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

By H. Rème, C. Aoustin, J. Bosqued, I. Dandouras, B. Lavraud, J. Sauvaud, A. Barthe, J. Bouyssou, T. Camus, O. Coeur-Joly and 68 more. 2001

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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 4–6 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. Key words. Magnetospheric physics (magnetopause, cusp and boundary layers; magnetopheric configuration and dynamics; solar wind - magnetosphere interactions)

Subfields: Astronomy and Astrophysics, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/f76f5e9e36d8a05f3666f92b2a3a57058b246def

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Citations in the corpus

Motion of the dipolarization front during a flow burst event observed by Cluster (2002, methodology): “Here we referred to the magnetic field disturbances using the method introduced by Sergeev et al. [1996] for the analysis of the bubble based on plasma bubble model [Chen and Wolf, 1993].”
Anisotropy of Alfvénic turbulence in the solar wind and numerical simulations (2010, methodology): “In the analysis, we use 4-s measurements of the magnetic field from the fluxgate magnetometer (FGM) (Balogh et al. 2001) and velocity and density moments from the Cluster ion spectrometer (CIS) (Rème et al. 2001).”
Electron density estimations derived from spacecraft potential measurements on Cluster in tenuous plasma regions (2008, background): “…and monitoring of natural magnetoplasma waves in the 4–83 kHz range to evaluate the thermal electron density [Décréau et al.,1997]; Cluster Ion Spectrometer (CIS) measures the full three-dimensional ion distribution of the major ion species from thermal energies to 40 keV/e [Rème et al., 2001].”
Average properties of the magnetic reconnection ion diffusion region in the Earth's magnetotail: The 2001–2005 Cluster observations and comparison with simulations (2009, methodology): “Ion plasma data were measured by the Cluster Ion Spectrometry (CIS) Hot Ion Analyzer (HIA) experiment [Rème et al., 2001], available on Cluster 1 and Cluster 3.”
Evolution of dipolarization in the near-Earth current sheet induced by Earthward rapid flux transport (2009, methodology): “In this study we use Cluster data from the FluxGate Magnetometer (FGM) experiment (Balogh et al., 2001), the Electric Field and Wave (EFW) instrument (Gustafsson et al., 2001), and by the Cluster ion spectrometry (CIS) experiment (Rème et al., 2001).”
Cluster observations of continuous reconnection at the magnetopause under steady interplanetary magnetic field conditions (2004, methodology): “The CIS experiments obtain full threedimensional ion distributions with high-time resolution (one 4-s spacecraft spin) and with mass-per-charge composition determination.”
Local structure of the magnetotail current sheet: 2001 Cluster observations (2006, methodology): “The profiles of the electric current density versus distance from the sheet center (where Bl=0) showed a very thick sheet ( h≤10000 km) with low current density ( j∼4 nA/m2) for the first crossing, a much thinner and more intensive ( h∼2500 km andj∼15 nA/m2) sheet with a slightly asymmetric maximum ”
A statistical and event study of magnetotail dipolarization fronts (2011, methodology): “…we used the 4-s averaged magnetic field data obtained by the Flux Gate Magnetometer (FGM, Balogh et al., 2001) and plasma data from the Composition Ion Spectrometer (CIS,Rème et al., 2001) on Cluster 1, and throughout the paper the Geocentric Solar Magnetospheric (GSM) coordinate system is used.”
Plasmaspheric Density Structures and Dynamics: Properties Observed by the CLUSTER and IMAGE Missions (2009, methodology): “D ion distribution functions measured by the Cluster Ion Spectrometry (CIS) experiment (Rème et al. 2001), or the electric field measured by the Electric Field and Wave (EFW) instrument (Gustafsson et al. 2001) and the Electron Drift Instrument (EDI), (Paschmann et al. 2001).”