Experimental observation of self excited co-rotating multiple vortices in a dusty plasma with inhomogeneous plasma background
نویسندگان
چکیده
منابع مشابه
Laser-excited mach cones in a dusty plasma crystal
Experimental studies of the formation and structure of Mach cones in a plasma crystal are presented. Plasma crystals are ordered structures of charged microspheres trapped in the sheath of an rf discharge plasma. Using a monolayer crystal with a hexagonal lattice, Mach cones were excited by the radiation pressure of a focused laser beam. The beam was swept at a supersonic speed through the crys...
متن کاملExperimental study of shock formation in a dusty plasma
If a large amplitude density pulse is launched into a plasma having equal electron and ion temperatures, Te 5Ti , Landau damping prevents the formation of a sharp leading edge ~‘‘shock’’! and the pulse spreads out. If the Landau damping is eliminated, the pulse steepens as it propagates and a shock structure is formed. This has been observed experimentally, for example, by increasing the Te /Ti...
متن کاملMerging and splitting of plasma spheroids in a dusty plasma.
Dust particle growth in a plasma is a strongly disturbing phenomenon for the plasma equilibrium. It can induce many different types of low-frequency instabilities that can be experimentally observed, especially using high-speed imaging. A spectacular case has been observed in a krypton plasma where a huge density of dust particles is grown by material sputtering. The instability consists of wel...
متن کاملDusty Plasma Experimental (DPEx) device for complex plasma experiments with flow.
A versatile table-top dusty plasma experimental device to study flow induced excitations of linear and nonlinear waves/structures in a complex plasma is presented. In this Π-shaped apparatus, a DC glow discharge plasma is produced between a disc shaped anode and a grounded long cathode tray by applying a high voltage DC in the background of a neutral gas (argon) and subsequently a dusty plasma ...
متن کاملPlasma crystal: Coulomb crystallization in a dusty plasma.
A macroscopic Coulomb crystal of solid particles in a plasma has been observed. Images of a cloud of 7-p,m "dust" particles, which are charged and levitated in a weakly ionized argon plasma, reveal a hexagonal crystal structure. The crystal is visible to the unaided eye. The particles are cooled by neutral gas to 310 K, and their charge is >9800e, corresponding to a Coulomb coupling parameter r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2017
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.4977454