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Features of the Application of the Magnetic-probe Method for Diagnostics of High-temperature Plasma

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Abstract

Some aspects of the applicability of the magnetic-probe technique in high-power pulsed discharges are analyzed. The influence of an electron beam and an intense X-ray yield of (~1 TW/cm2), which result from the compression of high-current plasma in the interelectrode gap of a Z-pinch discharge, on the correctness of measurements using magnetic-field probes was studied. We considered the use of multilayer shells as a method for protecting the sensing element of a magnetic probe. The results of experimental testing of probes of a new design in experiments with wire assemblies on the Angara-5-1 facility at discharge currents of up to 4 MA are presented. Experiments on the Angara-5-1, PF-3, and PF-1000 high-power electrophysical facilities show the effect of the shape and material of the probe shell on the perturbation of plasma that flows around a probe and, as a consequence, on the accuracy of the magnetic-field measurements.

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Correspondence to K. N. Mitrofanov.

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Original Russian Text © K.N. Mitrofanov, V.I. Krauz, E.V. Grabovski, V.V. Myalton, M. Paduch, A.N. Gritsuk, 2018, published in Pribory i Tekhnika Eksperimenta, 2018, No. 2, pp. 78–99.

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Mitrofanov, K.N., Krauz, V.I., Grabovski, E.V. et al. Features of the Application of the Magnetic-probe Method for Diagnostics of High-temperature Plasma. Instrum Exp Tech 61, 239–259 (2018). https://doi.org/10.1134/S0020441218010281

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  • DOI: https://doi.org/10.1134/S0020441218010281

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