On the study of ion mass in the collisionless magnetized plasma sheath

The ion dynamics that enter the collisionless plasma sheath have been investigated in the presence of an external magnetic field. In various masses of the ions and various directions of the magnetic field, the electron and ion density distribution, ion flow velocity have been calculated numerically by using a fluid model. In this work, the ion mass dependence of the characteristics of collisionless plasma sheath is examined. Moreover, the structure of plasma sheath in an oblique magnetic field is studied. It will be shown that, the lighter ions have more gyration then heavier ones.