We studied the glow of the plasma of a pulse discharge ignited in nitrogen by high-power focused radiation of a terahertz-wave gyrotron (a radiation frequency of 0.67 GHz, a pulse duration of 20 μs, and a power of 40 kW). The pressure in the discharge chamber varied in the range 0.1–350 Torr. It was found that at high pressures (more than 50 Torr), long-term (about 1.0–1.5 ms), a non-monotonic afterglow exists after the end of the terahertz pulse, whose intensity can exceed the plasma glow intensity significantly (by several times) during the action of the terahertz radiation pulse on the plasma. At pressures below 50 Torr, the afterglow duration proves to be significantly shorter, specifically, about several tens of microseconds. The observed long-term afterglow is radiation in certain vibrational bands of the second positive system of N2 and is due, evidently, to the processes of associative excitation of electron levels in nitrogen molecules with the participation of long-living metastables \( {\mathrm{N}}_2\left({\mathrm{A}}^3{\varSigma}_{\mathrm{u}}^{+}\right) \).
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References
V. Bratman, M. Glyavin, T. Idehara, et al., IEEE Trans. Plasma Sci., 37, No. 1, 36 (2009).
V. L. Bratman, M. Yu. Glyavin, Yu. K. Kalynov, et al., Int. J. IRMM & THz Waves, 32, 371 (2011).
M. Yu. Glyavin, A. G. Luchinin, G. S. Nusinovich, et al., Appl. Phys. Lett., 101, 153503 (2012).
V. L. Bratman, V. G. Zorin, Yu. K. Kalynov, et al., Phys. Plasmas, 18, 083507 (2011).
M. Yu. Glyavin, S. V. Golubev, V. G. Zorin, et al., Radiophys. Quantum Electron., 56, Nos. 8–9, 561 (2013).
V. L. Bratman, I. V. Izotov, Yu. K. Kalynov, et al., Phys. Plasmas, 20, 123512 (2013).
M. Yu. Glyavin, S. V. Golubev, I. V. Izotov, et al., Appl. Phys. Lett., 105, 74101 (2014).
S. V. Razin, A. V. Sidorov, S. V. Golubev, et al., Proc. 9-th Int. Workshop “Strong Microwaves and Terahertz Waves: Sources and Applications”, July 24–30, 2014, Nizhny Novgorod—Perm—Nizhny Novgorod, Russia, p. 89.
D. I. Slovetsky, Mechanisms of Chemical Reactions in Non-Equilibrium Plasmas [in Russian], Nauka, Moscow (1980).
N. A. Bogatov, M. S. Gitlin, S. V. Golubev, and S. V. Razin, Abstr. 9th European Sectional Conf. Atomic and Molecular Physics Ionized Gases (ESCAMPIG), August 30–September 2, 1988, Lisbon, Portugal, 12H, p. 79.
N. A. Bogatov, S. V. Golubev, and I. Kutuzov, Abstr. 9th European Sectional Conf. Atomic and Molecular Phys. Ionized Gases (ESCAMPIG), August 30–September 2, 1988, Lisbon, Portugal, 12H, p. 77.
J. Henriques, E. Tatarova, F. M. Dias, and C. M. Ferreira, J. Appl. Phys., 103, Art. no. 103304 (2008).
N. A. Popov, Plasma Phys. Rep., 35, No. 5, 436 (2009).
Yu. A. Lebedev and V. A. Shakhatov, Plasma Phys. Rep., 32, No. 1, 56 (2006).
L. L. Alves, L. Marques, C. D. Pintassilgo, et al., Plasma Sources Sci. Techn., 21, 045008 (2012).
J. Pan, Z. Tan, X. Wang, et al., IEEE Trans. Plasma Sci., 43, No. 2, 557 (2015).
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 60, No. 2, pp. 150–157, February 2017.
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Vodopyanov, A.V., Glyavin, M.Y., Luchinin, A.G. et al. Glow of the Plasma of a Pulse Discharge Produced in Nitrogen by High-Power Terahertz-Wave Radiation. Radiophys Quantum El 60, 136–142 (2017). https://doi.org/10.1007/s11141-017-9784-0
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DOI: https://doi.org/10.1007/s11141-017-9784-0