Ion temperature gradient mode in the weak density gradient limit
作者： R. R. Dominguez , R. E. Waltz
DOI: 10.1063/1.867024
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摘要: The toroidal ion temperature gradient mode (ITG mode) is analyzed in the fluid limit for flat density profiles, typical of many H‐mode plasmas. It shown that stability boundary not Ln/LTi=const ≊O(1 ■2) (Ln and LTi are scale lengths, respectively), as typically quoted. Rather, large Ln/R threshold characterized by LTi/R =const≊O(0.1) with R major radius. This result could substantially reduce impact ITG‐mode turbulence, allowing a reconciliation present drift wave transport models improved energy confinement.
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