Nonlinear Wave-particle Interaction and Particle Trapping in Large Amplitude Dust Acoustic Waves

Journal Article · Tue Nov 29 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3659749· OSTI ID:21612192

Chang, Mei-Chu; Teng, Lee-Wen; Lin, I ^[1]

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1. Department of Physics, National Central University, Jhongli, Taiwan 32001 (China)

Large amplitude dust acoustic wave can be self-excited by the strong downward ion flow in a dusty plasma liquid formed by negatively charged dusts suspended in a weakly ionized low pressure discharge. In this work, we investigate experimentally the wave-particle phase space dynamics of the large amplitude dust acoustic wave by connecting the Lagrangian and Eulerian views, through directly tracking particle motion and measuring local dust density fluctuations. The microscopic pictures of wave steepening and breaking, resonant particle-wave crest trapping, and the absence of trough trapping observed in our experiment are constructed.

• OSTI ID: 21612192
• Journal Information: AIP Conference Proceedings, Vol. 1397, Issue 1; Conference: 6. international conference on the physics of dusty plasmas, Garmisch-Partenkirchen (Germany), 16-20 May 2011; Other Information: DOI: 10.1063/1.3659749; (c) 2011 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
AMPLITUDES
DUSTS
FLUCTUATIONS
GLOW DISCHARGES
ION ACOUSTIC WAVES
IONS
LAGRANGIAN FUNCTION
NONLINEAR PROBLEMS
PARTICLES
PHASE SPACE
PLASMA
PLASMA DENSITY
SOUND WAVES
TRAPPING
CHARGED PARTICLES
ELECTRIC DISCHARGES
FUNCTIONS
ION WAVES
MATHEMATICAL SPACE
PLASMA WAVES
SPACE
VARIATIONS