The ion mass spectrometer on Giotto
Abstract
The design of the Giotto ion mass spectrometer (IMS) system, its calibration, and the initial flight performance are discussed. The IMS system consists of two sensors: one optimized for the outer coma, the other for the inner coma, with each sensor obtaining complementary information in the region for which it was not optimized. Both sensors feature mass-imaging characteristics, permitting simultaneous measurements of several ion species by means of multi-detector arrays, with resultant mass per charge resolution of not less than 20. In addition to mass per charge, the energy per charge and the elevation and azimuth of the incident ions were measured during the Giotto flight.
- Publication:
-
Journal of Physics E Scientific Instruments
- Pub Date:
- June 1987
- DOI:
- 10.1088/0022-3735/20/6/034
- Bibcode:
- 1987JPhE...20..759B
- Keywords:
-
- Comet Tails;
- Giotto Mission;
- Halley'S Comet;
- Ion Distribution;
- Mass Spectrometers;
- Solar Wind;
- Bow Waves;
- Comet Nuclei;
- International Magnetospheric Study;
- Neutral Gases;
- Velocity Distribution;
- Spacecraft Instrumentation