The Development of a Neutral Particle Detector for Observations of the Thermosphere

Details The Development of a Neutral Particle Detector for Observations of the Thermosphere The Development of a Neutral Particle Detector for Observations of the Thermosphere

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm21d..04s&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM21D-04

Computer Science

Sound

2194 Instruments And Techniques, 2494 Instruments And Techniques, 2794 Instruments And Techniques, 5494 Instruments And Techniques, 6994 Instruments And Techniques (1241)

Scientific paper

One of the least understood regions of the upper atmosphere is the thermosphere, principally due to the difficulty of making observations. The neutral atmosphere is known to be highly variable, and its composition and density varies by several orders of magnitude due to solar activity, diurnal cycles, latitude, geomagnetic activity, and gravity waves. In the past, most in-situ measurements of the neutral atmosphere have utilized detectors that are dependent on arrival angle and energy accommodation of incoming species, so that information related to nascent velocity distribution and reactive species abundances is often masked. This paper will review design concepts and laboratory tests related to the development of a novel open-ionizer, neutral particle detector for space environment measurements which can overcome these limitations. The sensor features a very large field-of-view suitable for sounding rocket missions. This time-of-flight instrument uses electron impact ionization with an energy filter, hemispherical ion optics, and a microchannel plate detector / cross-delay line anode for position-sensitive, single event pulse counting.

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