Nonquasineutral Current Structures in Plasmas with a zero Net Current

A nonquasineutral vortex structure with a zero net current is described that arises as a result of electron drift in crossed magnetic fields, the latter being produced by charge separation on a spatial scale of about the magnetic Debye radius rB =B-vector/(4πene). In such structure with radius r∼rB, the magnetic field maintained by a drift current on the order of the electron Alfven current JAe = me c3/(2e) and can became as strong as B approx. or approx. = √ 4πnemec2. The system with closed current that is considered in the present paper can also serve as a model of hot spots in the channel of a Z-pinch