Shah, "Drift wave
instability in a nonuniform quantum dusty magnetoplasma," Physics of Plasmas, vol.
Two workshops on "A half Century of Drift Wave
and Beyond" and "Alternate Energy Technologies" will also be held after the ISS-2013 on Saturday, March 16.
This project's aim is to follow up on a number of recent developments in our understanding of these phenomena and investigate: the implications of the nonlinear suppression of energy flows into phase space 1,2 for transport models; the delicate balance between a chaotic field of plasma excitations ("drift waves
") and self-generated regular "zonal" flows 3 that maintains the nonlinear state of a plasma near the critical threshold separating the turbulent and quiescent phases; the emergence of persistent coherent structures at this so-called "edge of chaos" 4 and how all this fits together and conspires to set limits on the background gradients.
The topics include linear wave dynamics, natural occurrences of plasmas, electrostatic waves in warm homogeneous and isotropic plasmas, weakly nonlinear electrostatic drift waves
, and kinetic plasma sound waves.
Developer of a well-known nonlinear model for drift waves
(Hasegawa-Wakatani equation), Prof Wakatani was Co-Leader of the ITER Expert Group on Transport, and one of the editors of ITER Physics Basis (published as a special edition of Nuclear Fusion).
Examples include his insights on magnetic island healing, curvature effects on island evolution, and convective instability of drift waves
. He is perhaps best known for two innovations.