Nosenko, V. ; Avinash, K. ; Goree, J. ; Liu, B. (2004) Nonlinear interaction of compressional waves in a 2D dusty plasma crystal Physical Review Letters, 92 (8). Article ID 085001. ISSN 0031-9007
|
PDF
174kB |
Official URL: http://journals.aps.org/prl/abstract/10.1103/PhysR...
Related URL: http://dx.doi.org/10.1103/PhysRevLett.92.085001
Abstract
Nonlinear mixing and harmonic generation of compressional waves were studied in a 2D Yukawa (screened Coulomb) triangular lattice. The lattice was a monolayer of highly charged polymer microspheres levitated in a plasma sheath. Two sinusoidal waves with different frequencies were excited in the lattice by pushing the particles with modulated Ar+ laser beams. Waves at the sum and difference frequencies and harmonics were observed propagating in the lattice. Phonons interacted nonlinearly only above an excitation-power threshold due to frictional damping, as predicted by theory.
Item Type: | Article |
---|---|
Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 102902 |
Deposited On: | 09 Mar 2018 10:44 |
Last Modified: | 09 Mar 2018 10:44 |
Repository Staff Only: item control page