Image Details
Caption: Figure 5.
A block diagram of an SPAN-E instrument that has been simplified to its core measurement components. The bolded dashed lines in the center of the analyzer cross section reflect the symmetry in hemispheres and deflectors that correspond to the phi and theta instrument coordinates. VA represents the Analyzer bias, which determines the electron energy; VD1 and VD2 represent the two deflector biases. VS represents the spoiler voltage.
© 2020. The Author(s). Published by the American Astronomical Society.