Based on self-consistent modelling of the radio-frequency sheath parameters, such as ion and electron densities velocity, dust particle charging process in an RF is investigated by employing kappa $(\kappa )$ distribution for electrons. It shown that charge number decreases near sheath–wall interface while it shows opposite tendency plasma-sheath edge, $\kappa$ value decreased. The fluctuation ...

Among the fundamental and most challenging problems of laboratory, space, astrophysical plasma physics is to understand relaxation processes nearly collisionless plasmas toward quasi-stationary states; resultant states electromagnetic turbulence. Recently, it has been argued that solar wind $\beta$ temperature anisotropy observations may be regulated by kinetic instabilities such as ion-cyclotr...

Tokamak plasma transport equations are usually obtained by flux surface averaging the collisional Braginskii equations. However, tokamak plasmas are not in collisional regimes. Also, ad hoc terms are added for neoclassical effects on the parallel Ohm’s law, fluctuation-induced transport, heating, current-drive and flow sources and sinks, small magnetic field nonaxisymmetries, magnetic field tra...

Tokamak plasma transport equations are usually obtained by flux surface averaging the collisional Braginskii equations. However, tokamak plasmas are not in collisional regimes. Also, ad hoc terms are added for: neoclassical effects on the parallel Ohm’s law; fluctuation-induced transport; heating, current-drive and flow sources and sinks; small magnetic field non-axisymmetries; magnetic field t...

The mechanisms for anomalous transport across the magnetic field are investigated in a toroidal magnetized plasma. The role of plasma instabilities and macroscopic density structures (blobs) is discussed. Examples from a scenario with open magnetic field lines are shown. A transition from a main plasma region into a loss region is reproduced. In the main plasma, which includes particle and heat...

The view to the quark gluon plasma phase (QGP) in heavy ion collisions is obscured by events taking place later on. One way around this is to focus on conserved charges, such as electric charge, baryon number or strangeness.1,2 Later evolution can only change these charges locally, through pair creation or annihilation, but charge fluctuations with long enough wavelengths will remain unchanged....

Unstable fluctuations develop in the initially quiescent plasma in the improved confinement mode of the H-1 heliac when the radial electric field (Er) shear exceeds some critical value. These unstable Er shear-driven modes are shown to generate zonal-flow-like poloidally symmetric potential structures, similar to those generated in the low confinement mode (Shats M G and Solomon W M 2002 Phys. ...

A kinetic description of collective plasma effects for the thermonuclear reaction rates based on the generalization of modern plasma fluctuation approach shows that, in contrast to Salpeter’s enhancement, a decrease of the thermonuclear reaction rates is present which is larger for larger nuclei charge. By numerical evaluation of the thermonuclear reaction rates in the solar interior it is foun...

The density collapse was observed in the improved confinement mode sustained by the hot cathode biasing in Tohoku University Heliac (TU-Heliac). The density profiles showed the steep gradient around the core plasma region before the collapse. The steep density profile collapsed accompanied with the bursting high frequency fluctuation (100 < f < 500 kHz), which had m = 2 ~ 3 poloidal mode number...