Abstract
Neutral-beam injection is used to establish an energetic sloshing-ion distribution in the end cells of the Tandem Mirror Experiment-Upgrade (TMX-U). The angular and radial distributions of these ions are measured with arrays of secondary-emission detectors. Unfolding the angular distribution gives the axial extent of the sloshing ions. Sloshing-ion density measurements from the charge-exchange flux indicate a high-density (nis≂3 to 6×1012 cm−3) but narrow (FWHM ∼16 cm) sloshing-ion plasma.
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