H/sub. cap alpha. / laser fluorescence diagnostic on the Tara Tandem Mirror experiment

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

DOI:https://doi.org/10.1063/1.1139691· OSTI ID:7123675

Guss, W C; Yao, X Z; Pocs, L; Mahon, R; Casey, J; Post, R S

A laser fluorescence diagnostic has been used for measuring the neutral hydrogen density in the central cell of the Tara thermal barrier tandem mirror. Experiments have been performed using laser-induced, resonance fluorescence detection of H/sub ..cap alpha../ (6563-A) radiation. Measurements were made at a number of radial positions with 1-cm resolution, from the magnetic axis to near the plasma limiter. Stray laser light contributions to the signal were eliminated with a double-pulse technique. For comparison, the chord-averaged plasma H/sub ..cap alpha../ radiation was analyzed under the identical conditions for which laser fluorescence data were taken.

• Research Organization: Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 7123675
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 59:8
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA DIAGNOSTICS
OPTICAL SPECTROMETERS
TARA DEVICES
BALMER LINES
BEAM-PLASMA SYSTEMS
ELECTRON TEMPERATURE
FLUORESCENCE SPECTROSCOPY
RESONANCE FLUORESCENCE
SPATIAL RESOLUTION
EMISSION SPECTROSCOPY
FLUORESCENCE
LUMINESCENCE
MAGNETIC MIRRORS
MEASURING INSTRUMENTS
OPEN PLASMA DEVICES
RESOLUTION
SPECTROMETERS
SPECTROSCOPY
TANDEM MIRRORS
THERMONUCLEAR DEVICES
700102* - Fusion Energy- Plasma Research- Diagnostics