JEOL K base LaB6 Cathode Source

Description: Kimball ES423E-90/15 standard LaB6 tip with 90° cone and 15µm microflatJEOL K base Diameter of Ceramic Disc: 28.0 mm Diameter of Pins: 1.2 mm Center Distance of Pins: 8.0 mm TheKimball Physics ES-423E (Extended Life) Lanthanum Hexaboride Cathode is a highperformance, resistively heated, thermionic electron source. It is currently used in many electron opticalsystems: Transmission Electron Microsscopes (TEM's), Scanning ElectronMicroscopes (SEM's), microprobes, electron lithography systems, etc. This superior LaB6 source gives a greater brightness (highercurrent density), lower energy spread (better resolution) and a longer lifetimethan standard tungsten filaments. Lifetimesin excess of 6 months of continuous operation are regularly achieved incommercial SEM's and TEM's with suitable gun vacuum (10-7 torr or better). The standard emitter is a 15µm diameter<100> oriented single crystal surface mounted on the end of a singlepiece, stress-free, carbon heater rod, held in place by a carbon ferrule. The single piece carbon heater rod has aprecision machined 100µm slot along the axis to direct the heating current; theresult is no high temperature carrying high temperature joints. The design together with a high degree ofsymmetry keeps mechanical movements small which results in increasedstability. The small physical size fitsmost Wehnelt cylinders with ease. Another advantage of the Kimball Physics LaB6 cathode is the reduced material loss whichmeans less Wehnelt contamination; again this results in greater stabilitycompared to other types of LaB6 cathodes. Further information:This cathode source willonly be shipped to domestic (continental USA and not to: Alaska Hawaii, USProtectorates, APO/FPO, PO Boxes, and international) addresses. No returns accepted. Please look at the pictures to judgecondition and ask any questions or concerns.

Price: 825 USD

Location: Fenton, Missouri

End Time: 2024-08-19T16:29:13.000Z

Shipping Cost: 0 USD