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Title: Trapped Particles by Large-Amplitude Waves in 2D Yukawa Liquids

Abstract

In an ordinary plasma, trapping of a particle of velocity {nu} occurs when its kinetic energy in the wave frame is smaller than the wave potential, i.e., when q{phi}{sub pp}>(1/2)m({nu}-{nu}{sub {phi}}){sup 2}. However, simulation with Brownian Dynamics method shows that the situation is quite different in a strongly-coupled complex plasma (SCCP), where trapping of a particle requires additional energy to overcome the potential barrier formed by all the other particles (the ''cage''), and the trapping condition then reads: q{phi}{sub pp}>(1/2)m({nu}-{nu}{sub {phi}}){sup 2}+{phi}{sub c}. It is found that, because of strong-coupling effect, the particle trapping has no direct connection with so-called ''resonant'' particles. Meanwhile, detrapping process becomes significant in SCCP, and all trapped particles have a finite trapping lifetime decaying exponentially with a rate related to its mean free path.

Authors:
;  [1]
  1. Institut fuer Experimentelle und Angewandte Physik, Christian-Albrechts Universitaet, Kiel (Germany)
Publication Date:
OSTI Identifier:
21251248
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1041; Journal Issue: 1; Conference: 5. international conference on the physics of dusty plasmas, Ponta Degada, Azores (Portugal), 18-23 May 2008; Other Information: DOI: 10.1063/1.2996960; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COMPUTERIZED SIMULATION; DRIFT INSTABILITY; KINETIC ENERGY; LIFETIME; LIQUIDS; MEAN FREE PATH; PARTICLES; PLASMA; PLASMA CONFINEMENT; PLASMA SIMULATION; PLASMA WAVES; POTENTIALS; RF SYSTEMS; TRAPPING

Citation Formats

Lujing, Hou, and Piel, Alexander. Trapped Particles by Large-Amplitude Waves in 2D Yukawa Liquids. United States: N. p., 2008. Web. doi:10.1063/1.2996960.
Lujing, Hou, & Piel, Alexander. Trapped Particles by Large-Amplitude Waves in 2D Yukawa Liquids. United States. https://doi.org/10.1063/1.2996960
Lujing, Hou, and Piel, Alexander. 2008. "Trapped Particles by Large-Amplitude Waves in 2D Yukawa Liquids". United States. https://doi.org/10.1063/1.2996960.
@article{osti_21251248,
title = {Trapped Particles by Large-Amplitude Waves in 2D Yukawa Liquids},
author = {Lujing, Hou and Piel, Alexander},
abstractNote = {In an ordinary plasma, trapping of a particle of velocity {nu} occurs when its kinetic energy in the wave frame is smaller than the wave potential, i.e., when q{phi}{sub pp}>(1/2)m({nu}-{nu}{sub {phi}}){sup 2}. However, simulation with Brownian Dynamics method shows that the situation is quite different in a strongly-coupled complex plasma (SCCP), where trapping of a particle requires additional energy to overcome the potential barrier formed by all the other particles (the ''cage''), and the trapping condition then reads: q{phi}{sub pp}>(1/2)m({nu}-{nu}{sub {phi}}){sup 2}+{phi}{sub c}. It is found that, because of strong-coupling effect, the particle trapping has no direct connection with so-called ''resonant'' particles. Meanwhile, detrapping process becomes significant in SCCP, and all trapped particles have a finite trapping lifetime decaying exponentially with a rate related to its mean free path.},
doi = {10.1063/1.2996960},
url = {https://www.osti.gov/biblio/21251248}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1041,
place = {United States},
year = {Sun Sep 07 00:00:00 EDT 2008},
month = {Sun Sep 07 00:00:00 EDT 2008}
}