Plasma fluctuation measurements in ELMO bumpy torus

Technical Report · Thu Jan 01 04:00:00 EST 1981

DOI:https://doi.org/10.2172/6663308· OSTI ID:6663308

Komori, A.

Spatially resolved density fluctuation measurements in the dc frequency range up to 500 kHz have been conducted on the ELMO Bumpy Torus (EBT-I) plasma using photodetectors and Langmuir probes. Plasma currents produced by microwave-heated hot electron annuli were found to reduce fluctuations of toroidal plasma to low levels. The mechanism of stabilization has been studied in detail. Large amplitude fluctuations that accompany the hot electron annuli that destroy a stable plasma confinement were observed at low neutral pressure.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6663308
• Report Number(s): ORNL/TM-7530
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CONFINEMENT
CURRENTS
ELECTRIC CURRENTS
ELECTRIC PROBES
ELMO BUMPY TORUS
ELMO DEVICES
LANGMUIR PROBE
MAGNETIC MIRRORS
OPEN PLASMA DEVICES
PHOTODETECTORS
PLASMA CONFINEMENT
PLASMA DENSITY
PLASMA DIAGNOSTICS
PROBES
STABILIZATION
THERMONUCLEAR DEVICES