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Title: Kinetic instabilities in pulsed operation mode of a 14 GHz electron cyclotron resonance ion source

The occurrence of kinetic plasma instabilities is studied in pulsed operation mode of a 14 GHz A-electron cyclotron resonance type electron cyclotron resonance ion source. It is shown that the temporal delay between the plasma breakdown and the appearance of the instabilities is on the order of 10-100 ms. The most important parameters affecting the delay are magnetic field strength and neutral gas pressure. It is demonstrated that kinetic instabilities limit the high charge state ion beam production in the unstable operating regime.
Authors:
; ; ; ; ;  [1] ; ;  [2] ;  [2] ;  [3]
  1. Department of Physics, University of Jyväskylä, 40500 Jyväskylä (Finland)
  2. Institute of Applied Physics, RAS, 46 Ul‘yanova St., 603950 Nizhny Novgorod (Russian Federation)
  3. (UNN), 23 Gagarina St., 603950 Nizhny Novgorod (Russian Federation)
Publication Date:
OSTI Identifier:
22482863
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BREAKDOWN; CHARGE STATES; ECR ION SOURCES; ELECTRON CYCLOTRON-RESONANCE; GHZ RANGE 01-100; ION BEAMS; MAGNETIC FIELDS; OPERATION; PLASMA; PLASMA INSTABILITY; PULSES