Medium energy ion mass and neutral atom spectrometer

Autor:	B. R. Higgins, A. G. Ghielmetti, K. L. Appert, D. O. Murray, S. J. Battel, H. D. Voss, R. R. Vondrak, E. Hertzberg
Rok vydání:	1992
Předmět:	Materials science Energetic neutral atom Spectrometer Aerospace Engineering chemistry.chemical_element Mass spectrometry Ion Secondary ion mass spectrometry symbols.namesake chemistry Space and Planetary Science Van Allen radiation belt symbols Atomic physics Helium Hybrid mass spectrometer
Zdroj:	Journal of Spacecraft and Rockets. 29:566-569
ISSN:	1533-6794 0022-4650
DOI:	10.2514/3.25500
Popis:	The primary objective of the medium energy ion mass spectrometer (ONR 307-8-3) on the CRRES is to obtain the necessary data to construct models of the energetic ion (10-2000 keV-amu/q) and neutral atom (10-1500 keV) environment of the Earth's radiation belts. The spectrometer measures the energetic ion composition, energy spectrum, charge, and pitch angle distribution with good mass, temporal, and spatial resolution. The ion rejection in the neutral detector is < 100 MeV-amu/q. The instrument principle of operation is based on ion momentum separation in a 7000-G magnetic field followed by energy and mass defect analysis using an array of cooled silicon solid-state detectors. The architecture is parallel with simultaneous mass and energy analysis at relatively high sensitivity (100% duty cycle). The instrument performed as designed in orbit with the major groups of hydrogen, helium, oxygen, and neutrals clearly resolved. The energetic ion composition during the August 26, 1990, storm illustrates the instrument performance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8646f5c61cb3217a70e98499e2494b82 https://doi.org/10.2514/3.25500 Zobrazit plný text záznamu