Characteristics of ions in a magnetized plasma sheath with two species of positive ions

Using the hydrodynamic model, the effects of an external oblique magnetic field and the second ion species density oil the characteristics of a three-component (electrons and two species of positive ions) plasma sheath are investigated. It is seen that depending on the magnetic induction of the external field, the velocity and the ion density distributions of both ion species begin to fluctuate. Furthermore, it is shown that density of the second ion species affects the amplitudes of these fluctuations. It is also found that the electrostatic potential of the sheath region depends on the density ratio of positive ion species and by increasing this ratio the electrostatic potential falls down. (c) 2009 Elsevier Ltd. All rights reserved.