[Table of Contents]

Plasma and Fusion Research

Volume 2, S1079 (2007)

Regular Articles

Observation of Molecular and Atomic Ions in Recombination Plasma
A. TONEGAWA, H. MASUMOTO, T. NISHIJIMA, M. ONO and K. KAWAMURA
Department of Physics, School of Science, Tokai University
(Received 5 December 2006 / Accepted 28 May 2007 / Published 20 November 2007)

Abstract

Measurements of the densities of the molecular and atomic ions (nH+, nH2+, nH3+) were carried out in hydrogen recombination plasma in the linear divertor plasma simulator, TPD-SheetIV. The molecular and atomic ion currents were detected using an omegatron mass analyzer. The ground-state vibrational temperature of hydrogen molecules Tvib is obtained by measurement with VUV emission spectroscopy. Taking into account of Tvib, a zero-dimensional model using the relevant rate balance equations was found to predict the observed dominant ion.

Keywords

atomic and molecular process, recombination, omegatron mass analyzer, vibrational temperature, TPD-SheetIV

DOI: 10.1585/pfr.2.S1079

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This paper may be cited as follows:

A. TONEGAWA, H. MASUMOTO, T. NISHIJIMA, M. ONO and K. KAWAMURA, Plasma Fusion Res. 2, S1079 (2007).