Non-Neutral Plasma
A plasma composed exclusively of a single species of charged particles (electrons, positrons, or single ions) without background charge neutralization.
Governing formula
n_e ≫ n_i (Pure Electron or Ion Plasma)
SI unit
Single-Species Charged Cloud
In depth
Trapped stably in Penning-Malmberg traps using static axial magnetic fields and radial electrostatic end-well potentials. Can be cooled to cryogenic liquid and crystalline solid states.
Examples in the real world
Storing antimatter positrons in Penning traps for antihydrogen synthesis experiments at CERN.