Abstract
| Language | English |
|---|---|
| Pages | 165002-1 |
| Number of pages | 165001 |
| Journal | Physical Review Letters |
| Volume | 94 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - Apr 2005 |
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Keywords
- drift waves
- zonal flows
- wave kinetics
- plasmas
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Quasiparticle approach to the modulational instability of drift waves coupling to zonal flows. / Trines, R.; Bingham, R.; Silva, L.O.; Mendonça, J.T.; Shukla, P.K.; Mori, W.B.
In: Physical Review Letters, Vol. 94, No. 16, 04.2005, p. 165002-1.Research output: Contribution to journal › Article
TY - JOUR
T1 - Quasiparticle approach to the modulational instability of drift waves coupling to zonal flows
AU - Trines, R.
AU - Bingham, R.
AU - Silva, L.O.
AU - Mendonça, J.T.
AU - Shukla, P.K.
AU - Mori, W.B.
PY - 2005/4
Y1 - 2005/4
N2 - The interaction between broadband drift mode turbulence and zonal flows has been studied through the wave-kinetic approach. Simulations have been conducted in which a particle-in-cell representation is used for the quasiparticles, while a fluid model is employed for the plasma. The interactions have been studied in a plasma edge configuration which has applications in both tokamak physics and magnetopause boundary layer studies. Simulation results show the development of a zonal flow through the modulational instability of the drift wave distribution, as well as the existence of solitary zonal flow structures about an ion gyroradius wide, drifting towards steeper relative density gradients.
AB - The interaction between broadband drift mode turbulence and zonal flows has been studied through the wave-kinetic approach. Simulations have been conducted in which a particle-in-cell representation is used for the quasiparticles, while a fluid model is employed for the plasma. The interactions have been studied in a plasma edge configuration which has applications in both tokamak physics and magnetopause boundary layer studies. Simulation results show the development of a zonal flow through the modulational instability of the drift wave distribution, as well as the existence of solitary zonal flow structures about an ion gyroradius wide, drifting towards steeper relative density gradients.
KW - drift waves
KW - zonal flows
KW - wave kinetics
KW - plasmas
UR - http://dx.doi.org/10.1103/PhysRevLett.94.165002
U2 - 10.1103/PhysRevLett.94.165002
DO - 10.1103/PhysRevLett.94.165002
M3 - Article
VL - 94
SP - 165002
EP - 165001
JO - Physical Review Letters
T2 - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 16
ER -