Determination of the electron concentration and temperature,as well as the reduced electric field strength,in the plasma of a high-voltage nanosecond discharge initiated in atmospheric-pressure nitrogen by a runaway electron beam |
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Authors: | D A Sorokin M I Lomaev T I Banokina V F Tarasenko |
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Institution: | 1. Institute of High-Current Electronics, Siberian Branch, Russian Academy of Sciences, Akademicheskii pr. 4, Tomsk, 634055, Russia 2. National Research Tomsk State University, pr. Lenina 30, Tomsk, 634050, Russia
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Abstract: | We report on the results of spectroscopic measurements of electron concentration N e and temperature T e , as well as the reduced electric field strength E/N in the plasma of a high-voltage nanosecond discharge in the gap with a strongly nonuniform electric field distribution, which is filled with nitrogen under the atmospheric pressure. The possibility of using the method for determining T e and E/N, which is based on the determination of the ratio of the peak intensities of the ionic N 2 + (λ = 391.4 nm) and molecular N2 (λ = 394 nm) nitrogen bands, is proved. We detected the mean values of quantities N e , T e , and E/N amounting to ~2 × 1014 cm?3, ~2 eV, and ~240 Td, respectively. In addition, the dynamics of these quantities is determined. |
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