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15th International Workshop on ECR Ion Sources, ECRIS'02, Jyvaskyla : Finlande (2002)
Progress report of investigations on gyrotron ECR ion source SMIS 37
S.V. Golubev, D.A. Mansfeld, S.V. Razin, V.A. Skalyga, A.V. Vodopyanov, V.G. Zorin, R. Geller1, T. Lamy1, P. Sortais1, T. Thuillier1

A review of experimental investigations on ion production in plasma developed on SMIS 37 source at the Institute of Applied Physics of RAS (Nizhny Novgorod) is reported. Pulsed power gyrotron with emission frequency 37.5 GHz was used for plasma creation and heating in the simple magnetic mirror trap. Magnetic field with value up to 3.5 T was created by pulsed coils. Experiments were carried out in nitrogen as operating gas. Formation of multicharged ions in dense plasma in different regimes of plasma confinement was investigated. In this report we describe some investigations of instabilities of the plasma in the trap. Low frequency instabilities are analyzed basing on the results of plasma high-speed image registration. Also, whistler cyclotron instability was observed. Short pulses of accelerated electrons with energy about 10 keV are measured. Detected short pulses of microwave emission of the plasma characterize cyclotron instability too. Dense plasma of singly charged ions obtained in the trap with the plug magnetic field much less than resonant value. Flux of the plasma exceeds 0,1 A/cm2, electron temperature is about 20 eV. Such plasma seems to be interesting for surface modification.
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
Physique/Physique/Instrumentations et Détecteurs
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