Two-chord interferometry using 3.39 μm He–Ne laser on a flux-coil-generated FRCa). Gota, H., Bolte, N., Deng, B. H., Gupta, D., Kiyashko, V., Knapp, K., Mendoza, R., Morehouse, M., Roche, T., & Wessel, F. Review of Scientific Instruments, 81(10):10D512, October, 2010. 00000![Two-chord interferometry using 3.39 μm He–Ne laser on a flux-coil-generated FRCa) [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex A two-chord λ IR ∼ 3.39 μ m He–Ne laser interferometer system was developed for a flux-coil-generated field-reversed configuration to estimate the electron density and the total temperature of the field-reversed configuration (FRC) plasma. This two-chord heterodyneinterferometer system consists of a single ∼ 2 mW infrared He–Ne laser, a visible ( λ vis ∼ 632.8 nm ) He–Ne laser for the alignment, a 40 MHz acousto-optic modulator, photodetectors, and quadrature phase detectors. Initial measurement was performed and the measured average electron densities were 2 – 10 × 10 19 m − 3 at two different radial positions in the midplane. A time shift in density was observed as the FRC expands radially. The time evolution of the line-averaged density agrees with the density estimated from the in situ internal magnetic probes, based on a rigid-rotor profile model.
@article{gota_two-chord_2010,
title = {Two-chord interferometry using 3.39 μm {He}–{Ne} laser on a flux-coil-generated {FRCa})},
volume = {81},
issn = {0034-6748, 1089-7623},
url = {http://scitation.aip.org/content/aip/journal/rsi/81/10/10.1063/1.3475538},
doi = {10.1063/1.3475538},
abstract = {A two-chord λ IR ∼ 3.39 μ m He–Ne laser interferometer system was developed for a flux-coil-generated field-reversed configuration to estimate the electron density and the total temperature of the field-reversed configuration (FRC) plasma. This two-chord heterodyneinterferometer system consists of a single ∼ 2 mW infrared He–Ne laser, a visible ( λ vis ∼ 632.8 nm ) He–Ne laser for the alignment, a 40 MHz acousto-optic modulator, photodetectors, and quadrature phase detectors. Initial measurement was performed and the measured average electron densities were 2 – 10 × 10 19 m − 3 at two different radial positions in the midplane. A time shift in density was observed as the FRC expands radially. The time evolution of the line-averaged density agrees with the density estimated from the in situ internal magnetic probes, based on a rigid-rotor profile model.},
number = {10},
urldate = {2014-05-28TZ},
journal = {Review of Scientific Instruments},
author = {Gota, H. and Bolte, N. and Deng, B. H. and Gupta, D. and Kiyashko, V. and Knapp, K. and Mendoza, R. and Morehouse, M. and Roche, T. and Wessel, F.},
month = oct,
year = {2010},
note = {00000},
keywords = {Laser beams, interferometers, interferometry, magnetic fields, plasma temperature},
pages = {10D512}
}
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