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

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

doi:10.2514/3.26703

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 journal › Article › peer-review

10 Scopus citations

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)
Pages (from-to)	899-904
Number of pages	6
Journal	Journal of Spacecraft and Rockets
Volume	32
Issue number	5
DOIs	https://doi.org/10.2514/3.26703
State	Published - 1995
Externally published	Yes

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Space and Planetary Science

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title = "Low-energy neutral-atom imaging techniques for remote observations of the magnetosphere",

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.",

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year = "1995",

doi = "10.2514/3.26703",

language = "English (US)",

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pages = "899--904",

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issn = "0022-4650",

publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",

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T1 - Low-energy neutral-atom imaging techniques for remote observations of the magnetosphere

AU - Funsten, Herbert O.

AU - McComas, David J.

AU - Scime, Earl E.

PY - 1995

Y1 - 1995

N2 - 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.

AB - 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.

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

Abstract

All Science Journal Classification (ASJC) codes

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