title: Nonviscous motion of a slow particle in a dust crystal under microgravity conditions.
abstract: Subsonic motion of a large particle moving through the bulk of a dust crystal formed by negatively charged small particles is investigated using the PK-3 Plus laboratory onboard the International Space Station. Tracing the particle trajectories shows that the large particle moves almost freely through the bulk of the plasma crystal, while dust particles move along characteristic α-shaped pathways near the large particle. In the hydrodynamic approximation, we develop a theory of nonviscous dust particle motion about a large particle and calculate particle trajectories. Good agreement with experiment validates our approach.
authors.affiliation: Joint Institute of High Temperatures, Russian Academy of Sciences, Izhorskaya 13, Bd. 2, 125412 Moscow, Russia. dmr@ihed.ras.ru
authors.forename: D I
authors.initials: DI
authors.lastname: Zhukhovitskii
authors.forename: V E
authors.initials: VE
authors.lastname: Fortov
authors.forename: V I
authors.initials: VI
authors.lastname: Molotkov
authors.forename: A M
authors.initials: AM
authors.lastname: Lipaev
authors.forename: V N
authors.initials: VN
authors.lastname: Naumkin
authors.forename: H M
authors.initials: HM
authors.lastname: Thomas
authors.forename: A V
authors.initials: AV
authors.lastname: Ivlev
authors.forename: M
authors.initials: M
authors.lastname: Schwabe
authors.forename: G E
authors.initials: GE
authors.lastname: Morfill
mesh_terms: D003198:Computer Simulation; D003460:Crystallization; D004391:Dust; D057446:Hydrodynamics; D008962:Models, Theoretical; D009038:Motion; D055672:Static Electricity; D014783:Viscosity; D014893:Weightlessness
chemical_list: D004391:Dust