Physics – Fluid Dynamics
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phys...47..274v&link_type=abstract
Physica Scripta, Vol. 47, No. 2, p. 274 - 277
Physics
Fluid Dynamics
14
Plasma: Fluid Dynamics
Scientific paper
Nonlinear double layers are investistated in dusty plasmas. The dust dynamics is modelled by a highly negatively charged and massive fluid in the presence of two isothermal proton populations. For electrostatic double layers one either integrates the cold dust equations exactly, to get a description in terms of a Sagdeev potential, or one uses a reductive perturbation analysis leading to modified Korteweg-de Vries equations. It is then shown that when the exact Sagdeev potential yields weak double layers, they can be quite different from what one would obtain via more approximate methods, and vice versa. This casts serious doubts upon the adequacy of modified Korteweg-de Vries equations for a weak double layers in more complicated cases where no exact analytical results are available. Such findings are relevant for different kinds of astrophysical and heliospheric plasmas, as well as for ordinary ion-acoustic double layers.
No associations
LandOfFree
Are weak dust-acoustic double layers adequately described by modified Korteweg-de Vries equations? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Are weak dust-acoustic double layers adequately described by modified Korteweg-de Vries equations?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Are weak dust-acoustic double layers adequately described by modified Korteweg-de Vries equations? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1276725