The preparation of single crystal LaB6cathodes for electron microscopes
- 1 December 1975
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 8 (12), 1003-1004
- https://doi.org/10.1088/0022-3735/8/12/008
Abstract
Experimental techniques are presented for (i) a very simple zone melting technique employing a floating zone maintained by an arc which allows preparation of high purity single crystal cathodes, and (ii) a grinding device which allows the LaB6 tips to be ground to a radius of curvature of less than 3 mu m using a metallurgical polishing wheel.Keywords
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