Počet záznamů: 1  

Experimental Investigation of Nonlinear Coupling of Lower Hybrid Waves on Tore Supra

  1. 1.
    0386382 - ÚFP 2013 RIV US eng J - Článek v odborném periodiku
    Goniche, M. - Frincu, B. - Ekedahl, A. - Petržílka, Václav - Berger-By, G. - Hillairet, J. - Litaudon, X. - Preynas, M. - Voyer, D.
    Experimental Investigation of Nonlinear Coupling of Lower Hybrid Waves on Tore Supra.
    Fusion Science and Technology. Roč. 62, č. 2 (2012), s. 322-332. ISSN 1536-1055. E-ISSN 1943-7641
    Grant CEP: GA ČR GA202/07/0044
    Výzkumný záměr: CEZ:AV0Z20430508
    Klíčová slova: LHwave * plasma * lower hybrid * wave coupling * nonlinear coupling
    Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
    Impakt faktor: 0.517, rok: 2012

    The coupling of lower hybrid waves from the two multijunction-type antennas installed on Tore Supra is investigated. At low power good agreement between the measurement of the power reflection coefficient and the computation with the ALOHA code is found for most cases. Details on electron density measurements, documented from embedded Langmuir probes, are discussed. At high power, departure from the linear theory is clearly seen in many cases. Ponderomotive forces depleting the electron density in a thin plasma layer in front of the antennas are likely to be responsible for the increase of power reflection coefficients measured at the input of the antennas. The decrease of the antenna directivity resulting from weaker wave coupling accounts for the experimental reduction of current drive efficiency
    Trvalý link: http://hdl.handle.net/11104/0217762

     
     
Počet záznamů: 1  

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