Electrostatic surface waves propagating on the plane interface between a vacuum and a cold magnetized homogeneous plasma are investigated. The surface waves resulting from two different directions of the static magnetic field, normal to the interface and parallel to the direction of wave propagation, have the same frequency provided the strength of the magnetic held is the same. Furthermore, these two surface waves are complementary to each other in the sense that when one wave has strong surface-wave characteristics the other acts like a bulk wave, and vice versa. When the magnetic field is directed perpendicular both to the direction of wave propagation and the interface normal, a non-propagating zero-frequency mode is possible, as well as the two hybrid frequencies.
真空中と冷たい磁化プラズマ中の平面界面を伝播する静電表面波を調査する。静磁場の二つの異なる方向、すなわち界面に垂直な方向と波の伝播方向に平行な方向から生じる表面波は、磁場の強さが同じであれば同じ周波数を有する。さらに、これら二つの表面波は相補的であり、一方の波が強い表面波特性を示すとき、他方の波はバルク波のように振る舞い、その逆もまた同様である。磁場が波の伝播方向と界面法線の両方に垂直に向けられる場合、二つの混成周波数に加えて、非伝播性のゼロ周波数モードが可能となる。