2012•Instruments and Experimental TechniquesRequires access
An infrared interferometer for investigating subthermonuclear plasma in the GOL-3 multimirror trap
Vladimir S. Burmasov, V.B. Bobylev, Alina A. Ivanova, S. V. Ivanenko, A. A. Kasatov, Dmitrii A. Kasatov, Edward P. Kruglyakov, Konstantin N. Kuklin, Сергей Сергеевич Попов, Vladimir V. Postupaev, E. A. Puryga, A. F. Rovenskikh, Vladislav F. Sklyarov
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Abstract
A simple Michelson CO2 interferometer for measuring the high-temperature plasma density within one interference fringe (n e l = 1016 cm−2) at two points (0.8 and 9.0 m) of the long (L = 12 m) GOL-3 corrugated trap was used. A piezoelectric element that provides displacements of the mirror in the reference arm of the interferometer is used to calibrate the interferometer and perform remote control of the initial measurement phase. The interferometer is manufactured from dielectric materials, thus excluding a mechanical action of stray magnetic fields on its elements. The time resolution of the interferometer is determined by a HgCdTe diode and equals ∼1 ns. The sensitivity of the interferometer is ∼5 × 10−4 of a fringe (n e l = 2 × 1013 cm−2).