Non-quasineutral model of an equilibrium z - pinch

A radically new equilibrium of z-pinch is proposed, where at the scale r0 ∼ √J0 enec / (J0 — the current flowing inside the radius r0, ne — the electron density) the strong charge separation arises, which results in the radial electric field. In this equilibrium, the current is transported near the axis at r≤r0 by the drifting electrons, and at the z-pinch periphery on the scale c/ωpi — by the ions with the velocity viz ∼ c (2ZeJ/mic3), where J - the total current of the z-pinch. In the nonquasineutral core of the z-pinch the radial «temperature» of the ions prove to be of the order of ZeJ0/c. The lifetime of the nonquasineutral region of the z-pinch is limited by the Coulomb collisions of the radially oscillating ions with electrons. For lack of the magnetic field «frozen-in» effect in ions at the nonquasineutral core the z-pinch instability of the neck-type is absent.