Plasma radio emission from inhomogeneous collisional plasma of a flaring loop

Deduction of plasma ow in a collisional un-magnetized plasma

An argon plasma generated by a torch arc discharge with pressure of 50 torr and power of 800 watts is characterized by a single and Mach probes. A uid model for the owing un-magnetized plasma with the generic two-dimensional feature is established by taking moment of one-dimensional Boltzmann transport equation with contribution of ionization and ion-neutral collisions. Using a new relation b...

Interchange modes in a collisional plasma

Gross plasma stability can derive from plasma compressibility in the bad curvature regions of closed field line systems. In this situation magnetohydrodynamic ~MHD! theory predicts that the maximum pressure gradient that is stable is proportional to g , the ratio of specific heats. This article will examine the accuracy of the MHD prediction for electrostatic interchange modes using kinetic the...

Parametric instability in a collisional dusty plasma

The present work investigates the parametric instability of parallel propagating circularly polarized Alfvén pump waves in a collisional dusty plasma. It is demonstrated that the relative drift between the charged dust and the electrons and ions gives rise to the Hall effect resulting in the modified pump wave characteristics. Although the linearized fluid equations with periodic coefficients a...

Attosecond emission from chromium plasma.

We present the first measurement of the attosecond emission generated from underdense plasma produced on a solid target. We generate high-order harmonics of a femtosecond Ti:sapphire laser focused in a weakly ionized underdense chromium plasma. Using the "Reconstruction of Attosecond Beating by Interference of Two-photon Transitions" (RABITT) technique, we show that the 11th to the 19th harmoni...

Regimes of expansion of a collisional plasma into a vacuum