Laser monitor visualization of gas-dynamic processes under pulse-periodic discharges initiated by runaway electrons in atmospheric pressure air

D. V. Beloplotov, M. V. Trigub, V. F. Tarasenko, G. S. Evtushenko, M. I. Lomaev

Результат исследований: Материалы для журналаСтатьярецензирование

3 Цитирования (Scopus)

Аннотация

Gas-dynamic processes that run in pulse-periodic discharges initiated by runaway electrons in atmospheric pressure air are studied with CuBr-laser based laser monitor and schlieren method. Voltage pulses (U = 13 kV, FWHM is 10 ns, front length is 4 ns, negative polarity, f = 60–3200 Hz) applied to a coneshaped copper cathode with cone base diameter, apex angle, and corner radius of cone vertex of 6 mm, 30°, and 0.2 mm, respectively. A flat copper anode was located at a distance of 2 mm from the cathode. It is established that discharge plasma products with copper vapors are carried in a radial direction along the anode surface to a distance of 24 mm for 2.5 ms. The temperature of the gas heated is ~1 × 103 K. It is shown that the use of the laser monitor in transmitted light provides for contrast images of optical inhomogeneities that appear in gas discharges.

Язык оригиналаАнглийский
Страницы (с-по)371-375
Число страниц5
ЖурналAtmospheric and Oceanic Optics
Том29
Номер выпуска4
DOI
СостояниеОпубликовано - 1 июл 2016

ASJC Scopus subject areas

  • Oceanography
  • Atomic and Molecular Physics, and Optics
  • Earth-Surface Processes
  • Atmospheric Science

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