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Use of mercuric iodide X-ray detectors with alpha backscattering spectrometers for space applicationsThe authors present X-ray fluorescence (XRF) spectra of different extraterrestrial samples taken with a mercuric iodide (HgI2) spectrometer inserted into an alpha backscattering instrument identical to that used in the Soviet Phobos mission. The results obtained with the HgI2 ambient temperature detector are compared with those obtained using an Si(Li) cryogenically cooled detector. Efforts to design an optimized instrument for space application are also described. The results presented indicate that the energy resolution and sensitivity of HgI2 detectors are adequate to meet the performance needs of a number of proposed space applications, particularly those in which cooled silicon X-ray detectors are impractical or even not usable, such as for the target science programs on geoscience opportunities for lunar surface, Mars surface, and other comet and planetary missions being planned by NASA and ESA.
Document ID
19910057871
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Iwanczyk, J. S.
(XSIRIUS Scientific, Inc. Marina Del Ray, CA, United States)
Wang, Y. J.
(XSIRIUS Scientific, Inc. Marina Del Ray, CA, United States)
Dorri, N.
(XSIRIUS Scientific, Inc. Marina Del Ray, CA, United States)
Dabrowski, A. J.
(Xsirius, Inc. Marina del Rey, CA, United States)
Economou, T. E.
(Chicago, University IL, United States)
Date Acquired
August 15, 2013
Publication Date
April 1, 1991
Publication Information
Publication: IEEE Transactions on Nuclear Science
Volume: 38
ISSN: 0018-9499
Subject Category
Spacecraft Instrumentation
Accession Number
91A42494
Funding Number(s)
CONTRACT_GRANT: NASW-4432
CONTRACT_GRANT: JPL-958767
CONTRACT_GRANT: NAGW-1847
CONTRACT_GRANT: NAGW-787
CONTRACT_GRANT: NIH-5-R01-GM-57161
Distribution Limits
Public
Copyright
Other

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