ISSN:
1572-9559
Keywords:
HCN laser scattering
;
density fluctuation
;
tokamak plasma
;
ICRF heating
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A 4-channel HCN laser scattering system has been developed and applied to the JIPP T-IIU tokamak. Main aim of this system is to study microturbulence excited in the plasma, especially in the high power ICRF heating experiment. The observed density fluctuations are in a frequency range of the electron diamagnetic drift wave and have broad frequency spectra. The main part of the wavenumber is found to satisfy the condition of $$k_ \bot \rho _i \lesssim 1$$ . In the heating experiments, deterioration of the energy confinement time is observed, and the density fluctuation level increases with the increase of the heating power.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01013418
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