PRIKLADNAYA FIZIKA
(Applied Physics)

The Scientific and Technical Journal


2016, No. 2 Founded in 1994. Moscow


Some results of study of a microwave discharge in liquid heavy hydrocarbons

K. A. Averin, Yu. A. Lebedev, and V. A. Shakhatov

Topchiev Institute of Petrochemical Synthesis of the Russian Academy of Sciences (TIPS RAS)
29 Leninskii prospect, Moscow, 119991, Russia
E-mail: averin@ips.ac.ru; lebedev@ips.ac.ru; shakhatov@ips.ac.ru

Received March 14, 2016

Some results of the study of a microwave discharge in heavy hydrocarbons are presented. Microwave energy is introduced into a liquid hydrocarbon by using a coaxial line. The pressure above the liquid surface is equal to the atmospheric pressure. The system is fed in argon through a channel in the center conductor of the coaxial line, so that the discharge is ignited in the atmosphere of argon and hydrocarbon vapors. Emission spectra of discharge were studied in different liquid hydrocarbons. It was shown that the emission spectra mainly contain different sequences of Swan bands, and possible radiation of other plasma components is on the noise level. Spectra of plasma emission are presented for plasma in liquid n-heptane, nefras ะก2 80/120, and oil C-9, used for the production of chemical fibers. The rotational (gas) and vibrational temperatures are determined by processing of observed spectra.

PACS: 51.50.+v, 52.25.-b, 52.40.Fd, 52.50.Dg, 52.50.Sw, 52.70.Ds

Keywords: microwave plasma, microwave discharge, nonrquilibrium plasma, microwave discharge in liquids, optical emission spectroscopy, discharge in hydrocarbons.

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