Author: Komppula, J.P.O.
Paper Title Page
MOOBMH01 Periodic Beam Burrent Oscillations Driven By Electron Cyclotron Instabilities In ECRIS Plasmas 5
 
  • O.A. Tarvainen, T. Kalvas, H. A. Koivisto, J.P.O. Komppula, R.J. Kronholm, J.P. Laulainen
    JYFL, Jyväskylä, Finland
  • I. Izotov, D. Mansfeld, V. Skalyga
    IAP/RAS, Nizhny Novgorod, Russia
  • V. Toivanen
    CERN, Geneva, Switzerland
 
  Experimental observation of cyclotron instabilities in electron cyclotron resonance ion source plasma operated in cw-mode is reported. The instabilities are associated with strong microwave emission and a burst of energetic electrons escaping the plasma, and explain the periodic oscillations of the extracted beam currents. The instabilities are shown to restrict the parameter space available for the optimization of high charge state ion currents.  
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