Анотація:
The equilibrium and the non-local stability problem of cylinder plasma, consisting of magnetized electrons and unmagnetized
ions, having been born at rest under the ionization of the residual gas, are considered. The equilibrium distribution
function of such ions is used. The dispersion equation of eigen helical plasma waves is obtained analytically
and solved numerically for various azimuth wave numbers. For the lowest radial modes the instability of «negative
mass»-type is possible having the frequency of the order of ion radial oscillation one and the growth rate up to 0.5 of it.