Abstract—
An attempt to detect the soft X-ray pit (SXR-pit) phenomenon at the L-2M stellarator has been made in different plasma heating regimes using direct spectral measurements. The abnormally strong absorption of soft X-ray plasma radiation in its passing through beryllium foils with thicknesses of 90 μm or more is called the SXR-pit phenomenon; it has been observed at the T-11M tokamak and a number of other tokamaks. A scanning spectrometer and multichord diagnostics of soft X-rays were used in the experiment. It is shown that the SXR-pit phenomenon was not observed at the L-2M stellarator with the plasma parameters similar to those at the T-11M tokamak either in the ohmic heating regime or in the regime of electron-cyclotron-resonance plasma heating.
Similar content being viewed by others
REFERENCES
Mirnov, S.V., Plasma Phys. Controlled Fusion, 2021, vol. 63, p. 045017. https://doi.org/10.1088/1361-6587/abe21e
Callen, J.D., Phys. Rev. Lett., 1977, vol. 39, p. 1540.
Stix, T., Nucl. Fusion, 1978, vol. 18, p. 353.
Kadomtsev, B.B. and Pogutse, O.P., Proc. 7th Int. Conference on Plasma Physics and Controlled Nuclear Fusion Research, Innsbruck, 1978, Vienna: IAEA, 1979, vol. 1, p. 649.
Prokhorov, A.S., Alekseev, A.G., Belov, A.M., Lazarev, V.B., and Mirnov, S.V., Plasma Phys. Rep., 2004. vol. 30, p. 136. https://doi.org/10.1134/1.1648938
Akulina, D.K., Andryukhina, E.D., Berezhetskii, M.S., Grebenshchikov, S.E., Voronov, G.S., Sbitnikova, I.S., Fedyanin, O.I., Kholnov, Yu.V., and Shpigel, I.S., Sov. J. Plasma Phys., 1978, vol. 4, p. 596.
Fedyanin, O.I., Akulina, D.K., Batanov, G.M., Berezhetskii, M.S., Vasil’kov, D.G., Vafin, I.Yu., Voronov, G.S., Voronova, E.V., Gladkov, G.A., Grebenshchikov, S.E., Kovrizhnykh, L.M., Larionova, N.F., Letunov, A.A., Logvinenko, V.P., Malykh, N.I., et al., Plasma Phys. Rep., 2007, vol. 33, p. 805.
Meshcheryakov, A.I., Vafin, I.Yu., and Grishina, I.A., Instrum. Exp. Tech., 2018, vol. 61, p. 842. https://doi.org/10.1134/S0020441218050196
Meshcheryakov, A.I. and Vafin, I.Yu., Prikl. Fiz., 2018, no. 4, p. 5.
Meshcheryakov, A.I., Akulina, D.K., Batanov, G.M., Berezhetskii, M.S., Voronov, G.S., Gladkov, G.A., Grebenshchikov, S.E., Grinchuk, V.A., Grishina, I.A., Kolik, L.V., Larionova, N.F., Letunov, A.A., Logvinenko, V.P., Petrov, A.E., Pshenichnikov, A.A., et al., Plasma Phys. Rep., 2005, vol. 31, p. 452.
Meshcheryakov, A.I., Vafin, I.Yu., and Grishina, I.A., Instrum. Exp. Tech., 2020, vol. 63, no. 5, p. 690. https://doi.org/10.1134/S002044122005019X
Meshcheryakov, A.I. and Vafin, I.Yu., Prikl. Fiz., 2018, no. 5, p. 42.
Meshcheryakov, A.I. and Grishina, I.A., Bull. Lebedev Phys. Inst., 2021, vol. 48, p. 22. https://doi.org/10.3103/S106833562101005X
Author information
Authors and Affiliations
Corresponding authors
Additional information
Translated by N. Goryacheva
Rights and permissions
About this article
Cite this article
Meshcheryakov, A.I., Grishina, I.A. & Vafin, I.Y. On the Issue of Existence of a Soft X-Ray Pit in the Ohmic and ECR Plasma Heating Regimes at the L-2M Stellarator. Instrum Exp Tech 64, 705–708 (2021). https://doi.org/10.1134/S0020441221050092
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0020441221050092