Excitation of internal kink modes by trapped energetic beam ions

Technical Report · Sat Oct 01 00:00:00 EDT 1983

DOI:https://doi.org/10.2172/5719697· OSTI ID:5719697

Chen, L; White, R B; Rosenbluth, M N

Energetic trapped particles are shown to have a destabilizing effect on the internal kink mode in tokamaks. The plasma pressure threshold for the mode is lowered by the particles. The growth rate is near the ideal magnetohydrodynamic value, but the frequency is comparable to the trapped particle precission frequency. A model for the instability cycle gives stability properties, associated particle losses, and neutron emissivity consistent with the fishbone events observed in PDX.

• Research Organization: Princeton Univ., NJ (USA). Plasma Physics Lab.; Texas Univ., Austin (USA). Inst. for Fusion Studies
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5719697
• Report Number(s): PPPL-2044; ON: DE84002364
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
BEAMS
CLOSED PLASMA DEVICES
ENERGY-LEVEL TRANSITIONS
EXCITATION
INSTABILITY
INSTABILITY GROWTH RATES
ION BEAMS
KINK INSTABILITY
PDX DEVICES
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
SPECTRA
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRAPPED-PARTICLE INSTABILITY
X-RAY SPECTRA