Abstract
The role of zonal flows in the formation of transport barrier in helical plasmas is analysed using the transport code. A set of one-dimensional transport equations is analysed, including the effect of zonal flows. The turbulent transport coefficient is shown to be suppressed when the plasma state takes the strong positive radial electric field. This bifurcation of the turbulent transport is newly caused by the change of the damping rate of zonal flows. It is theoretically demonstrated that the damping rate of zonal flows plays an important role in global confinement in toroidal plasmas.
| Original language | English |
|---|---|
| Article number | 024 |
| Pages (from-to) | 914-919 |
| Number of pages | 6 |
| Journal | Nuclear Fusion |
| Volume | 47 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 1 2007 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Condensed Matter Physics
Cite this
Transport analysis of the effect of zonal flows on electron internal transport barriers in toroidal helical plasmas. / Toda, S.; Itoh, K.; fujisawa, akihide; Itoh, Sanae; Yagi, M.; Fukuyama, A.; Diamond, P. H.; Ida, K.
In: Nuclear Fusion, Vol. 47, No. 8, 024, 01.08.2007, p. 914-919.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Transport analysis of the effect of zonal flows on electron internal transport barriers in toroidal helical plasmas
AU - Toda, S.
AU - Itoh, K.
AU - fujisawa, akihide
AU - Itoh, Sanae
AU - Yagi, M.
AU - Fukuyama, A.
AU - Diamond, P. H.
AU - Ida, K.
PY - 2007/8/1
Y1 - 2007/8/1
N2 - The role of zonal flows in the formation of transport barrier in helical plasmas is analysed using the transport code. A set of one-dimensional transport equations is analysed, including the effect of zonal flows. The turbulent transport coefficient is shown to be suppressed when the plasma state takes the strong positive radial electric field. This bifurcation of the turbulent transport is newly caused by the change of the damping rate of zonal flows. It is theoretically demonstrated that the damping rate of zonal flows plays an important role in global confinement in toroidal plasmas.
AB - The role of zonal flows in the formation of transport barrier in helical plasmas is analysed using the transport code. A set of one-dimensional transport equations is analysed, including the effect of zonal flows. The turbulent transport coefficient is shown to be suppressed when the plasma state takes the strong positive radial electric field. This bifurcation of the turbulent transport is newly caused by the change of the damping rate of zonal flows. It is theoretically demonstrated that the damping rate of zonal flows plays an important role in global confinement in toroidal plasmas.
UR - http://www.scopus.com/inward/record.url?scp=34547804403&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34547804403&partnerID=8YFLogxK
U2 - 10.1088/0029-5515/47/8/024
DO - 10.1088/0029-5515/47/8/024
M3 - Article
AN - SCOPUS:34547804403
VL - 47
SP - 914
EP - 919
JO - Nuclear Fusion
JF - Nuclear Fusion
SN - 0029-5515
IS - 8
M1 - 024
ER -