[Table of Contents]

Plasma and Fusion Research

Volume 6, 1201153 (2011)

Rapid Communications

Charge Exchange Momentum Transfer due to Ion Beam Injection in Partially Ionized Plasmas
Atsushi OKAMOTO, Hiroyuki TAKAHASHI, Sumio KITAJIMA and Mamiko SASAO
Department of Quantum Science and Energy Engineering, Tohoku University, Sendai, Miyagi 980-8579, Japan
(Received 7 November 2011 / Accepted 16 November 2011 / Published 28 December 2011)

Abstract

Time responses of a helium plasma to helium gas puffing without and with helium beam injection in a linear plasma device are experimentally investigated. Increase in the neutral density due to gas puffing is suppressed by ion beam injection. The experimental results show that a momentum transport from the ion beam to the puffed neutral particles occurs due to the charge exchange interaction, suggesting that charge exchange momentum transport is one of the processes responsible for the spatial redistribution of neutral atoms in partially ionized plasmas.

Keywords

charge exchange interaction, momentum transfer, gas puff, ion beam, partially ionized plasma

DOI: 10.1585/pfr.6.1201153

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This paper may be cited as follows:

Atsushi OKAMOTO, Hiroyuki TAKAHASHI, Sumio KITAJIMA and Mamiko SASAO, Plasma Fusion Res. 6, 1201153 (2011).