F.J. Himpsel, T.A. Jung, et al.
Surface Review and Letters
Paper
Some experimental and estimated characteristics of the lanthanum hexaboride rod cathode electron gun
Abstract
Measured lifetimes, heating powers and brightnesses are presented for the lanthanum hexaboride rod cathode electron gun together with estimated lifetimes for several operating brightnesses. A detailed description of the cathode structure is given and the effects of poor vacua on the cathode performance are discussed.