Vol. 81, No. 3, 2026

Moscow University Physics Bulletin

BIOPHYSICS AND MEDICAL PHYSICS (REVIEWS)

Photonuclear Reactions with Charged Particle Emission: Prospects for Medical Isotope Production

M. V. Zheltonozhskaya, P. D. Remizov, A. P. Chernyaev, A. A. Kim, V. V. Varlamov, and V. I. Shvedunov p. 375 abstract

ASTRONOMY, ASTROPHYSICS, AND COSMOLOGY (REVIEWS)

Greenhouse Effect on Planets and Moons of the Solar System

A. V. Aliakin, A. V. Karnaukhov, and M. E. Prokhorov p. 392 abstract

THEORETICAL AND MATHEMATICAL PHYSICS

Recovering of Gaps in Multivariate Time Series Using Methods of Mathematical Statistics and Machine Learning

V. S. Aleshnovskii, V. K. Avilov, P. V. Golubtsov, Yu. A. Kurbatova, O. A. Kuricheva, D. A. Makeev, P. A. Fadeeva, A. I. Chulichkov, and N. E. Shapkina p. 412 abstract

Helmholtz Free Energy in the Two-Dimensional Ising Model with Defects

V. V. Binkovskii and S. D. Mostovoy p. 420 abstract

Path Integral for a Charged Quantum Particle in a Magnetic Field

K. A. Lursmanashvili and V. V. Chistiakov p. 430 abstract

Real-Time Accumulation of Calibration Information and Its Application to Optimal Control for Inaccurate Predictive Models

E. M. Churakov and P. V. Golubtsov p. 436 abstract

Heat Capacity at Constant Pressure on the Saturation Curve of Argon

P. N. Nikolaev p. 448 abstract

PHYSICS OF NUCLEI AND ELEMENTARY PARTICLES

Features of the Formation of Spins of Fission Fragments in Complete Fusion Reactions of Deformed Nuclei

V. A. Drozdov, D. O. Eremenko, and O. A. Yuminov p. 454 abstract

RADIOPHYSICS, ELECTRONICS, ACOUSTICS

Sequential Ion-Beam and Cluster-Ion Surface Processing of YBa\({}_{\boldsymbol{2}}\)Cu\({}_{\boldsymbol{3}}\)O\({}_{\boldsymbol{7-\delta}}\)

A. V. Nazarov, D. S. Kireev, A. N. Ratsev, A. A. Tatarintsev, M. A. Ovchinnikov, A. M. Borisov, N. N. Andrianova, P. N. Degtyarenko, and A. A. Shemukhin p. 461 abstract

OPTICS AND SPECTROSCOPY. LASER PHYSICS

Electronic Properties of the CsPb\({}_{1-x}\)Mn\({}_{x}\)Cl\({}_{3}\) Solid Solution with the Perovskite Structure

E. D. Rubtsova, A. N. Vasil’ev, I. A. Kamenskikh, and I. N. Shpinkov p. 468 abstract

CONDENSED MATTER PHYSICS

Temperature Dependence of the Macroscopic Superconducting Order Parameter in Ba\({}_{\mathbf{0.45}}\)K\({}_{\mathbf{0.55}}\)Fe\({}_{\mathbf{2}}\)As\({}_{\mathbf{2}}\)

S. N. Pontis, S. A. Kuzmichev, A. D. Lomonosova, I. A. Nikitchenkov, T. E. Kuzmicheva, I. V. Morozov, and V. A. Grinenko p. 478 abstract

BIOPHYSICS AND MEDICAL PHYSICS

Fast Method of Bolus Shape Calculation in an Ion-Beam Therapy Planning System

A. A. Larionov, F. R. Studenikin, and O. P. Yushchenko p. 485 abstract

A Simulation Approach to Evaluate the Effect of Increasing Energy on Relationship between Dosimetry Quantities

Hassan Al Kanti p. 491 abstract

ASTRONOMY, ASTROPHYSICS, AND COSMOLOGY

On Planar Perturbations in Vertically Stratified Keplerian Discs in a Uniform Magnetic Field

K. Yu. Parusov p. 496 abstract

Temporal Analysis of the SOL2015-08-21 Flare Radiation, Theoretical Calculation of Observed Fluxes in the Lines of Calcium, Hydrogen, and Helium. Inhomogeneity of the Flare Structure and the Role of Plasmoids

Yu. A. Kupryakov, K. V. Bychkov, V. A. Maliutin, A. B. Gorshkov, O. M. Belova, and M. Bárta p. 503 abstract

Geodynamics of the Eastern Segment of the Greater Caucasus Based on GNSS Observations

A. P. Mironov, V. K. Milyukov, A. N. Ovsyuchenko, A. S. Larkov, and Kh. M. Khubaev p. 508 abstract

PHYSICS OF EARTH, ATMOSPHERE, AND HYDROSPHERE

Study of the Middepth Temperature Maximum in Meromictic Lakes of Kandalaksha Bay Based on Mathematical Modeling

I. N. Ivanova, A. V. Klenin, V. M. Stepanenko, E. D. Krasnova, and D. A. Voronov p. 525 abstract

Seiches in Kuril Lake Stimulated by the 2025 Mw 8.8 Kamchatka Earthquake

M. A. Nosov and D. N. Valeeva p. 534 abstract

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