This data set lists counts as a function of either angular position or energy level. The data were obtained from the Ion Mass Spectrometer (IMS) High Intensity Spectrometer (HIS) instrument flown aboard the GIOTTO spacecraft during its extended mission to fly by comet 26P/Grigg-Skjellerup. These data have not been formally reviewed by PDS.

This dataset contains count rates from the Energetic Particle Analyser (EPA) experiment aboard the Giotto spacecraft during its flyby of comet P/Grigg-Skjellerup during July of 1992. These data were not formally reviewed by the PDS.

This dataset contains count rates from the Energetic Particle Analyser (EPA) experiment aboard the Giotto spacecraft during its flyby of comet P/Grigg-Skjellerup during July of 1992. These data were not formally reviewed by the PDS.

This data set contains the results for the Implanted Ion Sensor (IIS) of the Johnstone Particle Analyser (JPA) instrument flown aboard the GIOTTO spacecraft during its extended mission to fly by comet P/Grigg-Skjellerup. The IIS instrument produced data in three modes during the encountered, labelled as 'D4D', 'STC' and 'TOF'. The files in this data set present the results obtained in those modes in the form of flat ASCII files.

This data set contains the results for the Implanted Ion Sensor (IIS) of the Johnstone Particle Analyser (JPA) instrument flown aboard the GIOTTO spacecraft during its extended mission to fly by comet P/Grigg-Skjellerup. The IIS instrument produced data in three modes during the encountered, labelled as 'D4D', 'STC' and 'TOF'. The files in this data set present the results obtained in those modes in the form of flat ASCII files.

This data set contains combined and correlated results from the Johnstone Particle Analyser (JPA) and magnetometer experiments flown aboard the Giotto spacecraft during its extended mision to fly by comet P/Grigg-Skjellerup. These data have not been formally reviewed.

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.

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.

This dataset contains the results obtained from the Dust Impact Detection System (DIDSY) flown aboard the GIOTTO spacecraft during its extended mission to Comet P/Grigg-Skjellerup in 1992. The measurements and analysis of the three impacts detected during close approach are contained in text files. Calibration tables for the sensors are included in this dataset. These data have not been reviewed or formally archived with the PDS.

This dataset contains the results obtained from the Dust Impact Detection System (DIDSY) flown aboard the GIOTTO spacecraft during its extended mission to Comet P/Grigg-Skjellerup in 1992. The measurements and analysis of the three impacts detected during close approach are contained in text files. Calibration tables for the sensors are included in this dataset. These data have not been reviewed or formally archived with the PDS.