Thorium oxide coating - HME AEI/Cambridge V-Loop Filaments (10/Box) – EMSIS ASIA – Electron ... Lanthanum hexaboride (LaB 6) and cerium hexaboride (CeB 6) cathodes are ideal for many small spot size applications such as SEM, … Miniature electron gun : Filament : LaB6 single crystal, Gold coated lenses with diameter < 20 100 eV, Beam current stability : < 2.0% for well degassed optics. thruster And More…. The LaB 6 filament is also a thermal filament. The LaB 6 filament is also a thermal filament. However, its work function is lower than for a tungsten filament, so it is more efficient. The FEG gun is not a thermal filament. Tungsten The emitter is located at the top of the SEM column in the Gun assembly. Field Emission Sources. Output in 315-380 nm supplements D2 output. Replacement filaments for Hitachi, JEOL and Zeiss electron microscopes. LaB6 FILAMENT FOR LEICA, CAMBRIDGE. 0004168565 361..396
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