Oscillating two-stream instability of a plasma wave driven by hot-drifting electrons in fusion plasmas

Large amplitude plasma wave may be susceptible for oscillating two-stream instability by exciting a pair of two electrostatic sidebands and a purely growing low-frequency mode. We revisit this study by incorporating the role of hot-drifting electrons to estimate the growth rate of the instability. The growth of plasma wave strongly is affected due to the hot-drifting electrons and thus the growth rate of the instability is modified in a specific parameter region. The present study shows that there is a new parameter space where the oscillating two-stream instability is driven by the hot-drifting electrons in optical plasmas.