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Title: Formation of Coulomb crystal in presence of attractive overlapping Debye sphere potential

Abstract

The role of attractive overlapping Debye sphere (ODS) potential on dust crystal formation has been investigated by using molecular dynamics code. A comparative study on plasma crystal formation has been made between Yukawa and coupled Yukawa-ODS potential by calculating pair-correlation function, for different values of Coulomb coupling parameter {Gamma} and screening parameter {kappa}. From our study, it is seen that the attractive ODS potential becomes dominant beyond a critical radius than that of the Yukawa potential. This leads to the fact that the effect due to combined Yukawa-ODS potential depends more sensitively on {kappa}. From the comparison of the results for Yukawa and ODS potential with experimental results, it is observed that a close agreement is obtained for attractive ODS potential.

Authors:
;  [1]
  1. Department of Physics, Tezpur University, Tezpur, Assam 784 028 (India)
Publication Date:
OSTI Identifier:
22043530
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 18; Journal Issue: 9; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPARATIVE EVALUATIONS; CORRELATION FUNCTIONS; COUPLING; CRYSTALS; MOLECULAR DYNAMICS METHOD; PLASMA; PLASMA SIMULATION; SCREENING; YUKAWA POTENTIAL

Citation Formats

Baruah, Swati, and Das, Nilakshi. Formation of Coulomb crystal in presence of attractive overlapping Debye sphere potential. United States: N. p., 2011. Web. doi:10.1063/1.3633238.
Baruah, Swati, & Das, Nilakshi. Formation of Coulomb crystal in presence of attractive overlapping Debye sphere potential. United States. doi:10.1063/1.3633238.
Baruah, Swati, and Das, Nilakshi. Thu . "Formation of Coulomb crystal in presence of attractive overlapping Debye sphere potential". United States. doi:10.1063/1.3633238.
@article{osti_22043530,
title = {Formation of Coulomb crystal in presence of attractive overlapping Debye sphere potential},
author = {Baruah, Swati and Das, Nilakshi},
abstractNote = {The role of attractive overlapping Debye sphere (ODS) potential on dust crystal formation has been investigated by using molecular dynamics code. A comparative study on plasma crystal formation has been made between Yukawa and coupled Yukawa-ODS potential by calculating pair-correlation function, for different values of Coulomb coupling parameter {Gamma} and screening parameter {kappa}. From our study, it is seen that the attractive ODS potential becomes dominant beyond a critical radius than that of the Yukawa potential. This leads to the fact that the effect due to combined Yukawa-ODS potential depends more sensitively on {kappa}. From the comparison of the results for Yukawa and ODS potential with experimental results, it is observed that a close agreement is obtained for attractive ODS potential.},
doi = {10.1063/1.3633238},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 9,
volume = 18,
place = {United States},
year = {2011},
month = {9}
}