Long-path second-harmonic interferometer with nanosecond time resolution: reliable diagnostic tool for electron density measurement in pulsed plasma devices

Long-path second-harmonic interferometer with nanosecond time resolution: reliable diagnostic tool for electron density measurement in pulsed plasma devices

September 2012 | T. Del Rosso | Optics Letters | Paper

We describe the performance of a second-harmonic interferometer (SHI) to measure, on an optical path exceeding 12 m, the electron plasma density of two plasmoids formed in separate theta-pinch chambers and then merged in a central compression chamber after undergoing acceleration and compression.

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Measurements of neutral density profiles using a deuterium Balmer-alpha diagnostic in the C-2 FRC plasma

Measurements of neutral density profiles using a deuterium Balmer-alpha diagnostic in the C-2 FRC plasma

August 2012 | D. Gupta | Review of Scientific Instruments | Paper

In C-2 field-reversed configuration (FRC) device, low neutral density outside the FRC separatrix is required to minimize the charge exchange loss of fast particles.

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Electron density and temperature profile diagnostics for C-2 field reversed configuration plasmas

Electron density and temperature profile diagnostics for C-2 field reversed configuration plasmas

August 2012 | B. Deng | Review of Scientific Instruments | Paper

The 9-point Thomson scattering diagnostic system for the C-2 field reversed configuration plasmas is improved and the measured electron temperature profiles are consistent with theoretical expectations.

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