  The comparative analysis of the results of experimental investigations of the
processes of formation, interaction and dynamics of vortex structures in pure
electron and gas-discharge electron nonneutral plasmas taking place for the
period of time much less than the electron-neutral collision time has been
given. The general processes of formation and behavior of vortex structures in
these two plasmas were considered. The phenomena, taking place only in one of
these plasmas were also considered. It is shown that the existing difference in
behavior of vortex structures is caused by different initial states of
nonneutral electron plasmas. The role of vortex structures in the processes
taking place in nonneutral electron plasma is discussed.
