Abstract
Recent developments in the detection of neutral atoms will enable construction of space-based imagers that may reveal the global structure and dynamics of the terrestrial magnetosphere. The principal technical challenge of imaging low-energy neutral atoms having energies <30 keV is separating them from the intense uv background, to which their detectors are sensitive, with minimal loss of trajectory and energy information. Three instrument concepts for separating low-energy neutral atoms from the background uv are discussed: neutral-atom ionization via transmission through an ultrathin carbon foil and subsequent electrostatic deflection, uv grating polarizers and attenuators, and high-frequency shutters. Hardware associated with each of these concepts is mated to a detector section that provides trajectory, coincidence, and, if required, time-of-fiight measurements.
Original language | English (US) |
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Pages (from-to) | 899-904 |
Number of pages | 6 |
Journal | Journal of Spacecraft and Rockets |
Volume | 32 |
Issue number | 5 |
DOIs | |
State | Published - 1995 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Aerospace Engineering
- Space and Planetary Science