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Titolo:
Computer simulations of Coulomb crystallization in a dusty plasma
Autore:
Vasut, JA; Hyde, TN;
Indirizzi:
Baylor Univ, Ctr Astrophys Space Phys & Engn Res, Waco, TX 76798 USA Baylor Univ Waco TX USA 76798 s Space Phys & Engn Res, Waco, TX 76798 USA
Titolo Testata:
IEEE TRANSACTIONS ON PLASMA SCIENCE
fascicolo: 2, volume: 29, anno: 2001,
parte:, 1
pagine: 231 - 237
SICI:
0093-3813(200104)29:2<231:CSOCCI>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
YUKAWA SYSTEMS; TRANSITION; LIQUIDS; CRYSTAL;
Keywords:
Box_Tree; colloidal crystal; computer simulations; dust crystal; dusty plasma;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Vasut, JA Baylor Univ, Ctr Astrophys Space Phys & Engn Res, Waco, TX 76798USA Baylor Univ Waco TX USA 76798 ys & Engn Res, Waco, TX 76798 USA
Citazione:
J.A. Vasut e T.N. Hyde, "Computer simulations of Coulomb crystallization in a dusty plasma", IEEE PLAS S, 29(2), 2001, pp. 231-237

Abstract

It has been shown experimentally that under the proper conditions, a dustyplasma system can form an ordered, crystalline state known as a Coulomb ordust crystal. This paper uses a computer simulation to model the behavior of such a system,while several parameters are changed independently of one another, something that is experimentally difficult to do, The computer program used is a modified Barnes-Hut tree code known as "Box_Tree. " Tree codes allow all of the interparticle interactions to be calculated including the medium- and long-range interactions created by distant particles using multipole expansions. The simulation is also used to explore the possibility that the end state of the system may depend (at least in part) on its past history (whether it is Initially in a solid or disordered state), or the evolution of kappa and Gamma themselves. As expected, it is shown that as thecoupling parameter increases the amount of order present within a system also increases. Unexpectedly, the simulation also shows that the amount of order present within a dusty plasma system is not necessarily completely determined by Gamma (3) and kappa.

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Documento generato il 13/07/20 alle ore 08:02:23