La–Mo emitters in hollow cathodes
- 1 November 1980
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 51 (11), 1468-1470
- https://doi.org/10.1063/1.1136126
Abstract
A hollow cathode which utilizes lanthanum molybdenum (LM) as the active electron emitter is described and compared in performance to a LaB6 emitter of equal area in an identical configuration. Tests in both argon and hydrogen produced effective emission current densities of up to 10 A/cm2 from the LM material in continuous and long pulse operation. Examination after 40 h running time showed no sign of damage or rapid evaporation. Impurity build up on the emitting surfaces which stopped the LaB6 emission after 50 h was not apparent with the LM and long lifetimes are anticipated for cathodes using this emitter.Keywords
This publication has 5 references indexed in Scilit:
- IBIS: A hollow-cathode multipole boundary ion sourceApplied Physics Letters, 1978
- Lanthanum hexaboride hollow cathode for dense plasma productionReview of Scientific Instruments, 1978
- Low-frequency flute instabilities of a hollow cathode arc discharge: Theory and experimentPhysics of Fluids, 1973
- Functional Ion Laser Based upon a Thermionic Hollow Cathode DischargeReview of Scientific Instruments, 1968
- Highly Ionized Hollow Cathode DischargeJournal of Applied Physics, 1962