Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1865029 | Physics Letters A | 2007 | 4 Pages |
Abstract
The dispersion properties of low frequency dust acoustic waves in the strong coupling regime are investigated experimentally in an argon plasma embedded with a mixture of kaolin and MnO2 dust particles. The neutral pressure is varied over a wide range to change the collisional properties of the dusty plasma. In the low collisional regime the turnover of the dispersion curve at higher wave numbers and the resultant region of ∂ω/∂k<0∂ω/∂k<0 are identified as signatures of dust–dust correlations. In the high collisional regime dust neutral collisions produce a similar effect and prevent an unambiguous identification of strong coupling effects.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
P. Bandyopadhyay, G. Prasad, A. Sen, P.K. Kaw,