The results of electron cyclotron heating (ECH) experiments in the L-2M stellarator are presented. The main goal of the experiments is to investigate the physics of ECH and of plasma confinement at high values of the volume heating power density. A current free plasma is produced and heated by extraordinary waves at the second harmonic of the electron cyclotron frequency ( omega 0=2 omega ce). The experimental results are compared with the empirical LHD scaling and with numerical simulations of plasma confinement and heating processes based on neoclassical theory using the full matrix of transport coefficients, including some additional anomalous corrections
В работе приведены результаты экспериментальных исследований импульсной боронизации, проводимой в плазме омического разряда на стеллараторе Л-2М с применением карборана C 2 B 10 H 12 . Исследованы стойкость полученной бороуглеродной плёнки к распылению под действием потока плазмы омического разряда, динамика параметров плазмы в омическом разряде после нанесе-ния бороуглеродных плёнок. Показано, что импульсная боронизация позволяет наносить более плотное и прочное борокарбидное покрытие на стенки камеры стелларатора по сравнению с боронизацией в тлеющем разряде. При этом уменьшается рециклинг водорода со стенки камеры, а также количество примесей углерода и кислорода в водородной плазме омического разряда и соот-ветствующие радиационные потери. Исследованы также светорассеивающие свойства образцов с бороуглеродными плёнками.Ключевые слова: УТС, токамак, стелларатор, радиационные потери, поступление примесей в плазму, бороуглеродные плёнки, боронизация вакуумной камеры, омический нагрев плазмы. DEPOSITION OF BORON FILMS UNDER OHMIC DISCHARGES IN THE L-2M STELLARATOR USING METACARBORANE.A.I. MESHCHERYAKOV, M.S. BEREZHETSKIJ, V.P. LOGVINENKO, A.A. LETUNOV, O.I. BUZHINSKIJ, A.G. VOLOBOY. The results of experimental pulsed boronization are given in this paper. Boronization was carried out with carborane C 2 B 10 H 12 in plasma produced by ohmic discharges in the L-2M stellarator. We have tested the resistance of the obtained boron-carbon films with respect to their scattering under interaction with plasma of ohmic discharges. The dynamics of plasma parameters in the ohmic discharge after applying boron-carbon films was under study. It was shown that pulsed boronization produces more dense and durable boron-carbon coating on the walls of the stellarator chamber compared to boronization in a glow discharge. This significantly decreases the recycling of hydrogen from chamber walls as well as an amount of carbon and oxygen impurities in plasma of ohmic discharge and corresponding radiation losses. The light-scattering properties of the samples with boron-containing films were studied as well.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.