By Topic

Beam‐plasma discharge in a Kyoto beam‐plasma‐ion source

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Ishikawa, J. ; Department of Electronics, Kyoto University, Kyoto 606, Japan ; Takagi, Toshinori

Your organization might have access to this article on the publisher's site. To check, click on this link: 

A beam‐plasma type ion source employing an original operating principle has been developed by the present authors. The ion source consists of an ion extraction region with an electron gun, a thin long drift tube as the plasma production chamber, and a primary electron beam collector. An electron beam is effectively utilized for the dual purpose of high density plasma production as a result of beam‐plasma discharge, and high current ion beam extraction with ion space‐charge compensation. A high density plasma of the order of 1011–1013 cm-3 was produced by virtue of the beam‐plasma discharge which was caused by the interaction between a space‐charge wave on the electron beam and a high frequency plasma wave. The plasma density then produced was 102–103 times the density produced only by collisional ionization by the electron beam. In order to obtain a stable beam‐plasma discharge, a secondary electron beam emitted from the electron collector should be utilized. The mechanism of the beam‐plasma discharge was analyzed by use of a linear theory in the case of the small thermal energy of the electron beam, and by use of a quasilinear theory in the case of the large thermal energy. High current ion beams of more than 0.1 A were extracted even at a low extraction voltage of 1–5 kV.

Published in:

Journal of Applied Physics  (Volume:54 ,  Issue: 6 )