Title :
Comment on "Investigation of scandate cathodes: emission, fabrication, and activation processes" by J.W. Gibson et al
Author_Institution :
Philips Res. Lab., Eindhoven, Netherlands
fDate :
6/1/1990 12:00:00 AM
Abstract :
Critical comments are made on the experimental results for zero field current density j/sub 0/ and work function obtained by J.W. Gibson et al. (ibid., vol.36, no.1, p.209-14, 1989) on top-layer scandate cathodes and on an emission model proposed for them. It is shown, for example, that the determination of j/sub 0/ gives rise to erroneous results.<>
Keywords :
scandium compounds; thermionic cathodes; thermionic emission; work function; Sc/sub 2/O/sub 3/ cathodes; activation processes; comments; emission model; erroneous results; experimental results; work function; zero field current density; Cathodes; Current-voltage characteristics; Diodes; Electrons; Extrapolation; Fabrication; Space charge; Temperature dependence;
Journal_Title :
Electron Devices, IEEE Transactions on
