Abstract
The Cluster Ion Spectrometry (CIS) experiment is a comprehensive ionic plasma spec-trometry package on-board the four Cluster spacecraft capable of obtaining full three-dimensional ion distributions with good time resolution (one spacecraft spin) with mass per charge composition determination. The requirements to cover the scientific objectives cannot be met with a single instrument. The CIS package therefore consists of two different instruments, a Hot Ion Analyser (HIA) and a time-of-flight ion Composition and Distribution Function analyser (CODIF), plus a sophisticated dual-processor-based instrument-control and Data-Processing System (DPS), which permits extensive on-board data-processing. Both analysers use symmetric optics resulting in continuous, uniform, and well-characterised phase space coverage. CODIF measures the distributions of the major ions (H+, He+, He++, and O+) with energies from -0 to 40 keV/e with medium (22.5°) angular resolution and two different sensitivities. HIA does not offer mass resolution but, also having two different sensitivities, increases the dynamic range, and has an angular resolution capability (5.6° × 5.6°) adequate for ion-beam and solar-wind measurements.
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© 1997 Springer Science+Business Media Dordrecht
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Rème, H. et al. (1997). The Cluster Ion Spectrometry (CIS) Experiment. In: Escoubet, C.P., Russell, C.T., Schmidt, R. (eds) The Cluster and Phoenix Missions. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5666-0_12
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DOI: https://doi.org/10.1007/978-94-011-5666-0_12
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