Self-organized oscillations of strongly coupled dust coulomb clusters in plasma traps
The self-organized oscillation of a strongly coupled dust Coulomb cluster with an elongated cross section in a weakly ionized rectangular plasma trap is investigated. Through an inverse supercritical bifurcation at the low rf power end, a low-frequency (about 5 Hz) limit cycle oscillation of the whole cluster associated with the intracluster compressional lattice wave and phase-locked oscillation of the glow intensity distribution is observed. It is caused by the interplay of the dust motion and the shrinking and expanding of the confining dark space.
Wang
YC
Department of Physics and Center for Complex Systems, National Central University, Chungli, Taiwan 32054, Republic of China.
Juan
WT
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