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Transitions in the surface dust-ion-acoustic mode in a self-gravitating semi-bounded magnetized dusty plasma

Published online by Cambridge University Press:  01 October 2007

HWA-MIN KIM  and
YOUNG-DAE JUNG
HWA-MIN KIM
Affiliation:
Department of Electronics Engineering, Catholic University of Daegu, Hayang, Gyongsan, Gyungbuk 712-702, South Korea
YOUNG-DAE JUNG
Affiliation:
Department of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 426-791, South Korea (ydjung@hanyang.ac.kr, yjung@hanyang.ac.kr)
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Abstract

The transitions and the self-gravitational effects on the surface dust-ion-acoustic mode are investigated in semi-bounded magnetized dusty plasmas. We find that there is a dust-ion-acoustic resonance mode in small wave number regions. Furthermore, we find that the self-gravitational effects enhance the resonance frequency. However, the surface wave starts to propagate as the wave number increases. The transition position between the resonance oscillation and the wave propagation is shifted to the smaller wave number domain as self-gravitational effects increase. In addition, the resonance frequency is found to decrease with decreasing strength of the magnetic field in small wave number domains.

Type
Papers
Information
Journal of Plasma Physics , Volume 73 , Issue 5 , October 2007 , pp. 785 - 791
Copyright
Copyright © Cambridge University Press 2006

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