Fundamental physics and other applications using nonneutral plasma

G Maero, ED Hunter, DJ Murtagh… - Advances in Physics …, 2024 - Taylor & Francis
During the last fifty years, nonneutral plasma physics has developed into a definite subfield
of basic research, whose main focus has been on the collective properties of systems …

Dynamics of elliptical vortices with continuous profiles

L Xu, R Krasny - Physical Review Fluids, 2023 - APS
This work examines the dynamics of elliptical vortices in two-dimensional ideal fluid using
an adaptively refined and remeshed vortex method. Four examples are considered …

Resonant excitation of single Kelvin–Helmholtz high-order waves in a magnetized electron fluid vortex

G Maero, N Panzeri, L Patricelli… - Journal of Plasma Physics, 2023 - cambridge.org
Thanks to the isomorphism between the drift-Poisson and Euler equations, inviscid two-
dimensional fluid experiments can be performed in magnetized, single-component plasmas …

Measurements of Penning-Malmberg trap patch potentials and associated performance degradation

CJ Baker, W Bertsche, A Capra, CL Cesar… - Physical Review …, 2024 - APS
Antiprotons created by laser ionization of antihydrogen are observed to rapidly escape the
ALPHA trap. Further, positron plasmas heat more quickly after the trap is illuminated by laser …

[HTML][HTML] Vortex splitting in two-dimensional fluids and non-neutral electron plasmas with smooth vorticity profiles

NC Hurst, A Tran, P Wongwaitayakornkul… - Physics of …, 2024 - pubs.aip.org
Initially, elliptical, quasi-two-dimensional (2D) fluid vortices can split into multiple pieces if
the aspect ratio is sufficiently large due to the growth and saturation of perturbations known …

[HTML][HTML] Single-shot fast cinematic imaging during merging process of multiple electron filaments in electrostatic potential well

T Okada, H Himura, Y Nakajima… - Review of Scientific …, 2024 - pubs.aip.org
For the first time, details of the spatial and temporal acceptable evolution of the merging
process of co-rotating electron vortices in a potential well are successfully captured using a …

Inviscid damping of an elliptical vortex subject to an external strain flow

P Wongwaitayakornkul, JR Danielson, NC Hurst… - Physics of …, 2022 - pubs.aip.org
Inviscid spatial Landau damping is studied experimentally for the case of oscillatory motion
of a two-dimensional vortex about its elliptical equilibrium in the presence of an applied …

Eulerian simulations of electrostatic waves in plasmas with a single sign of charge

S Cristofaro, O Pezzi, TM O'Neil, P Veltri… - Physics of Plasmas, 2022 - pubs.aip.org
An Eulerian, numerical simulation is used to model the launching of plasma waves in a non-
neutral plasma that is confined in a Penning–Malmberg trap. The waves are launched by …