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Related Experiment Video

Updated: May 24, 2026

Preparing a Celadonite Electron Source and Estimating Its Brightness

Preparing a Celadonite Electron Source and Estimating Its Brightness

Published on: November 5, 2019

Low-energy, high-current, ion source with cold electron emitter.

A V Vizir¹, M V Shandrikov, G Yu Yushkov

¹High Current Electronics Institute, Russian Academy of Sciences, Tomsk 634055, Russia. vizir@opee.hcei.tsc.ru

The Review of Scientific Instruments

|March 3, 2012

Summary

This summary is machine-generated.

This study presents a novel two-stage ion source using a cold electron emitter for efficient ion generation and acceleration. The gridless design and optimized emitter material ensure a long lifetime and stable ion flow.

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

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Area of Science:

Plasma Physics
Ion Source Technology
Materials Science

Background:

Conventional ion sources often face limitations in efficiency, lifetime, and beam quality.
Developing advanced ion sources is crucial for applications in materials processing, fusion energy, and space propulsion.

Purpose of the Study:

To introduce a novel two-stage discharge ion source with electron injection from a cold emitter.
To characterize the performance of the ion source, including ion flow and acceleration capabilities.
To evaluate the long-term operational stability and lifetime of the electron emitter.

Main Methods:

Utilized a two-stage discharge system with electron injection from a cold cathode.
Employed a gridless ion acceleration system leveraging electric fields within a magnetic plasma confinement.
Investigated hollow cathode arc discharge with hidden cathode spots for reduced erosion.
Selected appropriate emitter materials to optimize performance and longevity.

Main Results:

Achieved stable ion flow with energies below 20 eV and a current of 5 A dc.
Demonstrated efficient gas ionization and ion beam formation through injected electron acceleration.
The hollow cathode design with hidden spots resulted in a very low erosion rate.
The selected emitter materials contributed to a significantly long operational lifetime.

Conclusions:

The presented two-stage ion source offers a promising solution for generating high-quality ion beams.
The gridless acceleration and robust emitter design contribute to enhanced performance and durability.
This technology has potential applications in various scientific and industrial fields requiring efficient ion generation.