Abstract The weighted average yields for 177,178mTa in (γ, xn) reactions have been measured for the first time at the 20, 40, and 55 MeV boundary energies of bremsstrahlung γ-quanta. Simulation results using the TALYS-1.9 program code demonstrate the dominance of statistical processes.

Abstract The weighted average population yields of 180mHf, 182mHf, and 177Lu have been measured in (γ, α) reactions at the 40 and 55 MeV boundary energies of bremsstrahlung γ quanta for the first time. The simulation is carried out as part of the TALYS-1.9 program code.

Abstract A comparative study of the total Mott and Bloch correction and the Lindhard−Sørensen correction in the point nucleus approximation to the Bethe stopping formula is performed for the ranges of a gamma factor \(1 \lesssim \gamma \lesssim 10\) and the ion nuclear charge number 6 ≤ Z ≤ 114. It is shown that the accurate calculation of the Mott–Bloch correction based on the Mott exact cross section

Absract —The effective potential is known to be given by the vacuum diagrams. In this paper we show that the massive loop integrations corresponding to the vacuum diagrams can be expressed through the massless loop integrations with the corresponding massive prefactor provided the special treatment of \(\delta (0)\)-singularity. In its turn, the massless loop integrations provide the useful instrument

Abstract \(z\)-Scaling of inclusive spectra as a manifestation of self-similarity and fractality of hadron interactions is illustrated. The scaling for negative particle production in \({\text{Au}} + {\text{Au}}\) collisions from BES-I program at RHIC is demonstrated. The scaling variable \(z\) depends on the momentum fractions of the colliding objects carried by the interacting constituents, and on

Abstract An intercomparison is carried out for some earlier approaches to the calculation of the normalized Mott cross section, as well as the approach proposed by the authors of the present work. It is demonstrated that applying the proposed method, along with the method of Lijian et al., is preferable for relevant calculations.

Abstract— We present the scope of research of a new collaboration FLAP (Fundamental & applied Linear Accelerator Physics collaboration) devoted to the study of the basics of electromagnetic interactions and new applications of controllable generation of electromagnetic radiation by relativistic electrons using functional materials.

Abstract Using the extended Nikiforov Uvarov method, the potential model as an algorithm, the harmonic and linear functions is employed for solving the hyper-radial Schrodinger equation. The eigenvalue energy and eigenfunction are obtained. The masses, the magnetic moments, and decay width rate for double heavy baryons are calculated. A comparison is presented with other works. The present potential

Abstract The three-dimensional NAM-ECRIS model is applied for studying the metal ion production in the DECRIS-PM Electron Cyclotron Resonance Ion Source. Experimentally measured extracted ion currents are accurately reproduced with the model. Parameters of the injection of metal vapors into the source are optimized. It is found that the axial injection of the highly directional fluxes allows increasing

Abstract At present, there are two Micromegas detector production sites at the Dzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research (DLNP JINR). The first site provides the production and testing of Micromegas chambers for the outer part of the large sectors (LM2) of the New Small Wheels for the ATLAS Muon spectrometer. It will produce and test 64 double-sided readout panels

Abstract We consider the q-derivatives of the Srivastava and Daoust basic multivariable hypergeometric function with respect to the parameters. This function embodies a entire number of various q-hypergeometric series of one and several variables. Explicit equations are given for general case of summation indexes with positive real coefficients. As an example derivatives of q-analog of non-confluent

Abstract Because of good optical and electrical properties, TiO2 nanoparticles are widely used in many fields of industry and medicine. To assess the effect of TiO2 nanoparticles on mice cognitive abilities and their accumulation in different organs, daily, up to 2-month period, experimental mice were administrated with TiO2 nanoparticles solution. Accumulation of titanium in blood, brain, liver, kidney

Abstract Dubna’s IBR-2 periodic pulsed research reactors are the most effective source of slow neutrons in extracted beams for studying various structures by using diffraction, small-angle scattering, reflectometry, inelastic scattering, and neutronography, thanks to their short-pulse neutrons and high average flux (reaching 1014 cm–2 s–1). At the same time, due to the specificity of the kinetics,

