Physical Electronics Dept.

You are invited to attend a lecture

By

Efim Oks, Tomsk Russia

High Current Electronics Institute - Russian Academy of Sciences

and

State University of Control Systems and Radioelectronics,

on the subject:

VACUUM ARC BASED ION AND ELECTRON SOURCES:

RESEARCH AND APPLICATION

The vacuum arc is an attractive way to generate dense metal plasma from which an ion beam can be extracted. The ion beam parameters (e.g. current density, ion charge and composition) are determined by the plasma parameters. Thus analysis of the beam and of ion emission provides information about the vacuum arc and cathode spot phenomena. In this seminar, resent results of vacuum arc investigation and some applications will be reviewed.

Content of the lecture:

1.       Introduction

2.       Vacuum arc phenomena with composite cathodes

3.       Angular distribution of ion current

4.       Generation of multiply charged metal ions by ECR plasma heating

5.       Increasing the surface conductivity of high voltage ceramic insulators by metallic ion beam treatment

6.       Generation of high current pulsed electron beams

7.       Conclusions