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  Experimental studies of two-dimensional complex plasma crystals: waves and instabilities

Couëdel, L., Nosenko, V., Zhdanov, S., Ivlev, A. V., Laut, I., Yakovlev, E. V., et al. (2019). Experimental studies of two-dimensional complex plasma crystals: waves and instabilities. Physics-Uspekhi, 62(10), 1000-1011. doi:10.3367/UFNe.2019.01.038520.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-5DCF-A Version Permalink: http://hdl.handle.net/21.11116/0000-0006-5DD0-7
Genre: Journal Article

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Couëdel, L, Author
Nosenko, V, Author
Zhdanov, S, Author
Ivlev, A. V.1, Author              
Laut, I, Author
Yakovlev, E V, Author
Kryuchkov, N P, Author
Ovcharov, P V, Author
Lipaev, A M, Author
Yurchenko, S O, Author
Affiliations:
1Center for Astrochemical Studies at MPE, MPI for Extraterrestrial Physics, Max Planck Society, ou_1950287              

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 Abstract: A review of experimental studies on waves, phonon dispersion relations, and mode-coupling instability in two-dimensional complex plasma crystals is presented. An improved imaging method allowing simultaneous measurements of the three wave modes (compression in-plane, shear in-plane, and out-of-plane) is given. This method is used to evidence the formation of hybrid modes and the triggering of the mode-coupling instability due to wake-mediated interactions. The main stages of the mode-coupling instability are analyzed. In the early stages, synchronization of microparticle motion at the hybrid mode frequency is reported. The spatial orientation of the observed synchronization pattern correlates well with the directions of the maximal increment of the shear-free hybrid mode. When the instability is fully developed, a melting front is formed. The propagation of the melting front has similarities with flame propagation in ordinary reactive matter. Finally, it is experimentally demonstrated that an external mechanical excitation of a stable 2D complex plasma crystal can trigger the mode-coupling instability and lead to the full melting of a two-dimensional complex plasma crystal.

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Language(s): eng - English
 Dates: 2019-10-01
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.3367/UFNe.2019.01.038520
Other: LOCALID: 3228430
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Title: Physics-Uspekhi
  Alternative Title : Phys. Usp.
Source Genre: Journal
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Pages: - Volume / Issue: 62 (10) Sequence Number: - Start / End Page: 1000 - 1011 Identifier: ISSN: 1063-7869