Offers UHV electron guns and ion guns: beam energies 1V to 100 kV. Cathodes, cathode cartridges, filaments, Faraday cups, and phosphor screens. System options: energy sweeping, rastering, fast-pulsing, emission current stabilization, and LabView control. UHV components: multi-CF fittings, vacuum chambers, and eV Parts. Applications: surface physics, vacuum physics, space physics, charge neutralization, and more.