publication . Report . Article . 1986

Tangential neutral-beam-driven instabilities in the Princeton beta experiment

Heidbrink, WW; Bol, K; Buchenauer, D; Fonck, R; Gammel, G; Ida, K; Kaita, R; Kaye, S; Kugel, H; LeBlanc, B; ...
Open Access
  • Published: 01 Jul 1986
  • Publisher: Office of Scientific and Technical Information (OSTI)
  • Country: Mexico
Abstract
During tangential neutral-beam injection into the PBX tokamak, bursts of two types of instabilities are observed. One instability occurs in the frequency range 120-210 kHz and the other oscillates predominantly near the frequency of bulk plasma rotation (20-30 kHz). Both instabilities correlate with drops in neutron emission and bursts in charge-exchange neutral flux, indicating that beam ions are removed from the center of the plasma by the instabilities. The central losses are comparable to the losses induced by the fishbone instability during perpendicular injection. © 1986 The American Physical Society.
Subjects
arXiv: Astrophysics::High Energy Astrophysical PhenomenaPhysics::Plasma Physics
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