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

Journal Article · Mon Feb 15 04:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4931711· OSTI ID:22482863

Kalvas, T.; Koivisto, H.; Komppula, J.; Kronholm, R.; Laulainen, J. ^[1]; Izotov, I.; Mansfeld, D. ^[2]; Skalyga, V. ^[2]

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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)

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.

• OSTI ID: 22482863
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 2 Vol. 87; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

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