Mach cones in a coulomb lattice and a dusty plasma

D. Samsonov; J. Goree; Z. W. Ma; A. Bhattacharjee; H. M. Thomas; G. E. Morfill

doi:10.1103/PhysRevLett.83.3649

Mach cones in a coulomb lattice and a dusty plasma

D. Samsonov, J. Goree, Z. W. Ma, A. Bhattacharjee, H. M. Thomas, G. E. Morfill

Research output: Contribution to journal › Article › peer-review

231 Scopus citations

Abstract

Mach cones, or V-shaped disturbances created by supersonic objects, have been detected in a two-dimensional Coulomb crystal. Electrically charged microspheres levitated in a glow-discharge plasma formed a dusty plasma, with particles arranged in a hexagonal lattice in a horizontal plane. Beneath this lattice plane, a sphere moved faster than the lattice sound speed. Mach cones were double, first compressive then rarefactive, due to the strongly coupled crystalline state. Molecular dynamics simulations using a Yukawa potential also show multiple Mach cones.

Original language	English (US)
Pages (from-to)	3649-3652
Number of pages	4
Journal	Physical review letters
Volume	83
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.83.3649
State	Published - Jan 1 1999
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.83.3649

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AU - Goree, J.

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AU - Bhattacharjee, A.

AU - Thomas, H. M.

AU - Morfill, G. E.

PY - 1999/1/1

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N2 - Mach cones, or V-shaped disturbances created by supersonic objects, have been detected in a two-dimensional Coulomb crystal. Electrically charged microspheres levitated in a glow-discharge plasma formed a dusty plasma, with particles arranged in a hexagonal lattice in a horizontal plane. Beneath this lattice plane, a sphere moved faster than the lattice sound speed. Mach cones were double, first compressive then rarefactive, due to the strongly coupled crystalline state. Molecular dynamics simulations using a Yukawa potential also show multiple Mach cones.

AB - Mach cones, or V-shaped disturbances created by supersonic objects, have been detected in a two-dimensional Coulomb crystal. Electrically charged microspheres levitated in a glow-discharge plasma formed a dusty plasma, with particles arranged in a hexagonal lattice in a horizontal plane. Beneath this lattice plane, a sphere moved faster than the lattice sound speed. Mach cones were double, first compressive then rarefactive, due to the strongly coupled crystalline state. Molecular dynamics simulations using a Yukawa potential also show multiple Mach cones.

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JF - Physical review letters

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Mach cones in a coulomb lattice and a dusty plasma

Abstract

All Science Journal Classification (ASJC) codes

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