ausblenden:
Schlagwörter:
Field emission, LaB6, Tip build up, FIB
Zusammenfassung:
We present our work on the development and characterization of a practical and robust LaB6 based cold field emitter electron source. To this end we prepared a Tantalum mounted single crystal LaB6 rod that was chemically etched, yielding an apex size of 2μm. The obtained tip is loaded into a ultra high vacuum chamber for pulsed emission in the μs regime, using extraction voltage pulsing. Further processing using focused ion beam (FIB) milling, and conditioning using a build-up technique will be used to reduce the apex size to the nm range.
