Modulation Instability of Ion-Acoustic Waves in Plasma with Nonthermal Electrons

Figure 6

Plot of growth rate versus wave number 𝑘 for different values of positron concentration (𝜒). Curves labelled a, b, and c correspond to 𝜒=0, 0.02, and 0.04, respectively. 𝛽=0.01, 𝜎_𝑝=0.01, and 𝜎_𝑖=0.01.