A complex plasma vertical oscillation experiment which modifies the bulk is presented. Spherical, micron-sized particles within a Coulomb crystal levitated in the sheath above the powered lower electrode in a GEC reference cell are perturbed using a probe attached to a Zyvex S100 Nanomanipulator. By oscillating the probe potential sinusoidally, particle motion is found to be asymmetric, exhibit...

The addition of Kr dopant to a deuterium or deuterium–tritium dense plasma focus (DPF) is conventionally thought enhance radiative cooling the imploding sheath, resulting in tighter pinch and, under optimized conditions, increased neutron yield [M. Krishnan, IEEE Trans. Plasma Sci. 40, 3189 (2012)]. In this work, 2D radiation magnetohydrodynamic (MHD) simulations are conducted DPF at peak curre...

In high density, temperature plasmas, the plasma sheath that develops can result in extremely electric fields, on order of tens to hundreds V/nm. Under right conditions, these fields reach magnitudes increase probability electron tunneling ionization occur, resulting one or more electron-ion pairs. The presence then modify development sheath, as well properties such ion and densities potential....

The electrostatic Faraday screen(FS) is generally used to suppress the strong electrostatic interaction between the ICRF antenna and edge plasmas near the antenna. It is recognized that FS suppresses the electrostatic field parallel to the magnetic field(E//), and particle and heat fluxes into the antenna current strap effectively. Even with FS, however, impurity generation from FS is a severe ...

The biggest advantage of plasma immersion ion implantation (PIII) is the capability of treating objects with irregular geometry without complex manipulation of the target holder. The effectiveness of this approach relies on the uniformity of the incident ion dose. Unfortunately, perfect dose uniformity is usually difficult to achieve when treating samples of complex shape. The problems arise fr...

To investigate the effect of ion-neutral collisions on plasma sheaths over floating surfaces, experimental measurements of near-wall plasma potential profiles are conducted in a multidipole plasma device with neutral pressures of 1 and 5 mTorr-Ar. Sheath and presheath potential profiles are measured over a HP grade boron nitride sample using an emissive probe, employing the technique of inflect...

Intense laser-produced plasma is a complex amalgamof ions, electrons and atoms both in ground and excited states. Little is known about the spatial composition of the excited states that are an integral part ofmost gaseous or cluster plasma. In cluster-plasma, Rydberg excitations change the charge composition of the ions through charge transfer reactions and shape the angular distributions.Here...