| タイトル | Development and Performance of a Suprathermal Electron Spectrometer to Study Auroral Precipitations |
| 著者（英） | Stange, Jason L.; Webster, James; Trevino, John A.; Samara, Maria; Michell, Robert G.; Ogasawara, Keiichi; Grubbs, Guy, II; Jahn, Jorg-Micha |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2016-05-24 |
| 言語 | eng |
| 内容記述 | The design, development, and performance of Medium-energy Electron SPectrometer (MESP), dedicated to the in situ observation of suprathermal electrons in the auroral ionosphere, are summarized in this paper. MESP employs a permanent magnet filter with a light tight structure to select electrons with proper energies guided to the detectors. A combination of two avalanche photodiodes and a large area solid-state detector (SSD) provided 46 total energy bins (1 keV resolution for 3-20 keV range for APDs, and 7 keV resolution for greater than 20 keV range for SSDs). Multi-channel ultra-low power application-specific integrated circuits are also verified for the flight operation to read-out and analyze the detector signals. MESP was launched from Poker F1at Research Range on 3 March 2014 as a part of ground-to-rocket electrodynamics-electrons correlative experiment (GREECE) mission. MESP successfully measured the precipitating electrons from 3 to 120 keV in 120-ms time resolution and characterized the features of suprathermal distributions associated with auroral arcs throughout the flight. The measured electrons were showing the inverted-V type spectra, consistent with the past measurements. In addition, investigations of the suprathermal electron population indicated the existence of the energetic non-thermal distribution corresponding to the brightest aurora. |
| NASA分類 | Instrumentation and Photography; Plasma Physics |
| レポートNO | GSFC-E-DAA-TN41234 |
| 権利 | Copyright |
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