(a) Schematic diagram of the PSTNIS device, (b) schematic diagram of the electrostatic energy analyzer.
(a) Traditional Faraday cup, (b) semi-cylindrical Faraday cup with repeller guard ring.
(a) ESA plot using the traditional ESA at 10, 20, and 30 sccm flow rate, (b) ESA plot using the modified ESA at –150 V target potential and 10 sccm flow rate.
(a) Transverse ion current measurements using the modified ESA, (b) charge density distribution for negative Zr ions at –450 V target potential and 10 sccm flow rate.
Energy spreads at different target potentials.
Beam widths at different target potentials.
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