Dispersion of Plasma Dust Acoustic Waves in the Strong-Coupling Regime.
نویسندگان
چکیده
Low-frequency compressional waves were observed in a suspension of strongly coupled 9.4 mm spheres in an rf Kr plasma. Both parts of the complex wave number were measured to determine the dispersion relation, which agreed with a theoretical model of damped dust acoustic waves, ignoring strong coupling, but not with a strongly coupled dust-lattice wave model. The results yield experimental values for the dust plasma frequency, charge, Debye length, and damping rate, and support the applicability of fluid-based dispersion relations to strongly coupled dusty plasmas, which has been a controversy. [S0031-9007(96)01326-9]
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ورودعنوان ژورنال:
- Physical review letters
دوره 77 15 شماره
صفحات -
تاریخ انتشار 1996