title: Direct excitation of high-amplitude chirped bucket-BGK modes.
abstract: For the first time, high amplitude (Deltan/n approximately 40%), high Q (up to 100 000) Bernstein, Greene, and Kruskal modes have been controllably excited in a plasma. The modes are created by sweeping an excitation voltage downwards in frequency, thereby dragging a phase space "bucket" of low density into the bulk of the plasma velocity distribution. The modes have no linear limit and differ markedly from plasma waves and Trivelpiece-Gould modes.
authors.affiliation: Department of Physics, University of California-Berkeley, Berkeley California 94720, USA.
authors.forename: W
authors.initials: W
authors.lastname: Bertsche
authors.forename: J
authors.initials: J
authors.lastname: Fajans
authors.forename: L
authors.initials: L
authors.lastname: Friedland