Simulation study of a passive plasma beam dump using varying plasma density

Simulation of a Helium Atmospheric Plasma Jet Using Fluid Equations

In this study, a cold atmospheric He plasma jet is investigated. The jet is of dielectric barrier discharge type, consisting of a dielectric tube with two metal ring electrodes. The continuity, momentum and energy conservation equations as well as the Poisson equation for obtaining the potential and the electric field, accompanied with the ideal gas laws, are used for the simulation. The result...

1D PIC simulation study of nonlinear beam plasma interaction

Since the early days of plasma simulation studies, superthermal electrons having energies much greater than the injected beam electrons have been widespreadly observed. The origin of such superthermal tail in the electron velocity distribution is generally believed due to the second order Fermi acceleration, i.e., the acceleration due to turbulence. In this paper, generation of superthermal ele...

Study of hot electron beam transport in high density plasma using 3D hybrid-Darwin code

Trapping of Background Plasma Electrons in a Beam-Driven Plasma Wake Field Using a Downward Density Transition

Trapping of background plasma electrons by a beam-driven plasma wake field is studied as a new self-injection method. In this scheme, a short electron beam pulse is sent through an underdense plasma with a downward density transition and some background plasma electrons are trapped by the strong wake field due to the sudden increase of the wake wave wavelength at the density transition. Two-dim...

Threshold Criterion for a Space Simulation Beam-Plasma Discharge

We have conducted an experimental and theoretical study of the threshold characteristics of a space simulation beam-plasma discharge with emphasis on density profiles and a density-dependent ignition criterion. The study included various beam-plasma conditions covering beam currents from 8 to 85 ma, beam energies from 0.8 to 2.0 keV, and magnetic fields at 0.9 and 1.5 G. The study included expe...