Backward propagated ion-acoustic instability in collision-dominated argon plasma

摘要: The possibility of backward propagation the ion-acoustic instability (IAI) in collision dominated weakly ionized plasmas placed external d.c. electric field, previously predicted within frames kinetic theory is further studied. developed indicates that there a narrow band wavelengths which waves (IAW) strongly collisional domain are excited. IAW seen to set for electron drifts above (or, alternatively, i-n rates below) some critical value depending on Eo/nn. transport parameters determining criterion evaluated argon using two particular steady-state distribution functions (EDFs), take into account specific feature dominant elastic e-n momentum transfer cross section range energies up 16 eV. It shown ionized, low-temperature, non-equilibrium plasma propagated IAI can be expected higher values Eo/nn, provided ratio order 10−3.