This article is cited in 3 papers

Optical electron-beam diagnostics of free supersonic jet of nitrogen activated by electron-beam-generated plasma

R. G. Sharafutdinov, E. A. Baranov, S. Ya. Khmel'

S.S. Kutateladze Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences

Abstract: Electron-beam-induced optical emission spectroscopy has been used for the first time to measure the rotational temperature and number density of gas in a free supersonic neutral nitrogen jet and in that activated by electron-beam plasma. The electron-beam plasma was generated by a low-energy electron beam at a distance of 10 mm downstream from the edge of a conical supersonic nozzle. For diagnostics of the activated jet, the spectrum of intrinsic optical emission of plasma was subtracted from the spectrum of emission induced by the probing electron beam in the activated jet. It was established that the rotational temperature in the activated jet is increased as compared to that in the neutral jet, while the density at the jet axis is decreased. The electron-beam activation of nitrogen in the jet leads to a 35

Received: 30.06.2011

 English version: Technical Physics Letters, 2011, 37:12, 1172–1175

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