Low-energy neutral-atom imaging techniques for remote observations of the magnetosphere

Herbert O. Funsten, David J. McComas, Earl E. Scime

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


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 languageEnglish (US)
Pages (from-to)899-904
Number of pages6
JournalJournal of Spacecraft and Rockets
Issue number5
StatePublished - 1995
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science


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