NDLI: The Extreme Ultraviolet Imager Investigation for the IMAGE Mission

Content Provider	Springer Nature Link
Author	Sandel, B.R. Broadfoot, A.L. Curtis, C.C. King, R.A. Stone, T.C. Hill, R.H. Chen, J. Siegmund, O.H.W. Raffanti, R. Allred, DAVID D. Turley, R. STEVEN Gallagher, D.L.
Copyright Year	2000
Abstract	The Extreme Ultraviolet Imager (EUV) of the IMAGE Mission will study the distribution of He$^{+}$ in Earth's plasmasphere by detecting its resonantly-scattered emission at 30.4 nm. It will record the structure and dynamics of the cold plasma in Earth's plasmasphere on a global scale. The 30.4-nm feature is relatively easy to measure because it is the brightest ion emission from the plasmasphere, it is spectrally isolated, and the background at that wavelength is negligible. Measurements are easy to interpret because the plasmaspheric He$^{+}$ emission is optically thin, so its brightness is directly proportional to the He$^{+}$ column abundance. Effective imaging of the plasmaspheric He$^{+}$ requires global `snapshots’ in which the high apogee and the wide field of view of EUV provide in a single exposure a map of the entire plasmasphere. EUV consists of three identical sensor heads, each having a field of view 30° in diameter. These sensors are tilted relative to one another to cover a fan-shaped field of 84°×30°, which is swept across the plasmasphere by the spin of the satellite. EUV’s spatial resolution is 0.6° or ∼0.1 R $_{E}$ in the equatorial plane seen from apogee. The sensitivity is 1.9 count s$^{−1}$ Rayleigh$^{−1}$, sufficient to map the position of the plasmapause with a time resolution of 10 min.
Starting Page	197
Ending Page	242
Page Count	46
File Format	PDF
ISSN	00386308
Journal	Space Science Reviews
Volume Number	91
Issue Number	1-2
e-ISSN	15729672
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2000-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Astronomy, Astrophysics and Cosmology Extraterrestrial Physics, Space Sciences
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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