Ашық рұқсат Рұқсат жабық

Рұқсат берілді Рұқсат жабық

Тек жазылушылар үшін

Том 88, № 6 (2025)

Жылы: 2025
Мақалалар: 6
URL: https://journals.rcsi.science/0044-0027/issue/view/24958

Бүкіл шығарылым

Ашық рұқсат
Рұқсат жабық

Рұқсат берілді
Рұқсат жабық

Тек жазылушылар үшін

ЯДРА. Эксперимент

Study of the Activation of 186,188,189Re in (γ, p) Reactions

Zheltonozhskaya M., Remizov P., Chernyaev A., Kuzmenkov A., Pupyshev V.

Аннотация

The article presents the result of studies of experimental spectrum-weighted average bremsstrahlung yields of 187Os(γ, p)186Re, 189Os(γ, p)188Re and 190Os(γ, p)189Re reactions, for a bremsstrahlung endpoint energy of 23 MeV. The findings of the modelling conducted within the framework of a statistical nuclear model using the TALYS1.96 software code indicate a predominant contribution of non-statistical mechanisms to the studied reactions. The calculations of the yields of the studied reactions, taking into account semi-direct processes, provide a satisfactory description of the experimental data.

Көрсету

Жасыру

Physics of Atomic Nuclei. 2025;88(6):435-439

435-439

(Rus)

(JATS XML)

ЯДРА. Теория

Analysis of 1⁺ Excitations in ¹⁶O with Polarized Proton Inelastic Scattering Reaction

Onegin M.

Аннотация

Weinvestigate the 1⁺ excitations in ¹⁶O nucleus within shell model. There are at least three excitations 1⁺ observed in (p, γ), (e, e´) and (p, p´) reactions at energies 16.22, 17.14 and 18.79 MeV. It is needed to include in valence space at least 0p_1/2 and 0d_5/2 shells in spherical shell model to produce such excitations. Wemade shell model calculations for different valence spaces. Also different Hamiltonians were used. Excitations in nuclei are characterized by spin and current transition densities which are different for different levels. Inelastic electron scattering excites both but inelastic proton scattering at zero degree excites mainly spin degrees of freedom. Comparing these two types of level excitation it is possible to deduce the role of spin and current degrees of freedom in every excitation. Unfortunately, the accuracy of this method is not too high. In this workwe study the influence of the type of excitation (spin or orbital) on the characteristics of the polarization of the inelastically scattered protons, viz., on the probability of spin-flip SNN. Weinverstigate the angular dependence of the value of this probability on the type of the excitation.

Көрсету

Жасыру

Physics of Atomic Nuclei. 2025;88(6):440-450

440-450

(Rus)

(JATS XML)

ЭЛЕМЕНТАРНЫЕ ЧАСТИЦЫ И ПОЛЯ. Эксперимент

TAIGA-100 Astrophysical Complex – Status and Opportunities for Deployment in Russia

Ivanova A., Lopatin M., Astapov I., Bezyazeekov P., Bonvech E., Blinov A., Borodin A., Budnev N., Bulan A., Busygin P., Volkov N., Volchugov P., Voronin D., Gafarov A., Yu A., Grebenyuk V., Gress O., Gress T., Gress E., Grinyuk A., Grishin O., Dyachok A., Zhurov D., Zagorodnikov A., Zirakashvili V., Ivanova A., Iliushin M., Kabannik I., Kalmykov N., Kindin V., Kiryuhin S., Kozhin V., Kompaniets K., Korosteleva E., Kravchenko E., Kryukov A., Kuzmichev L., Chiavassa A., Lagutin A., Lemeshev u., Lubsandorzhiev B., Lubsandorzhiev N., Lukanov A., Malakhov S., Mirgazov R., Monkhoev R., Yu E., Okuneva E., Osipova E., Pan A., Panov A., Pankov L., Pakhorukov A., Petrukhin A., Podgrudkov D., Poddubny I., Popova E., Postnikov E., Prosin V., Pushnin A., Poleschuk V., Raikin R., Yu A., Revyakin A., Rubtsov G., Ryabov E., Satyshev I., Samoliga V., Sveshnikova L., Sidorenkov A., Silaev A., Silaev A., Skurikhin A., Sokolov A., Tabolenko V., Tanaev A., Ternovoi M., Ushakov N., Chernov D., Shaikovsky A., Shulga M., Yashin I.

