Open Access

Table 2.

Results from analytic estimate at each simulated radial distance.

32 RS 30 RS 27.87 RS 26 RS 24 RS 22 RS 20.36 RS 18 RS 15.977 RS 13.28 RS 11.44 RS 9.8 RS
Vm 2.93 2.38 5.13 2.55 3.26 6.18 6.89 5.97 7.12 7.43 6.09 8.32
Vs 1.63 1.57 2.83 2.5 1.8 2.31 2.42 1.55 0.58 0.5 0.27 0.99
x 4.6x 3.8x 7.2x 1.3x 7.3x 12.7x 15.1x 17x 22.3x 28.9x 31.7x 43x

Notes. Vm is the measured spacecraft floating potential values at each radial distance (from Figure 2a), Vs is the analytically estimated spacecraft floating potential values at each radial distance, and (x) is the scaling factor increase in secondary electron current needed to reach Vm.

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.