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GIOTTO Ion Mass Spectrometer (High Energy Range) observations of
1P/Halley
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Citation |
Altwegg, K., Balsiger, H., GIOTTO ION MASS SPECTROMETER HIGH
ENERGY RANGE DATA V1.0, GIO-C-IMS-3-RDR-HERS-HALLEY-V1.0, NASA
Planetary Data System, 1992. |
Digital Object Identifier (DOI) |
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Data Set Abstract |
A wide range of ion species and velocity distributions are
expected to be found as the Giotto spacecraft traverses the coma
of Halley's Comet. The outer coma is characterized by the
interaction between solar wind and cometary plasmas, the inner
coma by the outflow of cometary neutrals and their ionization
products. The resultant demands on instrument dynamic range
preclude use of a single sensor for measurements of ion
composition. The Giotto Ion Mass Spectrometer (IMS) therefore
consists of two sensors: one optimized for the outer and the
other for the inner coma, with each obtaining complementary
information in the region for which it is not optimized. Both
sensors feature mass imaging characteristics, thereby permitting
simultaneous measurements of several ion species by means of
multi-detector arrays. The prime objective of the High-Energy
Range Spectrometer (HERS) is to measure the ion abundances and
three-dimensional velocity distributions outside the cometary
contact surface. |
Search/Access Data |
SBN Comet Website
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Additional Information |
Mission Information |
GIOTTO
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Data Set Information |
GIO-C-IMS-3-RDR-HERS-HALLEY-V1.0 |
Instrument Host Information |
GIO
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Instrument Information |
IMS
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Target Information |
HALLEY
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