We developed an algorithm for processing of the dynamic spectra of plasma emission, which makes it possible to extract chirped elements with both increasing and decreasing frequencies. The algorithm was tested on a set of experimental data obtained by studying the emission spectra of the rarefied plasma of an electron cyclotron resonant discharge in an open magnetic trap. The efficiency of the method is close to 100% for signals with a signal-to-noise ratio of more than 30 dB and about 50% with a signal-to-noise ratio of 20 dB. This method can be used for automated analysis of dynamic emission spectra of both laboratory and space plasmas.
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References
V. Y. Trakhtengerts, J. Geophys. Res.: Space Phys., 100, No. A9, 17205 (1995).
V. Y. Trakhtengerts, Ann. Geophys., 17, No. 1, 95 (1999).
W. Li, R. M. Thorne, J. Bortnik, Y. Y. Shprits, et al., Geophys. Res. Lett., 38, No. 14, L14103 (2011).
V. Yu. Trakhtengerts and M. J. Rycroft, Whistler and Alfven Mode Cyclotron Masers in Space, Cambridge University Press, New York (2008).
E. Macúšová, O. Santolík, P. Décréau, et al., J. Geophys. Res.: Space Phys., 115, No. A12, A12257 (2010).
E. Titova, A. Demekhov, B. Kozelov, et al., J. Geophys. Res.: Space Phys., 117, No. A8, A08210 (2012).
B. N. Breizman and S. E. Sharapov, Plasma Phys. Control. Fusion, 53, No. 5, 054001 (2011).
S. E. Sharapov, B. Alper, H. L. Berk, et al., Nucl. Fusion, 53, No. 10, 104022 (2013).
H. L. Berk, B. N. Breizman, and N. V. Petviashvili, Phys. Lett. A, 234, No. 3, 213 (1997).
M. E. Viktorov, A. G. Shalashov, D. A. Mansfeld, and S. V. Golubev, Europhys. Lett., 116, No. 10, 55001 (2016).
A. G. Shalashov, E. D. Gospodchikov, and M. E. Viktorov, Plasma Phys. Control. Fusion, 61, No. 8, 085020 (2019).
O. Santolík, E. Macúšová, E. Titova, et al., Ann. Geophys., 26, No. 6, 1665 (2008).
A. V. Larchenko, A. G. Demekhov, and B. V. Kozelov, in: Trudy Kolskogo Nauch. Tsentra RAN, Ser. Geliogeofizika [in Russian] (2017), No. 3, p. 47.
A. V. Larchenko, A. G. Demekhov, and B. V. Kozelov, Izv. Vyssh. Uchebn. Zaved., Radiofiz., 61, No. 3, 177 (2019).
A. G. Shalashov, M. E. Viktorov, D. A. Mansfeld, and S. V. Golubev, Phys. Plasmas, 24, No. 3, 032111 (2017).
A. V. Vodopianov, S. V. Golubev, A. E. Demekhov, et al., Plasma Phys. Rep., 31, 927 (2005).
M. E. Viktorov, A. G. Shalashov, E. D. Gospodchikov, et al., in: Proc. of 45th European Physical Society Conf. Plasma Physics, Prague, 2–6 July 2018, Vol. 42A, 101.
T. H. Cormen, C. E. Leiserson, R. L. Rivest, and C. Stein, Introduction to Algorithms, MIT Press and McGraw-Hill, London (2009).
A. G. Demekhov, Radiophys. Quantum Electron., 59, No. 10, 773 (2016).
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 62, No. 4, pp. 319–326, April 2019.
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Viktorov, M.E., Ilichev, S.D. Method for Studying the Dynamics of Fast Frequency Sweeping Events in the Spectra of Non-Thermal Electromagnetic Plasma Emission. Radiophys Quantum El 62, 286–292 (2019). https://doi.org/10.1007/s11141-019-09977-8
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DOI: https://doi.org/10.1007/s11141-019-09977-8