Ordered dust structures in a glow discharge

Journal Article · Fri Feb 15 04:00:00 EST 2008 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1007/S11447-008-2018-8· OSTI ID:21075602

Ivanov, A Yu; Dzlieva, E S; Eikhval'd, A I ^[1]

---

1. St. Petersburg State University, Institute of Physics (Russian Federation)

Highly ordered three-dimensional dust structures are created in a striated glow discharge, and their horizontal cross-sectional images are analyzed. Calculated correlation functions, local correlation parameters, and corresponding approximations are used to classify the state of a structure according to the Kosterlitz-Thouless-Halperin-Nelson-Young (KTHNY) two-dimensional melting theory and a phenomenological approach. An orientational map based on an orientational parameter is proposed to expose domains in a cross section of a structure. It is shown that a plasma crystal is a polycrystal consisting of hexagonal domains (crystallites). Thermophoretic forces are used to create corners of various angles in the perimeter of the structure. Transition between hexagonal and square cell shapes is observed.

• OSTI ID: 21075602
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 2 Vol. 106; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
CORRELATION FUNCTIONS
CROSS SECTIONS
DUSTS
GLOW DISCHARGES
IMAGES
MAPS
MELTING
PLASMA
POLYCRYSTALS
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS