Charge exchange recombination spectroscopy on the JFT-2M tokamak

Journal Article · Mon Aug 01 00:00:00 EDT 1988 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1140178· OSTI ID:6950424

Ogawa, H; Miura, Y; Kasai, S

Charge exchange recombination spectroscopy (CXRS) was used to measure the ion temperature, the toroidal rotation velocity, and the time evolution of fully stripped carbon ions during neutral beam heating in JFT-2M. The ion temperature measured by the CXRS was in good agreement with that measured by the neutral particle analyzer. Fully stripped carbon ions were found to accumulate in the center of the plasma during the H-mode phase. These results are similar to those found for metallic impurity ions such as iron and titanium and suggest that accumulation of impurity ions during the H-mode phase is caused by the improved particle confinement.

• Research Organization: Department of Thermonuclear Fusion Research, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken 319-11, Japan
• OSTI ID: 6950424
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 59:8; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700100* -- Fusion Energy-- Plasma Research
BEAMS
CARBON IONS
CHARGED PARTICLES
CLOSED PLASMA DEVICES
ION BEAMS
ION TEMPERATURE
IONS
JFT-2M TOKAMAK
MEASURING INSTRUMENTS
OPTICAL SPECTROMETERS
PLASMA DENSITY
PLASMA DIAGNOSTICS
RECOMBINATION
SPECTROMETERS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES