Низкочастотные колебания плазмы, инжектированной в открытую магнитную ловушку из независимого сверхвысокочастотного источника

Сулхан [Sulkhan] Ираклиевич [I.] Нанобашвили [Nanobashvili]; Зураб [Zurab] Романович [R.] Берия [Beria]; Гела [Gela] Владимирович [V.] Гелашвили [Gelashvili]; Гиорги [Giorgi] Евтихиевич [E.] Гогиашвили [Gogiashvili]; Иракли [Irakli] Сулханович [S.] Нанобашвили [Nanobashvili]; Гиорги [Giorgi] Платонович [P.] Тавхелидзе [Tavkhelidze]; Гвидо [Gvido] Ван Оост [Van Oost]

doi:10.24160/1993-6982-2022-2-21-26

Сулхан [Sulkhan] Ираклиевич [I.] Нанобашвили [Nanobashvili]
Зураб [Zurab] Романович [R.] Берия [Beria]
Гела [Gela] Владимирович [V.] Гелашвили [Gelashvili]
Гиорги [Giorgi] Евтихиевич [E.] Гогиашвили [Gogiashvili]
Иракли [Irakli] Сулханович [S.] Нанобашвили [Nanobashvili]
Гиорги [Giorgi] Платонович [P.] Тавхелидзе [Tavkhelidze]
Гвидо [Gvido] Ван Оост [Van Oost]

DOI: https://doi.org/10.24160/1993-6982-2022-2-21-26

Keywords: plasma source, low frequency oscillations, ultrahigh frequency waves, ion sound waves, ion cyclotron waves, magnetic trap

Abstract

Methods of plasma heating by electromagnetic waves, interaction of electromagnetic waves with magnetoactive plasma, plasma turbulence, and transport processes were investigated in an OMT-2 linear plasma device magnetic trap. An ultrahigh frequency (UHF) contactless method is used to fill the open magnetic trap with plasma. A new method to fill the open magnetic trap with plasma is proposed, according to which plasma is injected into the trap along the magnetic field from an independent stationary UHF source. The source is located outside the trap, and plasma is produced in it in a strongly nonuniform magnetic field under electron cyclotron resonance (ECR) conditions by means of UHF power. The results from studying how efficiently the open magnetic trap is filled with plasma and what low frequency (LF) plasma oscillations take place in the trap are presented.

The experiments have shown that at pressure p < 1 mTorr, magnetic field in the trap H_t > 400 Oe, and distance between the plasma source and solenoid ℓ < 80 cm, the trap is filled very efficiently, and that plasma with controllable density and temperature 2–3 eV is accumulated in it. It has been found that the first and second harmonic components of an ion sound wave together with ion cyclotron oscillations are reliably detected near the UHF plasma source and also in the trap.

Information about authors

Сулхан [Sulkhan] Ираклиевич [I.] Нанобашвили [Nanobashvili]

Dr.Sci. (Phys-Math.), Main Researcher, Head of Plasma Physics Dept. of E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Georgia, e-mail: sulkhan.nanobashvili@yahoo.com

Зураб [Zurab] Романович [R.] Берия [Beria]

Ph.D. (Phys-Math.), Researcher of Plasma Physics Dept. of E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Georgia, e-mail: zurabberia@gmail.com

Гела [Gela] Владимирович [V.] Гелашвили [Gelashvili]

Ph.D. (Phys-Math.), Main Researcher of Plasma Physics Dept. of E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Georgia, e-mail: gela.gelashvili@tsu.ge

Гиорги [Giorgi] Евтихиевич [E.] Гогиашвили [Gogiashvili]

Ph.D. (Phys-Math.), Senior Researcher of Plasma Physics Dept. of E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Georgia, e-mail: gogi.gogiashvili@gmail.com

Иракли [Irakli] Сулханович [S.] Нанобашвили [Nanobashvili]

Ph.D. (Phys-Math.), Senior Researcher of Plasma Physics Dept. of E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Georgia, e-mail: inanob@yahoo.com

Гиорги [Giorgi] Платонович [P.] Тавхелидзе [Tavkhelidze]

Senior Engineer of Plasma Physics Dept. of E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Georgia, e-mail: gtavkhelidze@yahoo.com

Гвидо [Gvido] Ван Оост [Van Oost]

Ph.D. (Appl. Sci.), Professor of Applied Physics Dept., Ghent University, Belgium, e-mail: guido.vanoost@ugent.be

References

1. Anisimov A.I. e. a. Study of UHF Plasma Heating in Magnetic Field // Plasma Phys. Contr. Nucl. Fus. Res. 1969. Pt. II. P. 399.

