Vol. 118, No. 8, 2023

JETP Letters

Fields, Particles, and Nuclei

Experiment on Highly Efficient Deflection of a 1-GeV Proton Beam by a Bent Crystal at the PNPI Synchrocyclotron

D. A. Amerkanov, L. A. Vaishnene, Yu. A. Gavrikov, B. L. Gorshkov, A. S. Denisov, E. M. Ivanov, P. Yu. Ivanova, Yu. M. Ivanov, M. A. Koznov, V. I. Murzin and L. A. Shipunov p. 543 abstract

Measurement of the Energy of the 8.3-eV ²²⁹Th Isomer Using the Photoelectric Effect

F. F. Karpeshin p. 548 abstract

Astrophysics and Cosmology

GRB 221009A, Its Precursor, and Two Afterglows in the Fermi Data

B. Stern and I. Tkachev p. 553 abstract

Optics and Laser Physics

Evolution of the Luminescence Properties of Single CsPbBr₃ Perovskite Nanocrystals During Photodegradation

V. A. Baitova, M. A. Knyazeva, I. A. Mukanov, A. O. Tarasevich, A. V. Naumov, A. G. Son, S. A. Kozyukhin and I. Yu. Eremchev p. 560 abstract

Plasma, Hydro- and Gas Dynamics

Experimental Study of the Compressibility of a Helium Plasma at a Pressure up to 20 TPa

M. A. Mochalov, R. I. Il’kaev, S. V. Erunov, A. O. Blikov, V. A. Ogorodnikov, S. E. Elfimov, V. A. Arinin, V. A. Komrakov, M. I. Likhutov and I. P. Maksimkin p. 568 abstract

Condensed Matter

Spatially Inhomogeneous Ultrafast Demagnetization of a Nickel Magnetoplasmonic Crystal

I. A. Novikov, M. A. Kiryanov, A. Yu. Frolov, V. V. Popov, T. V. Dolgova and A. A. Fedyanin p. 574 abstract

Influence of the Gd Concentration on Superconducting Properties in Second-Generation High-Temperature Superconducting Wires

P. N. Degtyarenko, A. V. Sadakov, A. V. Ovcharov, A. Yu. Degtyarenko, S. Yu. Gavrilkin, O. A. Sobolevskii, A. Yu. Tsvetkov and B. I. Massalimov p. 579 abstract

Generation of Quantum Vortices by Waves on the Surface of Superfluid Helium

M. R. Sultanova, I. A. Remizov, L. P. Mezhov-Deglin and A. A. Levchenko p. 585 abstract

Thermally Induced Magnetization Reversal in Submicron Ni Particles Formed on Single Crystalline Lithium Triborate

D. A. Bizyaev, A. P. Chuklanov, N. I. Nurgazizov and A. A. Bukharaev p. 591 abstract

Molecular Dynamics Study of the Structural and Diffusion Properties of Dehydrated Layered Double Aluminum and Lithium Hydroxide

V. G. Luk’yanchuk, A. V. Lankin and G. E. Norman p. 597 abstract

Acoustic Coupling between Magnon Bose−Einstein Condensates in Yttrium Iron Garnet Films

G. A. Knyazev, A. N. Kuzmichev, P. E. Petrov, P. M. Vetoshko, V. I. Belotelov and Yu. M. Bunkov p. 603 abstract

Discussion

Comment on “On the Electric Area of an Electromagnetic Pulse” (JETP Letters 118, 296 (2023))

N. N. Rosanov, M. V. Arkhipov, R. M. Arkhipov and A. V. Pakhomov p. 608 abstract