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Title: Kinetics and energy states of nanoclusters in the initial stage of homogeneous condensation at high supersaturation degrees

Abstract

The condensation of metal vapor in an inert gas is studied by the molecular dynamics method. Two condensation regimes are investigated: with maintenance of partial pressure of the metal vapor and with a fixed number of metal atoms in the system. The main focus is the study of the cluster energy distribution over the degrees of freedom and mechanisms of the establishment of thermal equilibrium. It is shown that the internal temperature of a cluster considerably exceeds the buffer gas temperature and the thermal balance is established for a time considerably exceeding the nucleation time. It is found that, when the metal vapor concentration exceeds 0.1 of the argon concentration, the growth of clusters with the highest possible internal energy occurs, the condensation rate being determined only by the rate of heat removal from clusters.

Authors:
 [1]; ;  [2]
  1. South Ural State University (Russian Federation)
  2. Russian Academy of Sciences, Institute of Metallurgy, Ural Branch (Russian Federation)
Publication Date:
OSTI Identifier:
22069272
Resource Type:
Journal Article
Journal Name:
Journal of Experimental and Theoretical Physics
Additional Journal Information:
Journal Volume: 115; Journal Issue: 5; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7761
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ARGON; DEGREES OF FREEDOM; ENERGY SPECTRA; METALS; MOLECULAR CLUSTERS; MOLECULAR DYNAMICS METHOD; NANOSTRUCTURES; NUCLEATION; PARTIAL PRESSURE; SUPERSATURATION; THERMAL EQUILIBRIUM; VAPORS

Citation Formats

Vorontsov, A. G., E-mail: sas@physics.susu.ac.ru, Gel'chinskii, B. R., and Korenchenko, A. E. Kinetics and energy states of nanoclusters in the initial stage of homogeneous condensation at high supersaturation degrees. United States: N. p., 2012. Web. doi:10.1134/S1063776112100160.
Vorontsov, A. G., E-mail: sas@physics.susu.ac.ru, Gel'chinskii, B. R., & Korenchenko, A. E. Kinetics and energy states of nanoclusters in the initial stage of homogeneous condensation at high supersaturation degrees. United States. doi:10.1134/S1063776112100160.
Vorontsov, A. G., E-mail: sas@physics.susu.ac.ru, Gel'chinskii, B. R., and Korenchenko, A. E. Thu . "Kinetics and energy states of nanoclusters in the initial stage of homogeneous condensation at high supersaturation degrees". United States. doi:10.1134/S1063776112100160.
@article{osti_22069272,
title = {Kinetics and energy states of nanoclusters in the initial stage of homogeneous condensation at high supersaturation degrees},
author = {Vorontsov, A. G., E-mail: sas@physics.susu.ac.ru and Gel'chinskii, B. R. and Korenchenko, A. E.},
abstractNote = {The condensation of metal vapor in an inert gas is studied by the molecular dynamics method. Two condensation regimes are investigated: with maintenance of partial pressure of the metal vapor and with a fixed number of metal atoms in the system. The main focus is the study of the cluster energy distribution over the degrees of freedom and mechanisms of the establishment of thermal equilibrium. It is shown that the internal temperature of a cluster considerably exceeds the buffer gas temperature and the thermal balance is established for a time considerably exceeding the nucleation time. It is found that, when the metal vapor concentration exceeds 0.1 of the argon concentration, the growth of clusters with the highest possible internal energy occurs, the condensation rate being determined only by the rate of heat removal from clusters.},
doi = {10.1134/S1063776112100160},
journal = {Journal of Experimental and Theoretical Physics},
issn = {1063-7761},
number = 5,
volume = 115,
place = {United States},
year = {2012},
month = {11}
}