Data Set Information
DATA_SET_NAME GIOTTO ION MASS SPECTROMETER HIGH INTENSITY DATA V1.0
DATA_SET_ID GIO-C-IMS-3-RDR-HIS-HALLEY-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview: 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 High Intensity Spectrometer (HIS) was designed to complement the HERS in the inner coma. Sampling Parameter Name : TIME Sampling Parameter Resolution : 8.0 Minimum Available Sampling Int : 4.0 Sampling Parameter Unit : SECOND Data Set Parameter Name : COUNTS Data Set Parameter Unit : SEC**-1
DATA_SET_RELEASE_DATE 1992-04-30T00:00:00.000Z
START_TIME 1986-03-13T11:23:02.000Z
STOP_TIME 1986-03-14T12:02:48.000Z
MISSION_NAME GIOTTO
MISSION_START_DATE 1985-07-02T12:00:00.000Z
MISSION_STOP_DATE 1992-07-10T12:00:00.000Z
TARGET_NAME HALLEY
TARGET_TYPE COMET
INSTRUMENT_HOST_ID GIO
INSTRUMENT_NAME ION MASS SPECTROMETER
INSTRUMENT_ID IMS
INSTRUMENT_TYPE ION MASS SPECTROMETER
NODE_NAME Small Bodies
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE Confidence Level Overview : N/A
CITATION_DESCRIPTION Altwegg, K., Balsiger, H., GIOTTO ION MASS SPECTROMETER HIGH INTENSITY DATA V1.0, GIO-C-IMS-3-RDR-HIS-HALLEY-V1.0, NASA Planetary Data System, 1992.
ABSTRACT_TEXT 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 High Intensity Spectrometer (HIS) was designed to complement the HERS in the inner coma.
PRODUCER_FULL_NAME INTERNATIONAL HALLEY WATCH
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