Dynamics of melting of spherical Yukawa and Coulomb clusters

Takafumi Ogawa, Hiroo Totsuji, Chieko Totsuji, Kenji Tsuruta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Spherical Yukawa and Coulomb clusters are composed of charged particles interacting via the Yukawa and Coulomb potential and confined by the external potential. Melting transitions of these clusters are analyzed by Monte Carlo (MC) and molecular dynamics (MD) simulations. By MC simulations, it is found that the specific heat of relatively small clusters (100 ≤ N ≤ 400) has two peaks. The diffusion analyses by MC and MD simulations and the fluctuation analyses related to the Lindemann criteria indicate that two peaks at lower and higher temperatures reflect the losses in ordering in azimuthal and radial directions, respectively.

Original languageEnglish
Title of host publicationNON-NEUTRAL PLASMA PHYSICS VI
Subtitle of host publicationWorkshop on Non-Neutral Plasmas 2006
Pages242-247
Number of pages6
DOIs
Publication statusPublished - Dec 1 2006
EventNON-NEUTRAL PLASMA PHYSICS VI: Workshop on Non-Neutral Plasmas 2006 - Aarhus, Denmark
Duration: Jun 25 2006Jun 29 2006

Publication series

NameAIP Conference Proceedings
Volume862
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherNON-NEUTRAL PLASMA PHYSICS VI: Workshop on Non-Neutral Plasmas 2006
CountryDenmark
CityAarhus
Period6/25/066/29/06

Keywords

  • Coulomb cluster
  • Diffusion
  • Melting
  • Specific heat
  • Yukawa cluster

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Ogawa, T., Totsuji, H., Totsuji, C., & Tsuruta, K. (2006). Dynamics of melting of spherical Yukawa and Coulomb clusters. In NON-NEUTRAL PLASMA PHYSICS VI: Workshop on Non-Neutral Plasmas 2006 (pp. 242-247). (AIP Conference Proceedings; Vol. 862). https://doi.org/10.1063/1.2387929