[Table of Contents]

Plasma and Fusion Research

Volume 6, 1201009 (2011)

Rapid Communications

Ion Acceleration Independent of the Electric Current Direction in Z-Pinch Plasma
Mineyuki NISHIO, Hiroshi SAKUMA and Keiichi TAKASUGI1)
Graduate School of Science and Technology, Nihon University, Tokyo 101-8308, Japan
1)
Institute of Quantum Science, Nihon University, Tokyo 101-8308, Japan
(Received 8 October 2010 / Accepted 11 December 2010 / Published 28 February 2011)

Abstract

Ions accelerated in z-pinch experiments with either positive or negative discharge were measured by using a Thomson Parabola analyzer in order to understand the directional tendencies of the ion acceleration. Ions having energy on the order of MeV were observed in both positive and negative discharges. The velocity and energy of each ion species were measured to be considerably similar in magnitude, in spite of the difference in the polarity of the power supplies. The highest-velocity ions with different charges in each measurement lay on the constant velocity line. The model independent of the current direction should be considered as the main mechanism of ion acceleration in this study.

Keywords

z pinch, ion acceleration, Thomson Parabola analyzer, positive and negative power supplies

DOI: 10.1585/pfr.6.1201009

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This paper may be cited as follows:

Mineyuki NISHIO, Hiroshi SAKUMA and Keiichi TAKASUGI, Plasma Fusion Res. 6, 1201009 (2011).