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Home > Archives > Volume 19, No 11 (2021) > Article

DOI: 10.14704/nq.2021.19.11.NQ21182

Spectroscopy of the Mirror Instability Growth Rate in Hollow Electrodes Discharge (HED) Plasma

Murad M. Kadhim and Qusay A. Abbas


In this work, an experimental study was conducted about the effect of gas pressure on the growth rate of the mirror instability produced in hollow electrodes discharge (HED) plasma in two regions: inter-electrodes gap and internal cathode cavity, by optical emission spectroscopy. Optical emission spectroscopy measurements, at different gas pressures in two regions under study, show that the electron number density (ne) increase with increasing gas pressure from 0.04 to 0.2 Torr. While the electron temperature (Te) decrease with increased gas pressure. In addition, the growth rate increase with increasing electron temperature anisotropy in both regions.


Hollow Electrodes Discharge (HED), Mirror Instability, Optical Emission Spectroscopy (OES), Electron Temperature (T_e), Electron Number Density (n_e).

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