Elsevier

Surface Science

Volume 61, Issue 2, 2 December 1976, Pages 535-549
Surface Science

Stabilization of field emission current

https://doi.org/10.1016/0039-6028(76)90065-0Get rights and content

Abstract

The frequency spectrum of tungsten field emission current instability when H2 and CO are adsorbed is measured. The power spectrum density slope W(f) versus f is found to be different for both cases. The slopes are about −1 and −1.5 for H2 and CO adsorption, respectively. The dependency of frequency spectra on the crystal planes is also measured. The amplitude of W(f) is found to be largest for (310) and lowest for (112).

References (2)

  • S. Usami

    J. Phys. Soc. Japan

    (1971)
    B.J. Hopkins et al.

    Nuovo Cimento

    (1967)
  • Ch. Kleint

    Surface Sci.

    (1971)
    Ch. Kleint

    Physica

    (1973)

Cited by (20)

  • A stable LaB<inf>6</inf> nanoneedle field-emission electron source for atomic resolution imaging with a transmission electron microscope

    2022, Materials Today
    Citation Excerpt :

    A curve fitting was carried out on Sn with respect to frequency (f) up to 0.1 Hz because the shot noise started to dominate the noise and it became independent of f in the range of frequencies greater than 0.1 Hz. Sn shows a dependence on f with the power of −0.42, which is greater than the usual value of −1 obtained for field-emission noise from W(310) emitter or carbon nanotubes and it is also slightly greater than the value of −0.53 of our previous results on the noise of LaB6 nanowire [23,38,39]. These data demonstrate further that the LaB6 nanoneedle has an excellent stability in emission current and the thermal flashing is only required no more than once every week.

View all citing articles on Scopus
View full text