使得具有成本效益的低质量健康监测传感器对于航天器的发展至关重要。需要确定诸如冲击，温度和辐射通量之类的参数，以便确定人类所乘车辆的健康状况。基于磷的传感器提供了一种开发健壮的健康监控系统的好方法。作者在过去的几年中一直在评估硫化锌（ZnS）荧光粉的物理特性。这些材料发出三聚光（TL），这是由于撞击而产生的荧光。目前，已经测试了两种ZnS材料对1 m / s至6 km / s速度的冲击响应。这些材料也已经过校准，可用作从室温到350℃的温度传感器。最后，任何旨在在太空中运行的传感器都必须对电离辐射做出响应。迄今为止的研究包括用3 MeV质子和20 keV电子照射ZnS，这很可能是空间辐射环境的组成部分。结果表明，荧光发射强度随辐射通量而降低。但是，辐射引起的损坏可以在小注量水平上退火。该退火不仅增加了来自激发的暴露样品的光强度，而且还增加了TL激发。

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