Experimental Investigation of Electron-Acoustic Waves in Electron Plasmas

Journal Article · Wed Oct 18 00:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2387902· OSTI ID:20891679

Kabantsev, Andrey A; Driscoll, C Fred ^[1]; Valentini, F ^[2]

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1. Department of Physics, University of California at San Diego, La Jolla, CA 92093-0319 (United States)
2. Dipt. di Fisica, Univ. della Calabria, 87036 Rende (Italy)

Electron-acoustic waves have strong linear Landau damping, but are observed as nonlinear BGK modes in experiments with pure electron plasmas. The waves have phase velocity v{phi} {approx_equal} 1.3v-bar, in agreement with theory, and the longest wavelength BGK states exhibit only relatively weak damping. Shorter wavelength modes exhibit a strong decay instability which can be experimentally controlled.

• OSTI ID: 20891679
• Journal Information: AIP Conference Proceedings, Vol. 862, Issue 1; Conference: Non-neutral plasma physics VI: Workshop on non-neutral plasmas 2006, Aarhus (Denmark), 25-29 Jun 2006; Other Information: DOI: 10.1063/1.2387902; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BERNSTEIN MODE
DECAY INSTABILITY
ELECTRON PLASMA WAVES
ELECTRONS
LANDAU DAMPING
NONLINEAR PROBLEMS
PHASE VELOCITY
PLASMA
WAVELENGTHS