Abstract It is well known that the environmental radiation surrounding us consists of various types of radiation that could be dangerous to human health, causes air pollution and also has importance in industry and medicine. There are different types of gamma spectrometry and radiation protection technologies are available. Even though these technologies have been used for several decades; there is

Abstract We discuss a model of gravity with conformal symmetry appearing in the simplest extension of General Relativity with the Poincaré algebra terms. The nonlinear realization of symmetry causes the existence of five scalar fields. Therefore it looks desirable to use them for driving the inflation at the earliest stages of the Universe evolution. It is shown that the evolution of the scale factor

Abstract This paper aims to evaluate the range and stopping power of alpha particles in argon gas at different pressure of 0 to 1 bar, using the alpha radiation energy. The results show that the energy of the passed alpha particles has been decreased with increasing pressure in a small vacuum chamber. It is also observed that the amount of alpha particles reaching the detector follows a decreasing

Abstract In this paper, the authors present the composition of a prototype of the Detector Part of the Station (DPS) that uses a novel method for studying the integrated circuit durability to single-event effects (SEEs) during operation in outer space. The prototype operability is verified using Monte Carlo simulation.

Abstract The difference in properties of jets initiated by quarks and gluons as a result of hadron–hadron collisions, opens up the possibility of their recognition. Special quark-gluon discriminators of jets are built for this purpose. This paper discusses methods for measuring the fractions of quark and gluon jets in jet sample using the quark-gluon jet discriminator. This opens up the possibility

Abstract Semileptonic decays of vector mesons \(\rho \), \(\omega \), ϕ into a pion and lepton pair \({{e}^{ + }}{{e}^{ - }},{{\mu }^{ + }}{{\mu }^{ - }}\) are described in the chiral Nambu–Jona–Lasinio (NJL) model. Mixing of \(\omega \) with ϕ is taken into account in a description of vector ϕ meson decay. Direct production via a photon field and production with the participation of intermediate vector

Abstract As a matter of fact, overlapping of γ-transitions of different isotopes is a source of error and obstacle to get accurate and confident results. It must be considered and corrected for. In this work, different approaches are given to purify the gamma line 185.71 keV of 235U from any contribution and overlapping due to 186.21 keV of 226Ra. The approaches were applied on natural environmental

Abstract A systematic study of alpha and cluster decay of superheavy element with Z = 114 in the mass number range 269 < A < 339 is presented using the models such as coulomb and proximity potential model (CPPM), generalized liquid drop model (GLDM) and temperature dependent dynamical cluster model (DCM). The possible isotopes of superheavy element with Z = 114 are predicted by comparing alpha and

Abstract The study of antiproton yield in \(p\)–\(p\) and \(p\)–\(d\) collisions is important for the astrophysical search for dark matter consisting of Weakly Interacting Massive Particles. Refinement of the production cross section, angular and momentum spectra of produced antiprotons in a wide collision energy range could help to treat the results obtained by the AMS-02 and PAMELA orbit spectrometers

Abstract The generalized minimal subtraction scheme for ultraviolet renormalization (Kuznetsov and Tkachov, 1988) is fine-tuned with applications in mind. The resulting MS4 scheme obviates extraneous regularizations and renders momentum integrands integrable by subtracting troublesome asymptotic terms in a physically correct fashion due to the use of special minimal subtraction operators defined congruously

Abstract To assess the effect of silver nanoparticles on mice cognitive abilities, daily, up to 4-month period, experimental mice were administrated with silver nanoparticles solution. Accumulation of silver in brain was assessed by neutron activation analysis. Cognitive abilities in mice before and after silver nanoparticles administration were evaluated in the Morris water maze behavioral test. No

