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Updated: Jul 16, 2026

Electrochemical Etching and Characterization of Sharp Field Emission Points for Electron Impact Ionization

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Published on: July 12, 2016

The field emission in the alternative electric fields.

E O Popov¹, A A Pashkevich

¹A.F. Ioffe Physico-Technical Institute of Russian Academy of Sciences, Polytechnitscheskaya str 26, St. Petersburg 194021, Russia. e.popov@mail.ioffe.ru

Ultramicroscopy

|March 27, 2007

Summary

This study shows that alternative power supplies enhance field emission by increasing current and stable electron emission from metal surfaces. These surfaces maintain performance after explosive pulses, indicating robust field emission characteristics.

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Area of Science:

Materials Science
Physics
Vacuum Electronics

Background:

Field emission is crucial for vacuum electronic devices.
Stable and high emission currents are essential for performance.
Alternative power supply regimes are being explored to improve field emission.

Purpose of the Study:

To investigate the effect of an alternative power supply on field emission from polished metal surfaces.
To assess the stability and durability of field emission characteristics under vacuum and explosive emission conditions.

Main Methods:

Utilized an alternative power supply for initially polished flat metal surfaces.
Operated in a vacuum environment ranging from 10(-4) to 10(-6) Torr.
Employed a grid as an electrode in the alternative power supply regime.

Main Results:

Observed growth of emitting points and a significant increase in emission current.
Demonstrated stable field emission current in vacuum.
Showcased good tolerance and maintainability of characteristics after explosive emission pulses.
Achieved an electron current of approximately 2 mA after the accelerating grid.

Conclusions:

Alternative power supplies effectively enhance field emission performance from metal surfaces.
The modified surfaces exhibit robust and stable field emission properties suitable for vacuum applications.
The use of a grid electrode in this regime facilitates significant electron current output.