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First multispacecraft ion measurements in and near the Earth's magnetosphere with the identical Cluster ion spectrometry (CIS) experiment, (Articolo in rivista)

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First multispacecraft ion measurements in and near the Earth's magnetosphere with the identical Cluster ion spectrometry (CIS) experiment, (Articolo in rivista) (literal)

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CLUSTER-CIS collaboration including V. Formisano, E. Amata, M.B. Bavassano Cattaneo, P. Baldetti, R. Bruno, G. Chionchio, A, M, Di Lellis, M.F. Marcucci, G. Pallocchia, (2001)
First multispacecraft ion measurements in and near the Earth's magnetosphere with the identical Cluster ion spectrometry (CIS) experiment,
in Annales geophysicae (1988)
(literal)

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CLUSTER-CIS collaboration including V. Formisano, E. Amata, M.B. Bavassano Cattaneo, P. Baldetti, R. Bruno, G. Chionchio, A, M, Di Lellis, M.F. Marcucci, G. Pallocchia, (literal)

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Scopo della missione Cluster è lo studio dei processi di plasma di piccola scala che controllano la dinamica della magnetosfera. Un esempio è lo studio dei processi che controllano la riconnessione magnetica alla magnetopausa, consentendo il trasporto di massa ed energia dal vento solare alla magnetosfera.Lo studio di questi processi è fondamentale nell'ambito delle relazioni Sole-Terra. L'articolo indicato mostra l'enorme potenzialità fornita dall'uso di più satelliti per lo studio delle regioni-chiave per la dinamica della magnetosfera. (literal)

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CESR Tolosa (Francia); UNH (USA); MPE (Germania); SSL Berkeley (USA); IFSI Roma; MPAE (Germania); UW Seattle (USA); IRF Kiruna (Svezia); Lockheed Palo Alto (USA); ESA/ESTEC (Olanda); Bern University (Svizzera); Los Alamos Nat. Lab. (USA); CCSAR Beijing (USA); IKI (Russia); University of Crete (Grecia); Comm. Energie Atomique Paris; Univ. Iowa (USA); Dartmouth College NH (USA) (literal)

Titolo

First multispacecraft ion measurements in and near the Earth's magnetosphere with the identical Cluster ion spectrometry (CIS) experiment, (literal)

Abstract

On board the four Cluster spacecraft, the Cluster Ion Spectrometry (CIS) experiment measures the full, three-dimensional ion distribution of the major magnetospheric ions (H+, He+, He++, and O+) from the thermal energies to about 40 keV/e. The experiment consists of two different instruments: a COmposition and DIstribution Function analyser (CIS1/CODIF), giving the mass per charge composition with medium (22.5°) angular resolution, and a Hot Ion Analyser (CIS2/HIA), which does not offer mass resolution but has a better angular resolution (5.6°) that is adequate for ion beam and solar wind measurements. Each analyser has two different sensitivities in order to increase the dynamic range. First tests of the instruments (commissioning activities) were achieved from early September 2000 to mid January 2001, and the operation phase began on 1 February 2001. In this paper, first results of the CIS instruments are presented showing the high level performances and capabilities of the instruments. Good examples of data were obtained in the central plasma sheet, magnetopause crossings, magnetosheath, solar wind and cusp measurements. Observations in the auroral regions could also be obtained with the Cluster spacecraft at radial distances of 46 Earth radii. These results show the tremendous interest of multispacecraft measurements with identical instruments and open a new area in magnetospheric and solar wind-magnetosphere interaction physics. (literal)

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