Construction and performance of practical field emitters from lanthanum hexaboride
- 1 January 1969
- journal article
- Published by Institution of Engineering and Technology (IET) in Proceedings of the Institution of Electrical Engineers
- Vol. 116 (3) , 348-350
- https://doi.org/10.1049/piee.1969.0063
Abstract
The use of field emitters in conventional vacuum devices has been retarded by the technological difficulties associated with the manufacture of reproducible points having a long life. In this paper the construction and performance of emitters from single crystals of lanthanum hexaboride are described and discussed. The results indicate that these emitters are capable of a significantly better performance than other known emitters, and can operate at current densities exceeding 105 A/cm2 for many hundred hours at residual-gas pressures of 10−9 torr.Keywords
This publication has 1 reference indexed in Scilit:
- Field EmissionPublished by Elsevier ,1956