HR: 0800h
AN: SM21A-0449 [Abstracts]
TI: Ion Acceleration in the Plasma Sheet Boundary Layers
AU: * Sauvaud, J
EM: sauvaud@cesr.fr
AF: CESR, 9, av. du Colonel Roche, Toulouse, 31028
France
AU: Maggiolo, R
EM: maggiolo@cesr.fr
AF: CESR, 9, av. du Colonel Roche, Toulouse, 31028
France
AU: Louarn, P
EM: louarn@cesr.fr
AF: CESR, 9, av. du Colonel Roche, Toulouse, 31028
France
AU: Roux, A
EM: alain.roux@cetp.ipsl.fr
AF: CETP, 10-12, avenue de l'Europe, Velizy, 78140
France
AU: Cornilleau, N
EM: nicole.cornilleau@cetp.ipsl.fr
AF: CETP, 10-12, avenue de l'Europe, Velizy, 78140
France
AU: Kistler, L
EM: lynn.kistler@unh.edu
AF: Space Science Center, 39 College Road, Durham, NH 03824
United States
AU: Lucek, E
EM: e.lucek@ic.ac.uk
AF: Space and Atmospheric Physics, Imperial College, London, SW7 2BZ
United Kingdom
AU: Andre, M
EM: mats.andre@irfu.se
AF: Swedish Institute of Space Physics, Uppsala Division, Uppsala, SE-751 21
Sweden
AU: Decreau, P
EM: pdecreau@cnrs-orleans.fr
AF: LPCE/CNRS, 3A, Avenue de la Recherche Scientifique, Orleans, 45071
France
AU: Parks, G
EM: parks@ssl.berkeley.edu
AF: Space Sciences Lab, 7 Gauss Way, Berkeley, 94720-7450
United States
AB:
We present a study of ion acceleration and heating inside the plasma sheet boundary layers. Two components can generally be
detected there, high energy plasma sheet ions streaming earthward and ionospheric protons and oxygen ions flowing tailward.
Alfven waves with large and variable amplitude are found to control at times the perpendicular motion of these ions. Inside
the PSBL, both the ion parallel and perpendicular velocities increase. The temperature of the ions is also enhanced. Using
the four Cluster spacecraft, we test if centrifugal accelerations could be responsible for an exchange between perpendicular
and parallel energies and if the observed low frequency waves are able to locally heat efficiently the ionospheric ions.
DE: 2736 Magnetosphere/ionosphere interactions
DE: 2744 Magnetotail
DE: 2748 Magnetotail boundary layers
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting