Electron density and temperature profile diagnostics for C-2 field reversed configuration plasmas
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Updated: May 17, 2026

Building Langmuir Probes and Emissive Probes for Plasma Potential Measurements in Low Pressure, Low Temperature Plasmas
Published on: May 25, 2021
B H Deng1, J S Kinley, J Schroeder
1Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688, USA. bdeng@trialphaenergy.com
Abstract:
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. Rayleigh scattering revealed a finite line width of the ruby laser emission, which complicates density calibration. Taking advantage of the plasma wobble motion, density profile reconstruction accuracy from the 6-chord two-color CO(2)∕HeNe interferometer data is improved.
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