A well localized packet of ion-acoustic waves propagating in a collisionless unmagnetized plasma produces long-range second-order perturbations of the moments of the electron distribution function due to those electrons which cross the region where the electric field is present, take a "kick", and carry this information at large distances from the packet itself. An extended "halo" is thus formed around the wavepacket, with an intensity decreasing in space typically according to a power- law. This "halo" contains electrostatic as well as magnetic perturbations.
Long-range perturbations produced by a localized packet of ion-acoustic waves in a collisionless plasma
Lontano M;
2002
Abstract
A well localized packet of ion-acoustic waves propagating in a collisionless unmagnetized plasma produces long-range second-order perturbations of the moments of the electron distribution function due to those electrons which cross the region where the electric field is present, take a "kick", and carry this information at large distances from the packet itself. An extended "halo" is thus formed around the wavepacket, with an intensity decreasing in space typically according to a power- law. This "halo" contains electrostatic as well as magnetic perturbations.File in questo prodotto:
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