Abstract
Experimental results are presented on the current commutation in a low-power gas discharge with external plasma injection. Correlation between current commutation and cathode spot ignition is established. It is shown that the cathode spot is ignited synchronously with the filling of the discharge gap with dense plasma and quenched synchronously with the release (gas-dynamic unloading) of the gap from the plasma. It is found that the spot is ignited over 1–30 ns due to the local explosive heating of the cathode surface (at a heating rate of higher than 1012 K/s) by the field emission current. It is also shown that the spot is quenched over a time of less than 100 ps and that the processes leading to the quenching develop simultaneously in all cells of the cathode spot.
Similar content being viewed by others
REFERENCES
G. A. Mesyats, Pulsed Energetics and Electronics (Nauka, Moscow, 2004) [in Russian].
V. I. Asyunin, S. G. Davydov, A. N. Dolgov, T. I. Kozlovskaya, V. O. Revazov, V. P. Seleznev, and R. H. Yakubov, High Temp. 55, 191 (2017).
G. P. Mkheidze and A. A. Savin, Prikl. Fiz., No. 3, 63 (2008).
V. A. Ivanov, A. S. Sakharov, and M. E. Konyzhev, Plasma Phys. Rep. 42, 619 (2016).
I. G. Kesaev, Cathode Processes in Electric Arcs (Nauka, Moscow, 1968) [in Russian].
V. L. Bychkov, K. I. Deshko, and V. A. Chernikov, Usp. Prikl. Fiz., No. 6, p. 111 (2018).
V. M. Astashinsky, A. M. Kuzmitsky, and A. A. Mishchuk, J. Appl. Spectrosc. 78, 404 (2011).
K. Deshko. Scientific Conference “Lomonosov Readings,” Sect. Physics, Moscow, 2017, Book of Abstracts, p. 26.
A. S. Kamrukov, N. P. Kozlov, and U. S. Protasov, Teplofiz. Vys. Temp. 6, 1235 (1978).
V. M. Astashinsky, G. I. Bakanovich, and L. Ya. Minko, Sov. J. Plasma Phys. 10, 609 (1984).
K. I. Deshko and V. A. Chernikov, Vest. Mosk. Univ. 73 (1), 118 (2018).
B. Juttner, J. Phys. D 34, R103 (2001).
M. B. Bochkarev and I. V. Uimanov, in Proceedings of the XX International Symposium on Discharges and Electrical Insulation in Vacuum, Tours, 2002, p. 372.
D. Alpert, D. A. Lee, E. M. Lyman, and H. E. Tomaschke, J. Vac. Sci. Technol. 1, 35 (1964).
N. M. Zykova, A. V. Nedospasov, and V. G. Petrov, Teplofiz. Vys. Temp. 21, 778 (1983).
A. E. Robson and P. C. Thonemann, Proc. Phys. Soc. 73, 508 (1959).
S. A. Barengolts, G. A. Mesyats, and M. M. Tsventoukh, Nucl. Fusion 50, 125004 (2010).
Author information
Authors and Affiliations
Corresponding authors
Additional information
Translated by I. Grishina
Rights and permissions
About this article
Cite this article
Bychkov, V.L., Deshko, K.I. & Chernikov, V.A. Stimulated Ignition and Quenching of the Cathode Spot in a Low-Power Discharge with Plasma Injection. Plasma Phys. Rep. 45, 973–979 (2019). https://doi.org/10.1134/S1063780X19080026
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063780X19080026