“…The re-emission responsible for the growth of pulse c can occur at a frequency above the value of 2f2 e associated with the ambient magnetic field via a process known as triggered emission, which has been studied in association with whistler waves in the magnetosphere (Helliwell, 1967;Winglee, 1985a) and the study of gyrotrons (e.g., Sprangle and Drobot, 1977;Read, Chu, and Dudas, 1982). In this process, electrons are phase bunched via gyroresonant interactions with a leading, coherent wave packet.…”