The covariant Vlasov-Maxwell system is used to study breaking of relativistic warm plasma waves. The well-known theory of relativistic warm plasmas due to Katsouleas and Mori (KM) is subsumed within a unified geometric formulation of the ‘waterbag’ paradigm over spacetime. We calculate the maximum amplitude Emax of non-linear longitudinal electric waves for a particular class of waterbags whose...

Fast-wave current drive is demonstrated in Hw Princeton ACT -I toroidal device. The fast Alfven wave, in the range of high ion-cyclotron harmonics, produced 40 A of current from 1 kW of rf power coupled into a plasma hy a fast-wave locp antenna. This wave excites a steady current by damping on the energetic tail of the electron distribution function in the same way as lower-hybrid current drive...

In this paper, the status of the Laser-Plasma Accelerator field within the Advanced Accelerator Concepts area of research is reviewed. In particular, I review the status of the Plasma Beat Wave Acceleration (PBWA) scheme, the SelfModulated, Laser-Wake Field Acceleration (SMLWFA) scheme and the Laser-Wake Field Acceleration (LWFA) scheme. In all these three schemes, charged particles are acceler...

The aim of this paper is to give an account of some applications of pseudodifferential calculus for solving linear wave equations in the limit of high frequency/short wavelength waves. More specifically, on using as a benchmark the case of electromagnetic waves propagating in a cold isotropic slowly spaceand time-varying plasma, it is shown that, in general, linear plasma waves are governed by ...

In GAMMA 10/PDX, ion heating is achieved using slow wave in the cyclotron frequency absorbed near resonance layer. However, high-density plasma, less likely to be excited due shielding effect. To overcome this challenge, researchers have investigated difference (DF) waves by nonlinear interaction of fast been investigated. The can propagate core plasma even making DF-waves an efficient option f...

Abstract—Propagation of arbitrary amplitude nonlinear Alfven waves has been investigated in low but finite β electron-positron-ion plasma including full ion dynamics. Using Sagdeev pseudopotential method an energy integral equation has been derived. The Sagdeev potential has been calculated for different plasma parameters and it has been shown that inclusion of ion parallel motion along the mag...

The two-dimensional wave-breaking of relativistic plasma waves driven by a ultrashort high-power lasers, is described within a framework of cold 2-D fluid theory. It is shown that the transverse nonlinearity of the plasma wave results in temporally increasing transverse plasma oscillation in the wake of the laser pulse, inevitably inducing wave-breaking below the 1-D threshold. A condition for ...

We report on observations of shear Alfvén waves radiated from a source of small transverse size, and the subsequent radial confinement of wave magnetic field energy within a cylindrical plasma. The radius of confinement lies between the kinetic regime of the bulk plasma and the inertial regime at the plasma edge; this radius is found to be a function of wave frequency. Numerical calculations us...