ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The Zeeman current-density profile diagnostic system installed on TEXT has observed the polarization shift of the π-line of the Zeeman split Li D lines due to the poloidal magnetic fields. The Li is injected into the plasma as a 95-keV neutral beam, and a cw dye laser is used to measure polarization shifts. The laser is tuned into resonance with the π-line and the polarization vector of the laser is rotated at 50-kHz using an electro-optic technique. The resulting 100-kHz laser-induced fluorescence signal is phase analyzed in order to observe the polarization shifts due to poloidal field. The Li beam intensity into the tokamak is approximately 1 mA and the dye laser intensity is 1 W at 3 GHz bandwidth. The diagnostic system and these early results will be discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1138225
