Fig. 4

Two-dimensional histogram of He+
PUI counts in the crescent range of ecliptic longitude (230° ≤ λ ≤ 280°)
depending on Vr
and .
Only IMF configurations where the torus VDF of freshly injected PUIs is measured by PLASTIC’s aperture are considered
by selecting − 15° ≤ ΘGC ≤ 15°
and − 15° ≤ ΦGC ≤ 15°.
The counts per bin are normalized to the maximum of each
bin. The nominal cutoff in this range of ecliptic longitude is indicated by the vertical black dashed line. Above
(white dashed line) the cutoff smears out to higher speeds, which indicates that acceleration processes must have acted on
the He+
VDF.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.