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Thomson scattering diagnostic for a low-density, high-temperature, steady-state plasma

J. A. Cobble, L. Bighel

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Abstract

A ruby-laser, Thomson scattering diagnostic for electron temperature (Te) and density (ne) measurements has operated on EBT-S. This is significant because the density is of order or less than 1012 cm−3, because the temperature is a few hundred electron volts, and because this rather harsh environment in which measurements are taken persists for hours at a time. The problems presented by this steady-state plasma have been successfully addressed, and radial scans of Te and ne have been obtained.

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What this paper is about

A ruby-laser, Thomson scattering diagnostic for electron temperature (Te) and density (ne) measurements has operated on EBT-S. This is significant because the density is of order or less than 1012 cm−3, because the temperature is a few hundred electron volts, and because this rather harsh environment in which measurements are taken persists for hours at a time. The problems presented by this steady-state plasma have been successfully addressed, and radial scans of Te and ne have been obtained.

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Available abstract

A ruby-laser, Thomson scattering diagnostic for electron temperature (Te) and density (ne) measurements has operated on EBT-S. This is significant because the density is of order or less than 1012 cm−3, because the temperature is a few hundred electron volts, and because this rather harsh environment in which measurements are taken persists for hours at a time. The problems presented by this steady-state plasma have been successfully addressed, and radial scans of Te and ne have been obtained.

Key concepts: Thomson scattering, Electron temperature, Plasma, Electron density, Atomic physics, Plasma diagnostics, Materials science, Scattering

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