title: Levitation of cylindrical particles in the sheath of an rf plasma.
abstract: Microrods were levitated in the collisional sheath of a rf plasma. Rods below a critical length settle vertically, parallel to the electric field, while longer rods float horizontally. Usually rods with other inclinations spin about a vertical axis. These experimental features fit well with a model that includes a theoretical profile for the sheath, a plasma model for the screening length, which increases going deeper in the sheath, and a plasma theory for the charging of the rod's elements. Despite the agreement this paper highlights the need for a better understanding of the charging mechanism of bodies in sheaths and of the transition region in collisional sheaths.
authors: Max-Planck Institut für Extraterrestrische Physik, D-85740 Garching, Germany.
authors: B M
authors: BM
authors: Annaratone
authors: A G
authors: AG
authors: Khrapak
authors: A V
authors: AV
authors: Ivlev
authors: G
authors: G
authors: Söllner
authors: P
authors: P
authors: Bryant
authors: R
authors: R
authors: Sütterlin
authors: U
authors: U
authors: Konopka
authors: K
authors: K
authors: Yoshino
authors: M
authors: M
authors: Zuzic
authors: H M
authors: HM
authors: Thomas
authors: G E
authors: GE
authors: Morfill