Harmonic surface wave propagation in plasma. II. Second order harmonic waves generated by two fundamental waves

For pt.I see ibid., vol.22, p.517 (1980). The amplitudes of the signals generated at the combination frequencies of two fundamental surface waves in the whole frequency range of their existence in a cold collisional plasma column are obtained. The interference of the signals arisen at every point in the plasma results in the propagation of two types of waves at each of the combination frequencies. These waves are observed experimentally.