2. Zalesskii I.G. e. a. Plasma Production in an Electrostatically Plugged Mirror System by Microwave Method // J. Plasma Phys. 1979. V. 5. P. 532.

3. Nanobashvili S.I., Datlov J., Stockel J., Zacek F. Plasma Formation and Sustainement by a Multijunction Grill on the CASTOR Tokamak // Czech. J. Phys. 1987. V. B37. Pp. 194—200.

4. Gogiashvili G.E., Nanobashvili S.I., Rostomashvili G.I. Stationary UHF Plasma Source // Sov. J. Tech. Phys. 1987. V. 57. P. 1746.

5. Golant V.E. Diffusion of Charged Particles in a Plasma in a Magnetic Field // UFN. 1963. V. 79(6). Pp. 377—440.

6. Silin V.P., Rukhadze A.A. Electromagnetic Properties of Plasma and Plasmalike Media. Moscow: Librokom, 2013.

7. Ginzburg V.L., Rukhadze A.A. Waves in Magnetoactive Plasma. Moscow: Nauka, 1975.

8. Akhiezer A.I., Akhiezer I.A., Polovin P.B., Sitenko A.G., Stepanov K.N. Collective Oscillation in Plasma. Moscow: Atomizdat, 1964.

9. Alexandrov A.F, Bogdankevich L.S., Rukhadze A.A. Principles of Plasma Electrodynamics. N.-Y.: Springer, 1984.

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Для цитирования: Нанобашвили C.И., Берия З.Р., Гелашвили Г.В., Гогиашвили Г.Е., Нанобашвили И.С., Тавхелидзе Г.П., Ван Оост Г. Низкочастотные колебания плазмы инжектированной в открытую магнитную ловушку из независимого сверхвысокочастотного источника // Вестник МЭИ. 2022. № 2. С. 21—26. (in English). DOI: 10.24160/1993-6982-2022-2-21-26.

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1. Anisimov A.I. e. a. Study of UHF Plasma Heating in Magnetic Field. Plasma Phys. Contr. Nucl. Fus. Res. 1969; II: 399.

2. Zalesskii I.G. e. a. Plasma Production in an Electrostatically Plugged Mirror System by Microwave Method. J. Plasma Phys. 1979; 5:532.

3. Nanobashvili S.I., Datlov J., Stockel J., Zacek F. Plasma Formation and Sustainement by a Multijunction Grill on the CASTOR Tokamak. Czech. J. Phys. 1987;B37:194—200.

4. Gogiashvili G.E., Nanobashvili S.I., Rostomashvili G.I. Stationary UHF Plasma Source. Sov. J. Tech. Phys. 1987;57:1746.

5. Golant V.E. Diffusion of Charged Particles in a Plasma in a Magnetic Field. UFN. 1963;79(6):377—440.

6. Silin V.P., Rukhadze A.A. Electromagnetic Properties of Plasma and Plasmalike Media. Moscow: Librokom, 2013.

7. Ginzburg V.L., Rukhadze A.A. Waves in Magnetoactive Plasma. Moscow: Nauka, 1975.

8. Akhiezer A.I., Akhiezer I.A., Polovin P.B., Sitenko A.G., Stepanov K.N. Collective Oscillation in Plasma. Moscow: Atomizdat, 1964.

9. Alexandrov A.F, Bogdankevich L.S., Rukhadze A.A. Principles of Plasma Electrodynamics. N.-Y.: Springer, 1984.

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For citation: Nanobashvili S.I., Beria Z.R., Gelashvili G.V., Gogiashvili G.E., Nanobashvili I.S., Tavkhelidze G.P., Van Oost G. Low Frequency Oscillations of Plasma Injected into an Open Magnetic Trap from an Independent Ultrahigh Frequency Source. Bulletin of MPEI. 2022;2:21—26. DOI: 10.24160/1993-6982-2022-2-21-26.