Heat transport in a two-dimensional complex (dusty) plasma at melting conditions.
The heat transport in a two-dimensional complex (dusty) plasma undergoing a phase transition was studied experimentally. A single layer of highly charged polymer microspheres was suspended in a plasma sheath. A part of this lattice was heated by two counterpropagating focused laser beams that moved rapidly around in the lattice and provided short intense random kicks to the particles. Above a threshold, the lattice locally melted. The spatial profiles of the particle kinetic temperature were analyzed to find a thermal conductivity, which did not depend on temperature.
Nosenko
V
V
Max-Planck-Institut für extraterrestrische Physik, D-85741 Garching, Germany.
Zhdanov
S
S
Ivlev
A V
AV
Morfill
G
G
Goree
J
J
Piel
A
A