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Rotation effects of elongated dust grains on a surface dust-acoustic wave in a semi-bounded dusty plasma

Published online by Cambridge University Press:  25 November 2005

MYOUNG-JAE LEE  and
YOUNG-DAE JUNG
MYOUNG-JAE LEE
Affiliation:
Department of Physics, Hanyang University, Seoul 133-791, South Korea
YOUNG-DAE JUNG
Affiliation:
Department of Applied Physics, Hanyang University, Ansan Kyunggi-Do 426-791, South Korea (ydjung@hanyang.ac.kr; yjung@ihanyang.ac.kr)
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Abstract

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The surface dust-acoustic wave is investigated in a semi-bounded dusty plasma containing elongated and rotating dust grains. The dispersion relation of the low-frequency surface ion plasma wave is obtained by the plasma dielectric function with the specular reflection boundary condition. The results show that the phase and group velocities of the surface dust-acoustic wave propagating along the plasma–vacuum interface decrease with an increase of the rotation frequency. However, for long wavelengths it is found that the phase and group velocities of the surface wave are independent of the magnitude of the rotation frequency.

Type
Papers
Information
Journal of Plasma Physics , Volume 72 , Issue 2 , April 2006 , pp. 241 - 247
Copyright
2005 Cambridge University Press