Experimental verification of the dielectric constant of a magnetized rotating plasma

C. Teodorescu; R. F. Ellis; A. Case; C. Cothran; A. Hassam; R. Lunsford; S. Messer

doi:10.1063/1.1924391

Experimental verification of the dielectric constant of a magnetized rotating plasma

C. Teodorescu
, R. F. Ellis
, A. Case
, C. Cothran
, A. Hassam
, R. Lunsford
, S. Messer

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

Abstract

Direct measurements confirm that the magnetized plasma perpendicular dielectric constant has a linear dependence on the plasma density for fixed magnetic field, as predicted by magnetohydrodynamic (MHD) theory. In experiments performed on the Maryland Centrifugal Experiment (MCX) [R. F. Ellis, A. B. Hassam, S. Messer, and B. R. Osborn, Phys. Plasmas, 8, 2057 (2001)], line-averaged hydrogen plasma electron density is measured using a Mach-Zehnder interferometer. For small rotational Alfven Mach numbers, the measured size of the perpendicular plasma dielectric constant is also in agreement with MHD theory. Plasma density in the range of (1-8) × 1020 m-3 and relative perpendicular plasma dielectric constant of the order of 106 are measured.

Original language	American English
Article number	062106
Pages (from-to)	1-6
Number of pages	6
Journal	Physics of Plasmas
Volume	12
Issue number	6
DOIs	https://doi.org/10.1063/1.1924391
State	Published - 2005
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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10.1063/1.1924391

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abstract = "Direct measurements confirm that the magnetized plasma perpendicular dielectric constant has a linear dependence on the plasma density for fixed magnetic field, as predicted by magnetohydrodynamic (MHD) theory. In experiments performed on the Maryland Centrifugal Experiment (MCX) [R. F. Ellis, A. B. Hassam, S. Messer, and B. R. Osborn, Phys. Plasmas, 8, 2057 (2001)], line-averaged hydrogen plasma electron density is measured using a Mach-Zehnder interferometer. For small rotational Alfven Mach numbers, the measured size of the perpendicular plasma dielectric constant is also in agreement with MHD theory. Plasma density in the range of (1-8) × 1020 m-3 and relative perpendicular plasma dielectric constant of the order of 106 are measured.",

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T1 - Experimental verification of the dielectric constant of a magnetized rotating plasma

AU - Teodorescu, C.

AU - Ellis, R. F.

AU - Case, A.

AU - Cothran, C.

AU - Hassam, A.

AU - Lunsford, R.

AU - Messer, S.

PY - 2005

Y1 - 2005

N2 - Direct measurements confirm that the magnetized plasma perpendicular dielectric constant has a linear dependence on the plasma density for fixed magnetic field, as predicted by magnetohydrodynamic (MHD) theory. In experiments performed on the Maryland Centrifugal Experiment (MCX) [R. F. Ellis, A. B. Hassam, S. Messer, and B. R. Osborn, Phys. Plasmas, 8, 2057 (2001)], line-averaged hydrogen plasma electron density is measured using a Mach-Zehnder interferometer. For small rotational Alfven Mach numbers, the measured size of the perpendicular plasma dielectric constant is also in agreement with MHD theory. Plasma density in the range of (1-8) × 1020 m-3 and relative perpendicular plasma dielectric constant of the order of 106 are measured.

AB - Direct measurements confirm that the magnetized plasma perpendicular dielectric constant has a linear dependence on the plasma density for fixed magnetic field, as predicted by magnetohydrodynamic (MHD) theory. In experiments performed on the Maryland Centrifugal Experiment (MCX) [R. F. Ellis, A. B. Hassam, S. Messer, and B. R. Osborn, Phys. Plasmas, 8, 2057 (2001)], line-averaged hydrogen plasma electron density is measured using a Mach-Zehnder interferometer. For small rotational Alfven Mach numbers, the measured size of the perpendicular plasma dielectric constant is also in agreement with MHD theory. Plasma density in the range of (1-8) × 1020 m-3 and relative perpendicular plasma dielectric constant of the order of 106 are measured.

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Experimental verification of the dielectric constant of a magnetized rotating plasma

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