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Effect of turbulence on the dissipation of the space-charge wave in a bounded turbulent plasma column

Title
Effect of turbulence on the dissipation of the space-charge wave in a bounded turbulent plasma column
Author
정영대
Keywords
MOVING TEST CHARGE; ACOUSTIC SURFACE-WAVES; MAGNETIZED PLASMAS; EDGE PLASMA; SLAB; OSCILLONS; FIELD
Issue Date
2016-07
Publisher
AMER INST PHYSICS
Citation
PHYSICS OF PLASMAS, v. 23, NO. 7, Page. 721071-721075
Abstract
The dispersion relation and the dissipation process of the space-charge wave propagating in a bounded plasma such as a cylindrical waveguide are investigated by employing the longitudinal dielectric permittivity that contains the diffusivity based on the Dupree theory of turbulent plasma. We derived the dispersion relation for space-charge wave in terms of the radius of cylindrical waveguide and the roots of the Bessel function of the first kind which appears as the boundary condition. We find that the wave frequency for a lower-order root of the Bessel function is higher than that of a higher-order root. We also find that the dissipation is greatest for the lowest-order root, but it is suppressed significantly as the order of the root increases. The wave frequency and the dissipation process are enhanced as the radius of cylindrical waveguide increases. However, they are always smaller than the case of bulk plasma. We find that the diffusivity of turbulent plasma would enhance the damping of space-charge waves, especially, in the range of small wave number. For a large wave number, the diffusivity has little effect on the damping. Published by AIP Publishing.
URI
https://aip.scitation.org/doi/10.1063/1.4956464http://repository.hanyang.ac.kr/handle/20.500.11754/74449
ISSN
1070-664X; 1089-7674
DOI
10.1063/1.4956464
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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