Slablike ion temperature gradient driven mode in reversed shear tokamaks

Details Slablike ion temperature gradient driven mode in reversed shear tokamaks Slablike ion temperature gradient driven mode in reversed shear tokamaks

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002njph....4..101i&link_type=abstract

New Journal of Physics, Volume 4, Issue 1, pp. 101 (2002).

Physics

3

Scientific paper

The ion temperature gradient driven (ITG) mode in reversed shear tokamaks is analysed using a gyrokinetic toroidal particle code. It is found that the ITG mode in the reversed shear configuration shows a coupled mode structure between the slab and toroidal ITG modes. Especially in the qmin-region, a slablike feature due to the reversed shear slab ITG mode (Idomura Y, Tokuda S and Wakatani M 1999 Phys. Plasmas 6 4658) becomes strong. This coupled eigenmode structure is changed from a slab mode to a toroidal mode depending on etai = Ln/Lti and Lti. Results show that in reversed shear tokamaks the ITG mode is determined from a competition between the slab and toroidal ITG modes.

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