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  • tokamak plasma  (2)
  • 1985-1989  (2)
  • 1
    Electronic Resource
    Electronic Resource
    HCN laser scattering on the JIPP T-IIU tokamak (1988)
    Springer
    International journal of infrared and millimeter waves 9 (1988), S. 655-665 
    Details
    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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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of density fluctuations on the JIPP T-IIU tokamak via an HCN laser scattering (1985)
    Springer
    International journal of infrared and millimeter waves 6 (1985), S. 729-739 
    Details
    ISSN: 1572-9559
    Keywords: HCN laser scattering ; density fluctuation ; tokamak plasma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Observation of density fluctuations in tokamak plasmas is important to study the plasma confinement and to perform high power heating of the plasma. We observed the density fluctuations by means of an HCN laser scattering method during rf heating in the ion-cyclotron range of frequency on a tokamak plasma. The density fluctuations at the drift wave frequency are not enhanced so much by the heating, but the frequency spectrum is shifted to higher frequency. The increase of the density fluctuation level during the heating has been observed only in low-frequency region owing to MHD activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01011949
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    Paper (German National Licenses)
    Fulltext
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