HR: 1340h
AN: SM23A-0469    [Abstracts]
TI: Observation of the Reactive Component of Langmuir Wave-Electron Phase Bunching
AU: * Kletzing, C A
EM: craig-kletzing@uiowa.edu
AF: University of Iowa, Department of Physics and Astronomy, 203 Van Allen Hall, Iowa City, IA 52242 United States
AU: Bounds, S R
EM: scott-bounds@uiowa.edu
AF: University of Iowa, Department of Physics and Astronomy, 203 Van Allen Hall, Iowa City, IA 52242 United States
AU: LaBelle, J
EM: jlabelle@einstein.dartmouth.edu
AF: Dartmouth College, Department of Physics and Astronomy, 6127 Wilder Laboratory, Hanover, NH 03755 United States
AU: Samara, M
EM: marilia.samara@dartmouth.edu
AF: Dartmouth College, Department of Physics and Astronomy, 6127 Wilder Laboratory, Hanover, NH 03755 United States
AB: Observations from the Rocket Auroral Correlator Experiment (RACE), launched on February 6, 2002 from Poker Flat, Alaska, show show clear evidence of phase bunching of the electrons by Langmuir waves. The measurements were made by a new wave-particle correlator during a period when the Langmuir waves were very monochromatic and the amplitude varied slowly in time. The electrons, which are at energies well below the inverted-V peak energy, are found to be bunched at 90 degrees with respect to the wave field indicating that they are the reactive component of the perturbed distribution function. This is in agreementwith theory that predicts this phase relation for the transit of electrons through a very long wave field.
DE: 2407 Auroral ionosphere (2704)
DE: 2455 Particle precipitation
DE: 2471 Plasma waves and instabilities
DE: 2483 Wave/particle interactions
DE: 2704 Auroral phenomena (2407)
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting