Nonrelativistic electromagnetic surface waves propagating on the plane interface between dusty electron-positron plasma and vacuum are investigated by specular reflection procedure. In the presence of an applied magnetic field $\left({\mathbf{B}}_0{=B}_0ŷ\right)$ directed perpendicular to both the interface normal and the wave vector, transverse electromagnetic modes are studied in terms of the dispersion relation. The analytic modes are derived and discussed with the aid of some numerical analysis. The cold electromagnetic surface wave dispersion relation considering the effect of dust particle shows that possible modes appear only when the normalized frequency $\left(\overline{\omega }\right)$ and the wave vector $\left(\overline{K}\right)$ satisfy the condition $\overline{\Omega }<\overline{\omega }<\overline{\Omega }+(1+\delta )/2\mathrm{}$ and $\overline{K}>\overline{\Omega },$ where $\delta {(=n}_{0-}{/n}_{0+})$ is the parameter of charge imbalance in the plasma and $\overline{\Omega }$ is the normalized cyclotron frequency.

• Received 28 July 1999

DOI:https://doi.org/10.1103/PhysRevE.61.4357