title: Ar+ and Xe+ velocities near the presheath-sheath boundary in an Ar/Xe discharge.
abstract: The velocities of Ar+ and Xe+ ions near the presheath-sheath boundary in an Ar/Xe discharge are studied by particle-in-cell Monte Carlo simulation. For a pure argon discharge the argon ion has almost the same velocity profile as it does in the mixture of argon and xenon. Similarly, for a xenon discharge the xenon ion has almost the same velocity profile as it does in the mixture of argon and xenon. The ion speed at the sheath-presheath boundary is the same for an ion in a pure argon or xenon discharge and for the same ion in a mixture of argon and xenon. We conclude that, in our simulation, each ion reaches its own Bohm speed at the presheath-sheath interface.
authors.affiliation: Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA.
authors.forename: J T
authors.initials: JT
authors.lastname: Gudmundsson
authors.forename: M A
authors.initials: MA
authors.lastname: Lieberman