Contents

Journal of Contemporary Physics (Armenian Academy of Sciences)

Vol. 61, No. 1, 2026

Rare Clustering Processes in Nuclei in the Intermediate Mass Range

A. R. Balabekyan, G. H. Hovhannisyan, S. V. Gaginyan, S. G. Poghosyan, M. A. Khachatryan, E. L. Karapetyan, J. R. Drnoyan, and K. Katovsky p. 1  abstract

Contribution of Individual Harmonics to the Power of Circularly Polarized Synchrotron Radiation

S. E. Boichenko p. 6  abstract

Nonlinear Self-Focusing of Cosh-Gaussian Laser Beam in Relativistic Plasma with Linear Absorption

K. Walia and P. Sharma p. 14  abstract

Reversible Generation of Coherence between Metastable Quantum States Using Laser Pulses with Quadratic Frequency Chirp

G. P. Djotyan, A. A. Avetisyan, and A. P. Djotyan p. 21  abstract

First-Principles Study of B1 – xGaxPyBi1 – y Quaternary Alloys for Near-Infrared Optoelectronic, Spectroscopic and Sensing Applications

S. Touam, N. Mounis, F. Guenfoud, I. Bendjedide, S. Chelli, F. Z. Khelifati, D. Lamrous, O. Belaidi, S. Ghemid, and H. Meradji p. 28  abstract

On One of the Reasons for the Limited Applicability of the Morse Potential

V. A. Harutyunyan, A. H. Melikyan, and H. R. Minassian p. 40  abstract

Optical Properties of a Nematic Liquid Crystal Cell with Planar and Periodic Orientational Boundary Conditions

D. S. Alaverdyan, R. S. Hakobyan, A. H. Makaryan, and M. R. Hakobyan p. 44  abstract

The Hydrogen Molecule in the Heitler–London Model in First-Order Perturbation Theory

V. A. Harutyunyan p. 50  abstract

Oxyfluoride Barium Boroaluminosilicate Glasses Activated with Neodymium and Erbium Ions: Optical Properties

N. R. Aghamalyan, Ye. A. Kafadaryan, N. B. Knyazyan, G. G. Manukyan, V. V. Baghramyan, A. S. Saakov, S. V. Mkrtchyan, A. Y. Aleksanyan, L. A. Poghosyan, and M. N. Nersisyan p. 55  abstract

X-Ray Dynamical Diffraction Interferometer with Wave Front Division Using Two Asymmetrical Reflections

M. K. Balyan, V. P. Mkrtchyan, A. P. Aivazyan, and S. A. Petrosyan p. 62  abstract

Two-Dimensional Focusing of an X-Ray Beam on the Exit Surface of a Crystal with a Twist Boundary

L. V. Levonyan and H. M. Manukyan p. 71  abstract

Analysis of Surface States of Crystals Using Ideas of Dynamical Theory of Diffraction

M. K. Balyan p. 76  abstract

Investigation of the Characteristics of Hybrid Photovoltaic-Thermal Solar Energy Converters

R. R. Vardanyan, N. K. Badalyan, and J. S. Davtyan p. 84  abstract

Emergence of a Similariton with a Functionally Distinct Profile in Optical Fibers

V. Avetisyan, M. Sukiasyan, M. Papyan, L. Mikaelyan, M. Kalashyan, and A. Kutuzyan p. 91  abstract

Nonlinear Optical Method for Recording the Chirp of a Femtosecond Infrared Laser Pulse

M. L. Movsisyan and D. L. Hovhannisyan p. 96  abstract

Single-Photon Thermoelectric Detector Sensor with Superconducting Molybdenum Absorber

A. A. Kuzanyan, V. R. Nikoghosyan, and A. S. Kuzanyan p. 105  abstract

DNA Sequencing by the Ionic Blockade Currents Method

F. V. Gasparyan, L. F. Gasparyan, and V. V. Simonyan p. 112  abstract

Quantum-Chemical Study of Intermolecular Hydrogen-Atom Transfers in the Interaction of HO2 and CH3O2 Radicals with Ethylene

M. A. Evinyan, A. H. Davtyan, R. Yu. Chilingaryan, A. S. Abrahamyan, and S. D. Arsentev p. 122  abstract

Thermodynamics of the Order–Disorder Transition in the Double-Helical Structure of DNA in the Presence of CoTAllPyP4

G. V. Ananyan, P. H. Vardevanyan, and N. H. Karapetyan p. 127  abstract

Investigation of the Mobile Joint of Rectangular Microwave Waveguides with Consecutive Cross-Sections

R. A. Davtyan, A. S. Movsisyan, A. K. Aharonyan, and V. H. Avetisyan p. 132  abstract