Additively manufactured plastic plasma spectrometer.

IF 1.3 4区 工程技术 Q3 INSTRUMENTS & INSTRUMENTATION Review of Scientific Instruments Pub Date : 2024-11-01 DOI:10.1063/5.0219571
Quetzal Larrick, Craig Pollock, Donald Hampton, Levon Avanov, Daniel Gershman, Denise Thorsen, Greg Shipman, Jesse Atencio, Anthony Melkomukov
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Abstract

We report results in the development and testing of a low resource tophat electrostatic analyzer (ESA) for space plasma measurements. This device has been additively manufactured (3D-printed) using fused deposition modeling. The classic tophat design is composed of four plastic pieces, without any surface coatings. The three conducting electrodes are printed from carbon nanotube infused polyether ether ketone (CNT-PEEK). The fourth piece, an insulating electrode support, uses pure PEEK. This ESA is designed to detect electrons in space from 10 eV up to 30 keV. We demonstrate that the printed CNT-PEEK is sufficiently electrically conductive to support the fast high voltage slewing often required for high time resolution measurements. The plastic ESA has been successfully vibrated beyond standard pre-flight levels, tested under keV electron beam illumination over a wide range of temperatures, and tested under UV illumination, simulating the solar Ly-α flux. In comparison with an identical machined aluminum ESA, our CNT-PEEK ESA provides nominal energy/angle bandpasses, closely matching simulation. These bandpasses imply minimal impact from surface charging at beam energies of 2-3 keV, although more investigation is needed. We also find that the CNT-PEEK ESA provides far superior out-of-band electron rejection and UV photon rejection compared to the machined aluminum ESA. We do not detect any problems with trapped gases or outgassing. This development offers the potential for significant mass savings, implementation of otherwise unattainable geometric configurations, and dramatic simplification in manufacturing and assembly processes required for the development of space plasma instruments.

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塑料等离子体光谱仪。
我们报告了用于空间等离子体测量的低资源顶帽静电分析仪(ESA)的开发和测试结果。该设备是利用熔融沉积建模技术添加制造(三维打印)的。经典的顶帽设计由四块塑料片组成,没有任何表面涂层。三个导电电极由碳纳米管注入聚醚醚酮(CNT-PEEK)打印而成。第四块是绝缘电极支架,使用纯 PEEK。该 ESA 设计用于探测 10 eV 至 30 keV 的空间电子。我们证明,印刷的 CNT-PEEK 具有足够的导电性,能够支持高时间分辨率测量所需的快速高压回转。塑料 ESA 已成功振动到超过标准飞行前水平,在 keV 电子束照射下进行了大范围温度测试,并在模拟太阳 Ly-α 通量的紫外线照射下进行了测试。与相同的机加工铝质 ESA 相比,我们的 CNT-PEEK ESA 具有额定的能量/角度带通,与模拟结果非常接近。这些带通意味着在 2-3 keV 的光束能量下,表面充电的影响微乎其微,但还需要更多的研究。我们还发现,与加工铝质 ESA 相比,CNT-PEEK ESA 的带外电子抑制和紫外线光子抑制能力要强得多。我们没有检测到任何滞留气体或放气问题。这项研发成果有望显著减轻质量,实现原本无法实现的几何配置,并大大简化空间等离子体仪器开发所需的制造和组装流程。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Review of Scientific Instruments
Review of Scientific Instruments 工程技术-物理:应用
CiteScore
3.00
自引率
12.50%
发文量
758
审稿时长
2.6 months
期刊介绍: Review of Scientific Instruments, is committed to the publication of advances in scientific instruments, apparatuses, and techniques. RSI seeks to meet the needs of engineers and scientists in physics, chemistry, and the life sciences.
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