Print Email Facebook Twitter Dual-band Fourier-transform Millimeter-wave Spectrometry for In Situ Gas Sensing Title Dual-band Fourier-transform Millimeter-wave Spectrometry for In Situ Gas Sensing Author Drouin, Brian J. (California Institute of Technology) Nemchick, Deacon J. (California Institute of Technology) Nole, Ananda (Howard University) Tang, Adrian (California Institute of Technology) Wu, Chung Tse Michael (Rutgers University Piscataway) Khiabani, Neda (Rutgers University Piscataway) Alonso Del Pino, M. (TU Delft Tera-Hertz Sensing) Chang, Mau Chung Frank (University of California) Date 2023 Abstract The exploration of icy body composition in the solar system has often involved spectroscopic measurements of volatiles detected with remote sensing, such measurements portray materials naturally expelled from the surface that enter the exosphere and potentially escape into space. Variations in the ratio of deuterium and hydrogen in these measurements have led to inconclusive hypotheses regarding potential cometary origins of Earth’s ocean water and/or organics. Observational biases regarding unknown previous processing of the observable ejected materials necessitates studies of more dormant, less-processed bodies. Landed missions on comets have brought focus onto the development of small, sensitive instrumentation capable of similar composition measurements of the nascent surface and near-surface materials. We present an evolution of our compact Fourier-transform millimeter-wave cavity spectrometer that is tuned for sensitivity at 80.6 and 183 GHz where HDO and H2O exhibit resonance features. We discuss both a low-SWaP (size-weight and power) architecture that uses custom microchip transceiver elements as well as a modular configuration using traditional GaAs-based millimeter-wave hardware. New design features for these systems including quartz-based coupling elements, system thermal management, and a separable clocking board are discussed in addition to sensitivity studies and applications in potential mission scenarios. To reference this document use: http://resolver.tudelft.nl/uuid:a24fa6c1-38a8-4c96-b442-b07d05ad67fc DOI https://doi.org/10.3847/PSJ/acd348 Source Planetary Science Journal, 4 (6) Part of collection Institutional Repository Document type journal article Rights © 2023 Brian J. Drouin, Deacon J. Nemchick, Ananda Nole, Adrian Tang, Chung Tse Michael Wu, Neda Khiabani, M. Alonso Del Pino, Mau Chung Frank Chang Files PDF Drouin_2023_Planet._Sci._ ... _4_100.pdf 1.5 MB Close viewer /islandora/object/uuid:a24fa6c1-38a8-4c96-b442-b07d05ad67fc/datastream/OBJ/view