Abstract
The collisional effects on nonlinear coherent structures of zonal flows in a toroidal plasma are investigated. They weaken the flows and enhance turbulent transport. Expressions for the zonal flow velocity, scale length and the turbulent transport coefficients are obtained. In the limit of small collisional flow damping, the turbulent transport coefficient remains finite. A phase diagram is obtained, which shows the parameter domain where the zonal flow has finite amplitude.
| Original language | English |
|---|---|
| Pages (from-to) | A335-A340 |
| Journal | Plasma Physics and Controlled Fusion |
| Volume | 46 |
| Issue number | 5 SUPPL. A |
| DOIs | |
| Publication status | Published - May 2004 |
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All Science Journal Classification (ASJC) codes
- Nuclear Energy and Engineering
- Condensed Matter Physics
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Collisional effects on coherent structures of zonal flows and turbulent transport. / Itoh, K.; Hallatschek, K.; Toda, S.; Itoh, S. I.; Diamond, P. H.; Yagi, M.; Sanuki, H.
In: Plasma Physics and Controlled Fusion, Vol. 46, No. 5 SUPPL. A, 05.2004, p. A335-A340.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Collisional effects on coherent structures of zonal flows and turbulent transport
AU - Itoh, K.
AU - Hallatschek, K.
AU - Toda, S.
AU - Itoh, S. I.
AU - Diamond, P. H.
AU - Yagi, M.
AU - Sanuki, H.
PY - 2004/5
Y1 - 2004/5
N2 - The collisional effects on nonlinear coherent structures of zonal flows in a toroidal plasma are investigated. They weaken the flows and enhance turbulent transport. Expressions for the zonal flow velocity, scale length and the turbulent transport coefficients are obtained. In the limit of small collisional flow damping, the turbulent transport coefficient remains finite. A phase diagram is obtained, which shows the parameter domain where the zonal flow has finite amplitude.
AB - The collisional effects on nonlinear coherent structures of zonal flows in a toroidal plasma are investigated. They weaken the flows and enhance turbulent transport. Expressions for the zonal flow velocity, scale length and the turbulent transport coefficients are obtained. In the limit of small collisional flow damping, the turbulent transport coefficient remains finite. A phase diagram is obtained, which shows the parameter domain where the zonal flow has finite amplitude.
UR - http://www.scopus.com/inward/record.url?scp=2942560968&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=2942560968&partnerID=8YFLogxK
U2 - 10.1088/0741-3335/46/5A/037
DO - 10.1088/0741-3335/46/5A/037
M3 - Article
AN - SCOPUS:2942560968
VL - 46
SP - A335-A340
JO - Plasma Physics and Controlled Fusion
JF - Plasma Physics and Controlled Fusion
SN - 0741-3335
IS - 5 SUPPL. A
ER -