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          Institute: MPI für extraterrestrische Physik     Collection: Theory & Complex Plasmas     Display Documents



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ID: 11033.0, MPI für extraterrestrische Physik / Theory & Complex Plasmas
Particle interaction measurements in a Coulomb crystal using caged-particle motion
Authors:Quinn, R. A.; Goree, J.
Language:English
Date of Publication (YYYY-MM-DD):2002-05-13
Title of Journal:Physical Review Letters
Journal Abbrev.:Phys. Rev. Lett.
Volume:88
Issue / Number:19
Start Page:195001-1
End Page:195001-4
Sequence Number of Article:195001
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:A technique for characterizing the particle interaction potential of a Coulomb crystal is developed. The mean-square displacement (MSD) is measured, showing both caged- and superdiffusive-particle motions. By subtracting the center of mass of neighboring particles in computing MSD, only short- wavelength particle motions are retained. This yields the lattice Einstein frequency, which contains information about the interparticle forces and potentials. Video measurements of particle motions in a complex (dusty) plasma are used to demonstrate the technique.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für extraterrestrische Physik
External Affiliations:Max Planck Inst Extraterr Phys, D-85748 Garching, Germany; Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA
Identifiers:ISI:000175324900021
ISSN:0031-9007
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