Plasma and Fusion Research

Volume 14, 1201039 (2019)

Rapid Communications

Controlling the Diameter of a Pure Electron Plasma to Produce an Exact Two-Fluid Plasma State in a Nested Trap
Toshiki KATO, Haruhiko HIMURA, Shinji SOWA and Akio SANPEI
Department of Electronics, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan
(Received 20 December 2018 / Accepted 15 January 2019 / Published 25 February 2019)

Abstract

Methods for controlling accurately the diameter de of a pure electron plasma in a nested trap of the BX-U machine are described. By controlling the acceleration voltages and the number of electron guns activated, we can successfully change de over the range between 0.28 and 2.27 cm. Therefore, de can be made almost exactly the same as the diameter of a lithium ion plasma enabling the investigation of a two-fluid plasma state by using non-neutral plasmas.

Keywords

two-fluid plasma, non-neutral plasma, nested trap

DOI: 10.1585/pfr.14.1201039

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