Physics – Optics
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ssrv...91..155m&link_type=abstract
Space Science Reviews, v. 91, Issue 1/2, p. 155-195 (2000).
Physics
Optics
70
Scientific paper
The `Imager for Magnetosphere-to-Aurora Global Exploration' (IMAGE) will be launched early in the year 2000. It will be the first mission dedicated to imaging, with the capability to determine how the magnetosphere changes globally in response to solar storm effects in the solar wind, on time scales as short as a few minutes. The low energy neutral atom (LENA) imager uses a new atom-to-negative ion surface conversion technology to image the neutral atom flux and measure its composition (H and O) and energy distribution (10 to 750 eV). LENA uses electrostatic optics techniques for energy (per charge) discrimination and carbon foil time-of-flight techniques for mass discrimination. It has a 90 degx deg field-of-view in 12 pixels, each nominally 8 degx deg. Spacecraft spin provides a total field-of-view of 90 degx360 deg, comprised of 12x45 pixels. LENA is designed to image fast neutral atom fluxes in its energy range, emitted by auroral ionospheres or the sun, or penetrating from the interstellar medium. It will thereby determine how superthermal plasma heating is distributed in space, how and why it varies on short time scales, and how this heating is driven by solar activity as reflected in solar wind conditions.
Chornay Dennis J.
Collier Michael R.
Fuselier Stephen A.
Ghielmetti Arthur G.
Hamilton Douglas C.
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