M.S. Aggoune  , R. Abdessemed  , F.Z. Kadid  , S. Drid  , 
    Effect of the Collisional Frequency Variations on the Transmitted Power in Argon Plasma,
    International Journal of Electrical and Power Engineering,
    Volume 1,Issue 2,
    2007,
    Pages 146-151,
    ISSN 1990-7958,
    ijepe.2007.146.151,
    (https://makhillpublications.co/view-article.php?doi=ijepe.2007.146.151)
    Abstract: The investigation of the variations of the electromagnetic power transmitted in a WR 340 waveguide partially filled with argon plasma over a range of frequencies is carried out. Unlike previous approaches where the permittivity of the plasma is either considered constant, or evaluated at a fixed frequency or where the collision frequency is completely neglected, our analysis takes into account the variations of this parameter in determining the power absorbed by the plasma. Results show that at frequencies close to the plasma frequency the amount of power delivered to the plasma is minimal due to maximal attenuation.
    Keywords: Microwave power;collisional plasma;complex permittivity;wave complex constant;skin depth;rectangular waveguide