Published March 23, 2022 | Version v1

Loss of energetic ions comprising the ring current populations of Jupiter's middle and inner magnetosphere

Description

Provided here are ASCII dumps of the processed data that appears in the figures of the subject paper.  The enclosed files begin with a PDF of the paper that serves to identify, display, and document the figures in question.  Below is the paper abstract. 

Abstract: The low-altitude, polar orbit of the Juno mission allows the Jupiter Energetic Particle Detector Instrument (JEDI) to view into, and resolve, the loss cone of energetic ions comprising the low-altitude extension of Jupiter’s ring current ions.  For regions mapping from just inside Ganymede’s orbit, to well beyond Ganymede’s orbit, energetic ions (> 50 keV H+ and >130 keV Oxygen and Sulfur ions) are strongly scattered into the loss cone, and lost to the magnetosphere,  at the “strong diffusion limit” at essentially all times. We conclude, by arguing against magnetic curvature scattering, that the cause is waves, perhaps associated with Alfvénic variations previously documented in this equatorial region.  Scattering is generally weak or non-existent near the orbits of the moons Europa and Io, except for the regions just downstream of the co-rotating plasmas.  For Io, we sometimes observe moderate, but not saturated, scattering within roughly 60° downstream.  Significantly, scattering is weak or non-existent just upstream of Io’s position, an asymmetry echoed in some previous wave observations.  A preliminary accounting of the total (longitude-averaged) scattering losses near Io’s orbit yields loss rates of order 4% - 5% percent of the strong diffusion limit for H+, and 5%-7% for heavy ions (O+S).  We conclude that near Io’s orbit, charge exchange losses likely dominate over scattering losses for heavy ions, and for the lower energy H+ ions (roughly <200 keV).

Files

Mauk_2021_Jupiter_RC_Losses_22Mar22.pdf

Files (3.2 MB)

Name Size
md5:d54452f9e73f18c0a500c515bd6b5db7
3.1 MB Preview Download
md5:cf51fb18e66315180ceda142065b8609
14.0 kB Preview Download
md5:c7caf0969eafc4fae65c00bf2179b8c2
15.2 kB Preview Download
md5:a1aa6f05d58d997c22fd3f26ab831aa5
11.8 kB Preview Download
md5:44207866115cf8ac117646e35afc233e
485 Bytes Preview Download
md5:ab689bb22046e82768bda3b7bd384220
917 Bytes Preview Download
md5:38ee9fdb36b7789feeef992274309fe1
12.6 kB Preview Download
md5:b120f29427c71a69000ddec1ac78be2a
13.1 kB Preview Download
md5:432f30fbb74815f14719892c7c4e76ea
18.6 kB Preview Download
md5:4ff32c0f8a98fc9e2495124acf5ea87a
11.5 kB Preview Download
md5:98a93dc0fc5aa0d89ace690b2bbfbd15
12.4 kB Preview Download

Additional details

Related works

Cites
Journal article: 10.1029/2020JA027964 (DOI)
Journal article: 10.1002/2016GL072286 (DOI)
Journal article: 10.1029/2020JA027964 (DOI)
Journal article: 10.1029/2020JA028697 (DOI)
Journal article: 10.1029/2018JA025216 (DOI)