Collective Modes in Strongly Correlated Yukawa Liquids: Waves in Dusty Plasmas

Journal Article · Mon Jun 26 00:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.6030· OSTI ID:20216911

Kalman, G ^[1]; Rosenberg, M ^[2]; DeWitt, H E ^[3]

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1. Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467 (United States)
2. Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093 (United States)
3. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

We determine the collective mode structure of a strongly correlated Yukawa fluid, with the purpose of analyzing wave propagation in a strongly coupled dusty plasma. We identify a longitudinal plasmon and a transverse shear mode. The dispersion is characterized by a low-k acoustic behavior, a frequency maximum well below the plasma frequency, and a high-k merging of the two modes around the Einstein frequency of localized oscillations. The damping effect of collisions between neutrals and dust grains is estimated. (c) 2000 The American Physical Society.

• OSTI ID: 20216911
• Journal Information: Physical Review Letters, Vol. 84, Issue 26; Other Information: PBD: 26 Jun 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA WAVES
DUSTS
PLASMONS
YUKAWA POTENTIAL
THEORETICAL DATA