Study of pulsed electron cyclotron resonance ion source plasma near breakdown: The preglow

Journal Article · Fri Feb 15 00:00:00 EST 2008 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2821503· OSTI ID:21103899

Thuillier, T; Lamy, T; Latrasse, L; Izotov, I V; Sidorov, A V; Skalyga, V A; Zorin, V G; Marie-Jeanne, M ^[1]

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1. Laboratoire de Physique Subatomique et de Cosmologie, Universite Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, Grenoble 38026 (France)

A careful study of pulsed mode operation of the PHOENIX electron cyclotron resonance (ECR) ion source has clearly demonstrated the reality of an unexpected transient current peak, occurring at the very beginning of the plasma breakdown. This regime was named the preglow, as an explicit reference to the afterglow occurring at the microwave pulse end. After the transient preglow peak, the plasma regime relaxes to the classical steady state one. Argon preglow experiments performed at LPSC are presented. A theoretical model of ECR gas breakdown in a magnetic trap, developed at IAP, showing satisfactory agreement with the experimental results is suggested.

• OSTI ID: 21103899
• Journal Information: Review of Scientific Instruments, Vol. 79, Issue 2; Conference: ICIS 2007: 12. international conference on ion sources, Jeju (Korea, Republic of), 26-31 Aug 2007; Other Information: DOI: 10.1063/1.2821503; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AFTERGLOW
ARGON
BREAKDOWN
ECR ION SOURCES
ELECTRON CYCLOTRON-RESONANCE
MICROWAVE RADIATION
PEAKS
PLASMA
STEADY-STATE CONDITIONS
TRANSIENTS