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Proceedings Paper

Development of an extreme-ultraviolet imaging spectrometer for the Mercury mission
Author(s): Ichiro Yoshikawa; Tetsunori Murachi; Shingo Kameda; Atsushi Yamazaki; Shoichi Okano; Masato Nakamura
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Paper Abstract

Extreme and far ultraviolet imaging spectrometers will be boarded on the low-altitude satellite of the upcoming mercury msision (the BepiColombo mission) conducted by ISAS and ESA. The UV instrument, consisting of the two spectrometers with common electronics, aims at measuring, (1) emission lines from molecules, atoms and ions present in the Mercury's tenuous atmosphere, and (2) the reflectance spectrum of Mercury's surface. The instrument pursues a complete coverage in UV spectroscopy. The extreme UV spectrometer covers the spectral range of 30-150 nm with the field of view of 5.0 degree, and the spectrum from 130 nm to 430 nm is obtained by the far UV spectrometer. The extreme UV spectrometer employs a Mo/Si multi-layer coating to enhance its sensitivity at particular emission lines. This technology enables us to identify small ionospheric signals such as He II (30.4nm) and Na II (37.2nm), which the previous mission could not identify.

Paper Details

Date Published: 13 January 2004
PDF: 8 pages
Proc. SPIE 5193, Advances in Mirror Technology for X-Ray, EUV Lithography, Laser, and Other Applications, (13 January 2004); doi: 10.1117/12.504964
Show Author Affiliations
Ichiro Yoshikawa, Institute of Space and Astronautical Science (Japan)
Tetsunori Murachi, Institute of Space and Astronautical Science (Japan)
Shingo Kameda, Institute of Space and Astronautical Science (Japan)
Atsushi Yamazaki, Communications Research Lab. (Japan)
Shoichi Okano, Tohoku Univ. (Japan)
Masato Nakamura, Institute of Space and Astronautical Science (Japan)


Published in SPIE Proceedings Vol. 5193:
Advances in Mirror Technology for X-Ray, EUV Lithography, Laser, and Other Applications
Ali M. Khounsary; Udo Dinger; Kazuya Ota, Editor(s)

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