Engineering Physics Annotation << Back OPTICAL-SPECTROMETRIC COMPLEX FOR PLASMA PARAMETERS DIAGNOSTICS DURING THE ELECTRIC EXPLOSION OF TUNGSTEN WIRES IN VACUUM L.I. URUTSKOEV, K.A. ALABIN, R.M. ARSHBA, D.A. VOYTENKO, M.K. KOKOEV, B.A. LAZBA, N.D. PILIA, G.V. SARETSYAN, N.Z. CHIKOVANI An optical-spectrometric diagnostic complex is described that allows to measure the speed of radial expansion of the plasma front formed by electric explosion of a tungsten wire in vacuum and at the same time, using a three-frame high-speed (with exposure of τ ~ 30 ns) electron-optical system, to visualize the process, allowing to judge the uniformity of plasma expansion. The use of a narrow-band interference filter made it possible to obtain IIT images in the rays of the Hα hydrogen line. The spectral part of the complex made it possible to record the time-integrated panoramic optical spectra of the plasma emission, which, during electric explosion of tungsten wires, contain both continuous and line components. Analysis of the continuous part of the spectrum allows to judge the temperature of the tungsten wire. The combination of the spectrometer with the streak camera made it possible to record the temporal dynamics of spectral lines and continuous spectrum. Using STE-1 spectrometer, it was possible to reliably measure the ratio of the intensities of the Hα and Hβ spectral lines and the magnitude of their broadening, which made it possible to determine the electron temperature and plasma density averaged over the duration of an electric explosion. Thus, the complex of diagnostics described in the article made it possible to control the physical parameters of electric explosion, as well as to judge the plasma density and electron temperature. Keywords: electric explosion, electric explosion of metal conductors, optical spectrometry, pyrometry, spectral line broadening, plasma, streak camera, hydrogen spectral lines. DOI: 10.25791/infizik.03.2020.1122 Pp. 03-18.