THE EFFECT OF A HF ELECTRIC-FIELD ON THE PROPAGATION OF AN ELECTROSTATIC WAVE IN A NONUNIFORM PLASMA WAVE-GUIDE

An analytical study of the reflection of an electrostatic wave propaga ting along a magnetized nonuniform plasma slab subject to an intense H F electric field is presented. It is found that when the frequency of the incident wave omega(g) is close to the electron plasma frequency o mega(Pc), the plasma is less reflective due to the presence of the HF held. On the other hand, for a low-frequency incident wave (omega(g) s imilar to omega(Pi)), the reflection coefficient is directly proportio nal to the amplitude of the HF field.