Contents

Bulletin of the Lebedev Physics Institute

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Vol. 48, No. 2, 2021

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On the Origin of the Knee in the Cosmic Ray Energy Spectrum

A. D. Erlykin and S. K. Machavariani p. 31  abstract

Effect of the Grain Size of Powder Targets on the Spectra of Parametric X-Ray Radiation of Relativistic Electrons

V. I. Alekseev, A. N. Eliseev, I. A. Kishin, A. S. Klyuev, A. S. Kubankin and R. M. Nazhmudinov p. 35  abstract

Light Sgoldstinos and Higgs Sector in the Supersymmetric Extension of the Standard Model

E. A. Kriukova p. 41  abstract

Search for Electroweak Production of Charginos and Sleptons Decaying into Final States with Two Leptons and Missing Transverse Momentum at LHC Run 2 with the ATLAS Detector

Francesco Giuseppe Gravili p. 46  abstract

ION AND ELECTRON TEMPERATURE EVOLUTION IN PLASMA OF CURRENT SHEETS FORMED BY KRYPTON DISCHARGE

N. P. Kyrie and S. A. Savinov p. 49  abstract

Suppression of Spatiotemporal Instabilities in Broad-Area Lasers with Pump Modulation by External Optical Injection

E. A. Yarunova, A. A. Krents, N. E. Molevich and D. A. Anchikov p. 55  abstract

General Treatment of Reflection of Spherical Electromagnetic Waves from Spherical, Uneven Antarctic Surface and Its Implications for the Mystery Events Detected by ANITA

Paramita Dasgupta and Pankaj Jain p. 59  abstract

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