Nacional'nyy issledovatel'skiy Tomskiy gosudarstvennyy universitet
UDC 537.523.9
CSCSTI 29.33
Russian Classification of Professions by Education 03.03.02
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 6135
BISAC TEC019000 Lasers & Photonics
The results of the study of optical radiation of a plasma jet generated due to injection of atmospheric pressure glow discharge plasma with a working gas flow into a region of reduced pressure of 0.5 – 133 Pa (≈ 3∙10-3 – 1 Torr) are presented. To generate plasma under such conditions, a two-electrode discharge system was used based on a glow discharge at atmospheric pressure in an argon flow, where the anode was a diaphragm with an opening with a diameter of 200-300 µm. In this way, a pressure difference was ensured between the discharge system of the plasma generator and the vacuum chamber into which the plasma jet was injected. It is shown that in the specified pressure range the excitation temperature of electrons is about 0.6 eV (≈ 6900 K). The prospects for using such a plasma generator as an effective addition to existing systems using powerful microwave and terahertz radiation for plasma generation are considered.
glow discharge, atmospheric pressure, plasma jet, forevacuum, plasma injection
1. Rayzer Yu.P. Lazernaya iskra i rasprostranenie razryadov. – M.: Nauka, 1974. - 308 s.
2. Kubarev V.V., Gorbachev Ya.I., Shevchenko O.A., Vodopyanov A.V., Sidorov A.V. and Veselov A.P. Point-like plasma-limited high-temperature terahertz laser discharge // Plasma Sources Science and Technology. 2023. V. 32, iss. 5. Art. no. 055004. DOIhttps://doi.org/10.1088/1361-6595/accca9.
3. Shibkov V.M., Dvinin S.A., Ershov A.P., Shibkova L.V. Mehanizmy rasprostraneniya poverhnostnogo sverhvysokochastotnogo razryada // Zhurnal tehnicheskoy fiziki. 2005. T. 75, № 4. S. 74.
4. Rayzer Yu.P. Nagrevanie gaza pod deystviem moschnogo svetovogo impul'sa // Zhurnal eksperimental'noy i teoreticheskoy fiziki. 1965. T. 48. S. 1508.
5. Sidorov A.V., Veselov A.P., Rakova E.I., Barmashova T.V., Vodopyanov A.V., Ananichev A.A., Glyavin M.Yu. Ionization wave in air under the action of powerful radiation of the terahertz frequency range // St. Petersburg State Polytechnical University Journal. Physics and Mathematics. 2023. V. 16, iss. 1.2. P. 544–549. DOI:https://doi.org/10.18721/JPM.161.283.
6. Bunkin F.V., Konov V.I., Prohorov A.M., Fedorov V.B. Lazernaya iskra v rezhime "medlennogo goreniya" // Pis'ma v Zhurnal eksperimental'noy i teoreticheskoy fiziki. 1969. T. 9, № 11. S. 609.
7. Generator ekstremal'nogo ul'trafioletovogo izlucheniya na osnove razryada, podderzhivaemogo vysokim postoyannym napryazheniem v rezkoneodnorodnom potoke gaza: Patent № 2835671 C1 Rossiyskaya Federaciya, MPK H05G 2/00.: / A.P. Veselov, A.V. Sidorov, A.V. Vodop'yanov, E.I. Preobrazhenskiy; zayavitel' Federal'noe gosudarstvennoe byudzhetnoe nauchnoe uchrezhdenie "Federal'nyy issledovatel'skiy centr Institut prikladnoy fiziki im. A.V. Gaponova-Grehova Rossiyskoy akademii nauk; zayavl. 17.10.2024; opubl. 03.03.2025.
8. Savkin K.P., Oks E.M., Sorokin D.A., Yushkov G.Yu., Yushkov A.Yu, Sintsov S.V., Vodopyanov A.V. Positive column dynamics of a low-current atmospheric pressure discharge in flowing argon // Plasma Sources Science and Technology. 2022. V. 31, iss. 1. Art. no. 015009. DOI:https://doi.org/10.1088/1361-6595/ac309a.
9. Sarani A., Nikiforov A.Yu., Leys C. Atmospheric pressure plasma jet in Ar and Ar/H2O mixtures: Optical emission spectroscopy and temperature measurements. Physics of Plasmas. 2010. V. 17. Art. no. 063504. DOI:https://doi.org/10.1063/1.3439685.
