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Title: Fast camera studies at an electron cyclotron resonance table plasma generator

A simple table-size ECR plasma generator operates in the ATOMKI without axial magnetic trap and without any particle extraction tool. Radial plasma confinement is ensured by a NdFeB hexapole. The table-top ECR is a simplified version of the 14 GHz ATOMKI-ECRIS. Plasma diagnostics experiments are planned to be performed at this device before installing the measurement setting at the “big” ECRIS. Recently, the plasma generator has been operated in pulsed RF mode in order to investigate the time evolution of the ECR plasma in two different ways. (1) The visible light radiation emitted by the plasma was investigated by the frames of a fast camera images with 1 ms temporal resolution. Since the visible light photographs are in strong correlation with the two-dimensional spatial distribution of the cold electron components of the plasma it can be important to understand better the transient processes just after the breakdown and just after the glow. (2) The time-resolved ion current on a specially shaped electrode was measured simultaneously in order to compare it with the visible light photographs. The response of the plasma was detected by changing some external setting parameters (gas pressure and microwave power) and was described in this paper.
Authors:
 [1] ;  [2] ;  [1] ; ;  [3]
  1. Institute for Nuclear Research (ATOMKI), H-4026 Debrecen, Bem tér 18/c (Hungary)
  2. (Hungary)
  3. Department of Experimental Physics, University of Debrecen, H-4032 Debrecen, Egyetem tér 1 (Hungary)
Publication Date:
OSTI Identifier:
22253248
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Conference: ICIS 2011: 14. international conference on ion sources, Giardini-Naxos, Sicily (Italy), 12-16 Sep 2011; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ATOMKI; CAMERAS; ECR ION SOURCES; ELECTRON CYCLOTRON-RESONANCE; EXTRACTION; GHZ RANGE 01-100; HEXAPOLES; IMAGES; MICROWAVE RADIATION; PHOTOGRAPHY; PLASMA CONFINEMENT; PLASMA DIAGNOSTICS; SPATIAL DISTRIBUTION; TIME RESOLUTION