Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-27T14:45:00.791Z Has data issue: false hasContentIssue false
  • English
  • Français

Stability and gravitational effects on surface dust-acoustic waves in self-gravitating semi-bounded dusty plasmas

Published online by Cambridge University Press:  11 January 2006

WON-SEOK CHANG ,
IYOUNG MICHELLE JUNG  and
YOUNG-DAE JUNG
WON-SEOK CHANG
Affiliation:
Department of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 426-791, South Korea ([email protected], [email protected])
IYOUNG MICHELLE JUNG
Affiliation:
Hanyoung Foreign Language High School, Seoul 134-837, South Korea
YOUNG-DAE JUNG
Affiliation:
Department of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 426-791, South Korea ([email protected], [email protected])
Get access Rights & Permissions [Opens in a new window]

Abstract

The stable conditions and gravitational effects on the surface dust-acoustic wave are investigated in self-gravitating semi-bounded dusty plasmas. The dispersion relation of the surface dust-acoustic wave is obtained by the plasma dielectric function with the specular reflection boundary condition. It is shown that the surface dust-acoustic wave become unstable for any values of the wave number when $\tfrac{1}{2}\leq (\omega_{\rm J}/\omega_{\rm pd})^2\leq 1$. However, when $(\omega_{\rm J}/\omega_{\rm pd})^2 > 1$ or $(\omega_{\rm J}/\omega_{\rm pd})^2 < \tfrac{1}{2}$, the Jeans instability does not occur for the domain of the wave number $k_z \lambda_{\rm D} > (\omega_{\rm J}/\omega_{\rm pd})|[(\omega_{\rm J}/\omega_{\rm pd})^2 - 1]/[2(\omega_{\rm J}/\omega_{\rm pd})^2 - 1]|^{1/2}$. It is also found that the phase velocity of the surface wave decreases with increasing Jeans frequency.

Type
Papers
Information
Journal of Plasma Physics , Volume 72 , Issue 4 , August 2006 , pp. 485 - 490
Copyright
2006 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)