Measurements and implications of Zeff profiles on the DIII‐D tokamak
作者： D. P. Schissel , R. E. Stockdale , H. St. John , W. M. Tang
DOI: 10.1063/1.866892
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摘要: Here Zeff profiles have been obtained across the entire minor radius of DIII‐D [Fusion Technol. 8, 441 (1985); Plasma Physics and Controlled Nuclear Fusion Research, 1986 (IAEA, Vienna, 1987), Vol. 1, p. 159] tokamak from measurements visible bremsstrahlung continuum radiation. The are presented for Ohmic divertor limiter plasmas as well neutral beam heated H‐mode L‐mode plasmas. measured found to small gradients over plasma cross section. This implies that resistivity gradient driven electrostatic modes unlikely influence confinement properties in edge region these discharges. has a centrally peaked profile relatively flat electron density suggests existence negative value parameter ηi.
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