HR: 1340h
AN: SM53A-1078    [Abstracts]
TI: Ion abundance ratios in the Jovian magnetotail
AU: * Haggerty, D K
EM: dennis.haggerty@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, md 20723, United States
AU: Hill, M E
EM: Matthew.Hill@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, md 20723, United States
AU: McNutt, R L
EM: Ralph.McNutt@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, md 20723, United States
AB: The New Horizons mission offered an exceptional opportunity to explore the distant Jovian magnetotail to over 2600 Jovian Radii. The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) is a multi- directional time-of flight spectrometer measuring ions from ~15 keV to over 1 MeV, and electrons from 25 keV through ~0.5 MeV. Included in the measurements made by PEPSSI are proton, helium, oxygen, and sulfur observations. The ion abundance ratios offer distinct information on the sources and sinks in the Jovian system. Previous observations of ion abundances are available only out to ~ 150 Jovian Radii. During the 100+ day exploration of the magnetotail, PEPSSI encountered numerous spatial structures containing a high energetic particle number density. We examine the composition of these dynamic structures and compare the ion abundances with those found in more quiescent regions. We report on the composition ratios as a function of distance down the Jovian magnetotail.
DE: 2744 Magnetotail
DE: 2748 Magnetotail boundary layers
DE: 2794 Instruments and techniques
DE: 6220 Jupiter
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting