Title :
Generation and instability of spiral wakes in sheared electron flows
Author :
Kabantsev, Andrey A. ; Driscoll, C. Fred
Author_Institution :
Dept. of Phys., California Univ., San Diego, La Jolla, CA, USA
fDate :
2/1/2002 12:00:00 AM
Abstract :
Images of the electron density of a magnetized electron column illustrate the dynamics of intense vortices moving in a weaker background vorticity. A moving retrograde clump of vorticity generates a spiral wake that then evolves into many long-lived holes, contributing to the late time fluctuations
Keywords :
plasma density; plasma flow; plasma instability; vortices; wakes; background vorticity; electron density; intense vortices; late time fluctuations; long-lived holes; magnetized electron column; retrograde clump; rotational shear; sheared electron flows; spiral wake; turbulent rotational flows; two-dimensional vortex dynamics; vorticity; Boundary conditions; Electron traps; Fluctuations; Magnetic confinement; Plasma confinement; Plasma density; Plasma diagnostics; Plasma measurements; Spirals; Viscosity;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2002.1003904
