Kinetic description of the screening of the charge of macroparticles in a nonequilibrium plasma

Shielding of absorbing objects in collisionless flowing plasma

“…The effect of ion-neutral collisions will most probably modify the results obtained here, as the collisions lead to an r −2 tail in the shielding potential of a test (nonabsorbing) grain in drifting plasmas [23,24], and to an r −1 tail in the shielding potential of an absorbing grain in isotropic plasmas [7,25,26] or drifting strongly collisional plasmas [13]. The generalization of the kinetic model with absorption used in this work, to include collisions, and the study of the effect of absorption on shielding of dust grains in flowing plasmas with arbitrary degree of ion-neutral collisionality, are left for future work.…”

“…Note that in writing out the Eqs (27) and (29) we omitted the common factor exp(−0 · z) that appears due to the term −i0 in (25), which ensures that the field of the grain vanishes at z → +∞ and finite ρ. The plots of φ Q d (ρ, z) and φ abs (ρ, z) in case of superthermal flow are shown in Fig.…”

Electron and ion thermal forces in complex (dusty) plasmas

“…Although it is well recognized that the long range asymptote of the electrical potential can be modified (by e.g. continuous plasma absorption on the grain surface [21][22][23][24] or plasma ionization/recombination effects [25]), this is expected to affect merely grain-grain interactions, but not the momentum transfer from the ions and electrons.…”

Brownian particle in non-equilibrium plasma

“…The appropriate calculations for the case of collisionless plasma were obtained in [14,15] on the basis of the microscopic treatment. In the case of the grain moving in weakly-ionized plasma the basic set of equations for individual component concentration variations can be written in the form [1,2] ∂n α (r, t) ∂t − divΓ α = I 0 − βn e r, t)n i r, t) − S α δ(r − vt) (18) and the Poisson equation for the potential is given by…”