Dynamics of melting of spherical Yukawa and Coulomb clusters

Journal Article · Wed Oct 18 00:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2387929· OSTI ID:20891691

Ogawa, Takafumi; Totsuji, Hiroo; Totsuji, Chieko; Tsuruta, Kenji ^[1]

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1. Graduate school of Natural Science and Technology, Okayama University (Japan)

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.

• OSTI ID: 20891691
• Journal Information: AIP Conference Proceedings, Vol. 862, Issue 1; Conference: Non-neutral plasma physics VI: Workshop on non-neutral plasmas 2006, Aarhus (Denmark), 25-29 Jun 2006; Other Information: DOI: 10.1063/1.2387929; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGED PARTICLES
COMPUTERIZED SIMULATION
COULOMB FIELD
MELTING
MOLECULAR DYNAMICS METHOD
MONTE CARLO METHOD
PLASMA
SPECIFIC HEAT
YUKAWA POTENTIAL