Korteweg-de Vries solitons in inhomogeneous plasma

Transmission and reflection of a soliton in an inhomogeneous plasma are inv estigated. Both the transmission and the reflection can be described by the KdV (Korteweg-de Vries) equations for the discontinuous case. The numbers and magnitudes for transmitted and reflected solitons are analytically give n. The transmission can be described by the KdV-type equation for continuou s varying inhomogeneous plasma, and the quasi-solitons is also analytically given. (C) 1999 American Institute of Physics. [S1070-664X(99)04408-0].