Transverse waves in a two-dimensional screened-coulomb crystal (Dusty plasma) |
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Authors: | Nunomura Samsonov Goree |
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Institution: | Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242, USA. |
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Abstract: | Transverse shear waves were observed experimentally in a two-dimensional screened Coulomb crystal. They were excited by applying a chopped laser beam to a 2D dusty plasma, i.e., a monolayer of charged microspheres levitated in a plasma. Measurements of the dispersion relation reveal an acoustic, i.e., nondispersive, character over the entire range of wave numbers measured, 0.2
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