H. Ali, N. and R. Abdulameer , M. 2026. The Effect of Cross-sectional Area of The Microwave Argon Discharge Tube on Some Plasma Parameters using COMSOL Multiphysics. Iraqi Journal of Physics. 24, 1 (Mar. 2026), 85–98. DOI:https://doi.org/10.30723/ijp.v24i1.1405.