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Title: Emittance of short-pulsed high-current ion beams formed from the plasma of the electron cyclotron resonance discharge sustained by high-power millimeter-wave gyrotron radiation

We present experimental results on measuring the emittance of short-pulsed (≤100 μs) high-current (80–100 mA) ion beams of heavy gases (Nitrogen, Argon) formed from a dense plasma of an ECR source of multiply charged ions (MCI) with quasi-gas-dynamic mode of plasma confinement in a magnetic trap of simple mirror configuration. The discharge was created by a high-power (90 kW) pulsed radiation of a 37.5-GHz gyrotron. The normalized emittance of generated ion beams of 100 mA current was (1.2–1.3) π mm mrad (70% of ions in the beams). Comparing these results with those obtained using a cusp magnetic trap, it was concluded that the structure of the trap magnetic field lines does not exert a decisive influence on the emittance of ion beams in the gas-dynamic ECR source of MCI.
Authors:
; ;  [1] ; ;  [1] ;  [2]
  1. Institute of Applied Physics of Russian Academy of Sciences, 46 Ulyanova st., 603950 Nizhny Novgorod (Russian Federation)
  2. (UNN), 23 Gagarina st., 603950 Nizhny Novgorod (Russian Federation)
Publication Date:
OSTI Identifier:
22253493
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Other Information: (c) 2014 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; ARGON; CURRENTS; CUSPED GEOMETRIES; ELECTRON CYCLOTRON-RESONANCE; ION BEAMS; MAGNETIC FIELDS; PLASMA; PLASMA CONFINEMENT; PULSES