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Title: Catastrophic instabilities of modified DA-DC hybrid surface waves in a semi-bounded plasma system

Abstract

We find the catastrophic instabilities and derive the growth rates for the dust-cyclotron resonance (DCR) and dust-rotation resonance (DRR) modes of the modified dust-acoustic and dust-cyclotron (DA-DC) hybrid surface waves propagating at the plasma–vacuum interface where the plasma is semi-bounded and composed of electrons and rotating dust grains. The effects of magnetic field and dust rotation frequency on the DCR- and DDR-modes are also investigated. We find that the dust rotation frequency enhances the growth rate of DCR-mode and the effect of dust rotation on this resonance mode decreases with an increase of the wave number. We also find that an increase of magnetic field strength enhances the DCR growth rate, especially, for the short wavelength regime. In the case of DRR-mode, the growth rate is found to be decreased less sensitively with an increase of the wave number compared with the case of DCR, but much significantly enhanced by an increase of dust rotation frequency. The DRR growth rate also decreases with an increase of the magnetic field strength, especially in the long wavelength regime. Interestingly, we find that catastrophic instabilities occur for both DCR- and DRR-modes of the modified DA-DC hybrid surface waves when the rotational frequency ismore » close to the dust-cyclotron frequency. Both modes can also be excited catastrophically due to the cooperative interaction between the DCR-mode and the DRR-mode.« less

Authors:
 [1];  [2]
  1. Department of Physics and Research Institute for Natural Sciences, Hanyang University, Seoul 04763 (Korea, Republic of)
  2. Department of Applied Physics and Department of Bionanotechnology, Hanyang University, Ansan, Kyunggi-Do 15588, South Korea and Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590 (United States)
Publication Date:
OSTI Identifier:
22598978
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CYCLOTRON FREQUENCY; CYCLOTRON RESONANCE; CYCLOTRONS; DUSTS; INSTABILITY; INTERFACES; MAGNETIC FIELDS; PLASMA; ROTATING PLASMA; SURFACES; WAVE PROPAGATION; WAVELENGTHS

Citation Formats

Lee, Myoung-Jae, and Jung, Young-Dae, E-mail: ydjung@hanyang.ac.kr. Catastrophic instabilities of modified DA-DC hybrid surface waves in a semi-bounded plasma system. United States: N. p., 2016. Web. doi:10.1063/1.4954153.
Lee, Myoung-Jae, & Jung, Young-Dae, E-mail: ydjung@hanyang.ac.kr. Catastrophic instabilities of modified DA-DC hybrid surface waves in a semi-bounded plasma system. United States. doi:10.1063/1.4954153.
Lee, Myoung-Jae, and Jung, Young-Dae, E-mail: ydjung@hanyang.ac.kr. Wed . "Catastrophic instabilities of modified DA-DC hybrid surface waves in a semi-bounded plasma system". United States. doi:10.1063/1.4954153.
@article{osti_22598978,
title = {Catastrophic instabilities of modified DA-DC hybrid surface waves in a semi-bounded plasma system},
author = {Lee, Myoung-Jae and Jung, Young-Dae, E-mail: ydjung@hanyang.ac.kr},
abstractNote = {We find the catastrophic instabilities and derive the growth rates for the dust-cyclotron resonance (DCR) and dust-rotation resonance (DRR) modes of the modified dust-acoustic and dust-cyclotron (DA-DC) hybrid surface waves propagating at the plasma–vacuum interface where the plasma is semi-bounded and composed of electrons and rotating dust grains. The effects of magnetic field and dust rotation frequency on the DCR- and DDR-modes are also investigated. We find that the dust rotation frequency enhances the growth rate of DCR-mode and the effect of dust rotation on this resonance mode decreases with an increase of the wave number. We also find that an increase of magnetic field strength enhances the DCR growth rate, especially, for the short wavelength regime. In the case of DRR-mode, the growth rate is found to be decreased less sensitively with an increase of the wave number compared with the case of DCR, but much significantly enhanced by an increase of dust rotation frequency. The DRR growth rate also decreases with an increase of the magnetic field strength, especially in the long wavelength regime. Interestingly, we find that catastrophic instabilities occur for both DCR- and DRR-modes of the modified DA-DC hybrid surface waves when the rotational frequency is close to the dust-cyclotron frequency. Both modes can also be excited catastrophically due to the cooperative interaction between the DCR-mode and the DRR-mode.},
doi = {10.1063/1.4954153},
journal = {Physics of Plasmas},
number = 6,
volume = 23,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}