The application of an energy-selective imaging technique to a study of field-induced hot electrons from broad-area high-voltage electrodes

A new instrumental technique has been developed for providing an energy-selective display of the field-induced hot-electron emission images obtained from localized “sites” on broad-area vacuum-insulated high-voltage electrodes. This technique has combined the field emission imaging and energy-tuning...

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Bibliographic Details
Published inSurface science Vol. 274; no. 1; pp. 147 - 160
Main Authors Xu, N.S., Latham, R.V.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 15.07.1992
Amsterdam Elsevier Science
New York, NY
Subjects
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron and ion emission by liquids and solids; impact phenomena
Exact sciences and technology
Field emission, ionization, evaporation, and desorption
Metals. Metallurgy
Physics
Hot electron
Field emission
Electron emission
Investigation method
Imaging
Surface
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Summary:A new instrumental technique has been developed for providing an energy-selective display of the field-induced hot-electron emission images obtained from localized “sites” on broad-area vacuum-insulated high-voltage electrodes. This technique has combined the field emission imaging and energy-tuning capabilities of a high-resolution electron spectrometer to produce a spatial display of energy-selected electrons emitted from a given site. The experimental findings have shown that there exist two types of emission process, characterized, respectively, by two types of emission image. A detailed consideration is given to the physical nature of the emission mechanisms which promote these two types of images.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(92)90109-J