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Title:
New approach to 3-D, high sensitivity, high mass resolution space plasma composition measurements
Authors:
McComas, David J.; Nordholt, Jane E.
Affiliation:
AA(Los Alamos National Laboratory, NM), AB(Los Alamos National Laboratory, NM)
Publication:
(APS, DOE, and MIT, Topical Conference on High Temperature Plasma Diagnostics, 8th, Hyannis, MA, May 6-10, 1990) Review of Scientific Instruments (ISSN 0034-6748), vol. 61, pt. 2, Oct. 1990, p. 3095-3097. Research sponsored by DOE.
Publication Date:
10/1990
Category:
Plasma Physics
Origin:
STI
NASA/STI Keywords:
ELECTRIC FIELDS, ION DISTRIBUTION, LAPLACE EQUATION, MASS SPECTROMETERS, SPACE PLASMAS, COMPUTERIZED SIMULATION, EQUATIONS OF MOTION, HARMONIC OSCILLATORS, IONS
Bibliographic Code:
1990aps....61.3095M

Abstract

A novel three-dimensional space plasma composition sensor is described which combines high-sensitivity high-mass-resolution measurements in a single compact and robust design. The technique is based on the motion of ions in a cylindrically symmetric device with an axial linear electric field. High mass resolution is achieved by reflecting ions in a linearly increasing electric field, and high sensitivity is simultaneously achieved by combining this very large aperture spectrometer with a number of high throughput front-end electrostatic analyzers. It is shown that the design can be optimized for various different plasma regimes and spacecraft configurations.
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