Normal Modes of 2D Finite Clusters in Complex Plasmas
- 24 August 2001
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 87 (11), 115002
- https://doi.org/10.1103/physrevlett.87.115002
Abstract
Finite clusters with a small number of charged particles immersed in a complex-plasma environment have been investigated experimentally. Finite clusters in complex plasmas are shown to be a unique system for the excitation and observation of normal modes in bounded charged-particle systems. In systems of 3, 4, and 7 particles, normal-mode oscillations have been excited and from the frequencies of the different modes the key parameters, particle charge, and the screening strength have been derived. This method is proposed to be applied in future microgravity experiments.Keywords
This publication has 16 references indexed in Scilit:
- Laser-excited intershell rotation of finite Coulomb clusters in a dusty plasmaPhysical Review B, 2000
- Packings and defects of strongly coupled two-dimensional Coulomb clusters: Numerical simulationPhysical Review E, 1999
- Observation of dust Coulomb clusters in a plasma trapPhysical Review E, 1998
- Direct observation of a buckling transition during the formation of thin colloidal crystalsColloid and Polymer Science, 1997
- Measurement of the electric charge on particulates forming Coulomb crystals in the sheath of a radiofrequency plasmaPlasma Sources Science and Technology, 1995
- The Freezing of Colloidal Suspensions in Confined SpacesLangmuir, 1995
- Ordering and phase transitions of charged particles in a classical finite two-dimensional systemPhysical Review B, 1994
- Atomic-Ion Coulomb Clusters in an Ion TrapPhysical Review Letters, 1987
- Observation of a Phase Transition of Stored Laser-Cooled IonsPhysical Review Letters, 1987
- Macroscopic electron dimples on the surface of liquid heliumSurface Science, 1982