Abstract
There is strong evidence in favor of zonal flow suppression in the Ion-Temperature-Gradient (ITG) mode turbulence, specifically close to the linear stability threshold. The present Letter attempts to analytically calculate the effects of zonal flow suppression of the ITG turbulence by deriving a modified dispersion relation including the back-reaction of the zonal flows on the ITG turbulence based on the quasilinear theory. The results are manifested in a reduction of the linear growth rate and an increase in the effective linear ITG threshold. Crown
| Original language | English |
|---|---|
| Pages (from-to) | 5987-5990 |
| Number of pages | 4 |
| Journal | Physics Letters, Section A: General, Atomic and Solid State Physics |
| Volume | 372 |
| Issue number | 38 |
| Early online date | 6 Aug 2008 |
| DOIs | |
| Publication status | Published - 15 Sept 2008 |
| Externally published | Yes |
Funding
This research was partly supported by the Grant-in-Aid from Japan Society for the Promotion of Science (Nos. 18340186 and 19560828) and Engineering and Physical Sciences Research Council (EPSRC) (No. EP/D064317/1).
ASJC Scopus subject areas
- General Physics and Astronomy