Аннотация

The article describes the project of the large-scale astrophysical complex TAIGA-100, aimed at solving a wide range of fundamental problems in the field of gamma-ray astronomy and cosmic ray physics. The results of the analysis of the astroclimate of potential sites for its placement are presented. The importance of in-situ measurements based on automatic monitoring is emphasized. The prototype of the astroclimatic station deployed on the territory of the current TAIGA-1 complex and the first results obtained using this station are described.

Көрсету

Жасыру

Physics of Atomic Nuclei. 2025;88(6):451-458

451-458

(Rus)

(JATS XML)

Cosmic ray acceleration and scattering in a 3D MHD model of compact massive star clusters

Kalyashova M., Bykov A., Badmaev D.

Аннотация

Compact young massive star clusters (YMSCs) contain dozens ofO-, B-, andWR-type stars with powerful, fast winds within a radius of ∼1 pc. In the turbulent environment of such clusters, particle acceleration by ensembles of shock waves and compression/rarefaction waves is possible. This work investigates the propagation and acceleration of particles in YMSCs using three-dimensional magnetohydrodynamic (MHD) simulations with the open source code PLUTO and its built-in module for solving the equations of motion for test charged particles. It is found that in the cluster core, near the termination shocks ofO-star winds, as well as at the collective wind termination shock, protons are accelerated to energies ≳100 TeV. The spatial and energy distributions of the particles are discussed.

Көрсету

Жасыру

Physics of Atomic Nuclei. 2025;88(6):459-464

459-464

(Rus)

(JATS XML)

Simulation of Extensive Air Showers Using PYTHIA 8 with Modified Hadronic Interaction Parameters

Abdunazarov M., Nikolaenko R.

Аннотация

Wepresent the results of extensive air shower simulations performed with the PYTHIA 8.3 event generator. Custom software has been developed to model the hadronic and muon components of the EAS. The simulation results obtained with PYTHIA 8.3 were compared to those from CORSIKA-77500 by analyzing the longitudinal and transverse muon distributions and the muon energy spectra in the EAS. The influence of free parameters of hadronization model in PYTHIA 8.3 on measurable EAS characteristics was studied. Additionally, EAS simulations were performed under the assumptions of an excess of heavy mesons and t-quarks in hadronic interactions.

Көрсету

Жасыру

Physics of Atomic Nuclei. 2025;88(6):465-474

465-474

(Rus)

(JATS XML)

Pile-up Background Estimation in Diboson Production by the Overlay Monte-Carlo Method in pp Collider Experiment

Zharova V., Kazakova K., Soldatov E.

Аннотация

In case of diboson production in ppcollisions there is a non-negligible probability that some events passing the final selection in data are actually from diﬀerent overlapping hard-scatter processes occurring within the same bunch-crossing. Such events, that consist of combination of two processes associated withdiﬀerent primary vertices, correspond to so-called pile-upbackground. Its contribution should be considered in analysis of diboson production at collider experiments. This article discusses an overlay Monte-Carlo approach to obtain a theoretical prediction of the pile-upevent count. According to the resulting estimate of the proposed method the impact of the pile-upbackground can be either subtracted from the data in the region of interest or accounted as an additional systematic uncertainty for the final result.

Көрсету

Жасыру

Physics of Atomic Nuclei. 2025;88(6):475-480

475-480

(Rus)

(JATS XML)

Пайдаланушының аты
Құпиясөз
Мені есте сақтау

Құпия сөзді ұмыттыңыз ба?	Тіркеу

Пайдаланушының аты
Құпиясөз
Мені есте сақтау

Құпия сөзді ұмыттыңыз ба?	Тіркеу