标题： 钻石负载聚酰亚胺气凝胶散射滤光片及其在天体物理和行星科学观测中的应用 显示英文标题

标题： Diamond-loaded polyimide aerogel scattering filters and their applications in astrophysical and planetary science observations

摘要： 基于气凝胶的红外阻断散射滤光片在远红外、亚毫米波和微波区域的天体物理学和行星科学仪器中有广泛的应用潜力。 本文展示了导电负载型聚酰亚胺气凝胶滤光片满足多个实验的机械和科学仪器要求的能力，包括宇宙学大角度尺度调查仪（CLASS）、低温大孔径强度测绘实验（EXCLAIM）以及亚毫米波太阳观测月球挥发物实验（SSOLVE）。 对滤光片的热多物理场模拟预测了其集成到低温接收器中的性能。 原型滤光片已成功通过至4 K的低温循环测试，机械性能无退化。 测量总半球反射率和透射率，以及在完整接收器环境中的低温测试，使能够估算滤光片的综合红外发射率。 了解发射率将有助于仪器设计者在未来行星科学、天体物理学和宇宙学实验中集成这些滤光片。 显示英文摘要

摘要： Infrared-blocking, aerogel-based scattering filters have a broad range of potential applications in astrophysics and planetary science instruments in the far-infrared, sub-millimeter, and microwave regimes. This paper demonstrates the ability of conductively-loaded, polyimide aerogel filters to meet the mechanical and science instrument requirements for several experiments, including the Cosmology Large Angular Scale Surveyor (CLASS), the Experiment for Cryogenic Large-Aperture Intensity Mapping (EXCLAIM), and the Sub-millimeter Solar Observation Lunar Volatiles Experiment (SSOLVE). Thermal multi-physics simulations of the filters predict their performance when integrated into a cryogenic receiver. Prototype filters have survived cryogenic cycling to 4\,K with no degradation in mechanical properties. Measurement of total hemispherical reflectance and transmittance, as well as cryogenic tests of the aerogel filters in a full receiver context, allow estimates of the integrated infrared emissivity of the filters. Knowledge of the emissivity will help instrument designers incorporate the filters into future experiments in planetary science, astrophysics, and cosmology.