2 research outputs found
Shear flow in a three-dimensional complex plasma in microgravity conditions
Shear flow in a three-dimensional complex plasma was experimentally studied
in microgravity conditions using Plasmakristall-4 (PK-4) instrument on board
the International Space Station (ISS). The shear flow was created in an
extended suspension of microparticles by applying the radiation pressure force
of the manipulation-laser beam. Individual particle trajectories in the flow
were analyzed and from these, using the Navier-Stokes equation, an upper
estimate of the complex plasma's kinematic viscosity was calculated in the
range of --. This estimate is much lower than previously
reported in ground-based experiments with 3D complex plasmas. Possible reasons
of this difference are discussed.Comment: 5 pages, 4 figure