title: Autoresonances of m=2 diocotron oscillations in non-neutral electron plasmas.
abstract: The existence of autoresonances for m=2 diocotron oscillations of non-neutral electron plasmas in a uniform magnetic field was predicted by particle-in-cell simulations and it was confirmed in experiments. The obtained results show clear deviations from the standard threshold amplitude dependence on the sweep rate. The threshold amplitude approaches a constant at a lower sweep rate when there is a damping force. It was also found that the aspect ratio for the oval cross section of the confined plasma can be controlled by the frequency of the externally applied driving force.
authors.affiliation: Zalman Shazar 6/25, Kiryat Motzkin, Haifa 2623024, Israel.
authors.forename: K
authors.initials: K
authors.lastname: Gomberoff
authors.affiliation: Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Higaki
authors.affiliation: Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Kaga
authors.affiliation: Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ito
authors.affiliation: Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Okamoto