  Zebra-like patterns have been observed in the electron cyclotron emission
spectra from strongly nonequilibrium plasma confined in a table-top mirror
magnetic trap. The analysis of the experimental data suggests that the
formation of zebra-like patterns could eventually be related to modulation of
the whistler waves by the ion-acoustic waves excited during the abrupt ejection
of electrons into a loss cone caused by the development of the whistler
instability under the electron cyclotron resonance condition.
