Sheath instabilities in Hall plasmas devices
  New class instabilities is identified in Hall plasmas in configurations with open magnetic field lines. It is shown that sheath resistivity results in a robust instability driven by the equilibrium electric field. It is conjectured that these instabilities play a crucial role in anomalous transport in Hall plasmas devices. 
A. I. Smolyakov, W. Frias, I. D. Kaganovich, Y. Raitses
physics.plasm-ph