Radiative characteristics of shock-heated oxygenстатья
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Дата последнего поиска статьи во внешних источниках: 11 апреля 2022 г.
Аннотация:The emission spectra of oxygen behind the front of a strong shock wave were studied in the range of shock wave speeds of 5.7–7.4 and 8.1–10.0 km/s at pressures of 1.0 and 0.25 Torr in front of the wave front. Time-integrated sweeps of radiation over a wide spectral range of 200–675 nm and time oscillograms of oxygen radiation were obtained. Analysis of the obtained panoramic spectra shows that at low shock wave speeds the radiation spectrum is dominated by a system of Schumann–Runge molecular bands. Increase of the shock wave speed leads to the appearance of strong atomic lines in the emission spectrum. Features of the time oscillograms for the most typical lines of the spectrum (the radiation of molecular oxygen at a wavelength of 213 nm (Schumann–Runge system) andatomic oxygen at wavelengths of 394 and 645 nm) are identified.