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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2015, Volume 102, Issue 10, Pages 745–751
DOI: https://doi.org/10.7868/S0370274X15220051 (Mi jetpl4790) 		 
This article is cited in 1 scientific paper (total in 1 paper)

CONDENSED MATTER

Analysis of phase transitions in two-dimensional Coulomb clusters by the dynamic entropy method

K. G. Koss, M. I. Myasnikov, O. F. Petrov, K. B. Statsenko

Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow
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DOI: https://doi.org/10.7868/S0370274X15220051
Abstract: The dynamics of two-dimensional clusters consisting of 7 and 18 particles whose interaction is described by a screened Coulomb potential has been numerically simulated by the Langevin molecular dynamics method. With the use of the data obtained for the displacements and velocities of particles, the functions of the “mean first-passage time” dynamic entropy have been obtained for clusters having different kinetic temperatures close to the conditions of laboratory experiments with macroparticles in a gas-discharge plasma. Three phase states of the small systems under consideration—crystal, liquid, and transient—have been observed. A mechanism of phase transitions under consideration has been described. The method proposed to analyze the dynamics of systems can be used for extremely small structures.
Funding agency Grant number
Russian Science Foundation 14-12-01440
Received: 11.08.2015
Revised: 16.09.2015
English version:
Journal of Experimental and Theoretical Physics Letters, 2015, Volume 102, Issue 10, Pages 655–661
DOI: https://doi.org/10.1134/S0021364015220051
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: K. G. Koss, M. I. Myasnikov, O. F. Petrov, K. B. Statsenko, “Analysis of phase transitions in two-dimensional Coulomb clusters by the dynamic entropy method”, Pis'ma v Zh. Èksper. Teoret. Fiz., 102:10 (2015), 745–751; JETP Letters, 102:10 (2015), 655–661
Citation in format AMSBIB
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    • This publication is cited in the following 1 articles:
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