Oscillations of a molecular dusty-plasma crystal
- Authors: Ignatov A.M.1,2
-
Affiliations:
- Prokhorov General Physics Institute
- Pirogov Russian National Research Medical University
- Issue: Vol 43, No 11 (2017)
- Pages: 1072-1079
- Section: Dusty Plasma
- URL: https://journals.rcsi.science/1063-780X/article/view/186283
- DOI: https://doi.org/10.1134/S1063780X17110058
- ID: 186283
Cite item
Abstract
The phonon spectra of a two-layer plasma crystal are analyzed. A simple model describing nonreciprocal forces acting between dust grains is formulated. General trends in the dynamics of a single dust molecule consisting of two vertically aligned grains are described. An integral of motion analogous to energy is found in the harmonic approximation. The conditions allowing the existence of a molecular crystal for which interaction between pairs of grains weakly affects the state of an individual molecule are determined. The oscillation spectra are obtained in an explicit form.
About the authors
A. M. Ignatov
Prokhorov General Physics Institute; Pirogov Russian National Research Medical University
Author for correspondence.
Email: aign@fpl.gpi.ru
Russian Federation, Yongin, Gyeonggy, 119991; Moscow, 117997