Abstract The process of atomic nucleus recoil under the elastic scattering of a neutral particle, a hypothetical dark matter particle (WIMP) in particular, is considered. In the case of a low-energy recoil of the nucleus, the relations between the probability of ionization of the recoil atom and the cross section of ionization of such an atom by a photon, as well as by an electron, are obtained. These

Abstract We propose an algorithm to find a solution to an integro-differential equation of the DGLAP type for all the orders in the running coupling \(\alpha \) with splitting functions given at a fixed order in \(\alpha \). Complex analysis is significantly used in the construction of the algorithm, we found a simpler way to calculate the involved integrals over contours in the complex planes than

Abstract The emergence of a hierarchy of scales in the case of spontaneous radiative breaking of conformal symmetry is discussed using the example of a simple quantum-field-theory model. The Coleman–Weinberg (C–W) mechanism is implemented in the one-loop approximation of the effective potential of a scalar field interacting with a fermion field. The emergence of a hierarchy between the renormalization

Abstract In this paper, the contribution of the interaction in the structure function of the deuteron is investigated. For this study we use two different methods, constituted nucleons model and the DGLAP evolution equations. We obtain the interaction term using calculated proton, neutron and deuteron structure functions. The extracted results are in agreement with experimental data. The results achieved

Abstract A simple nonperturbing technique for the electron relativistic bunch diagnostics has been proposed which does not require the use of an interferometer for spectral measurements. The interferometer functions are performed by a slit target in which diffraction radiation is generated. The measurements of electron bunch length are carried out by shifting one half of the target relative to the

Abstract We present accurate numerical results for the one-dimensional stationary Schrödinger equation in the case of three quantum problems: quantum harmonic oscillator, radial Schrödinger equation for a Hydrogen atom, and a particle penetration through the potential barrier. All of them were solved by the Numerov method with high accuracy and we plot their wave functions using the results of numerical

Abstract We compute the dilepton production rate from deconfined phase of quark-gluon plasma using the quasi-particle model (QPM). The computation is based on an extension of our previous work. In this model, the finite quark mass is replaced by the effective quark mass which is considered as the sum of square of current mass, coupling of thermal and current mass and square of thermal mass. This leads

Abstract This paper presents the results of an automation of the processes of measuring the dose rate and movement of highly active samples in the controlled zone of the third beam of the IBR-2 reactor. A detailed analysis of the choice of an automated system based on a robotic manipulator with a video-surveillance system and distance measurement, as well as a dosimetric complex for determining the

Abstract This work investigates in some details the conditions and parameters affecting and controlling the performance of three different types of HpGe spectrometers. The quality and accuracy of any results depend on the optimum working parameters. The major geometrical and electronics parameters were comprehensively studied and validated for n- and p-type germanium detectors. The spectrometers, at

Abstract The velocity, charge, and isotopic distributions of the products of nuclear reactions with 2 ≤ Z ≤ 11 have been studied in combinations of 18O (35 MeV/nucleon) + 181Та (9Ве) with a different isotope spin. The correlation of the isotope yields for the detected light elements with value Qgg has been established. The cross sections for the formation of neutron-rich nuclei have been measured and

Abstract This work analyzes the \(SePaC\) method of fractals and various background events (mixed, random, and distributed according to Gauss’s law, as well as by power and exponential laws) in order to search and reconstruct fractal structures. It is shown that some of the background events are reconstucted as fractals. Dimensional distributions of various events are considered. It is found that these

Abstract A number of neutronics of JNIR big uranium target are simulated towards the planning of experimental investigations aimed to the transmutation of radioactive waste. Integral data of the neutron yield and energy spectra are given for several homogeneous spallation targets which are planned to be used as insertions in uranium blanket. Combined spallation targets are also of interest, because

Abstract A track reconstruction method based on a constrained combinatorial search for track candidates, i.e. combinations of detector hits possibly belonging to a track, is presented. The algorithm has been implemented as a Vector Finder software toolkit containing a track reconstruction procedure and tools to determine hit acceptance windows (a priori constraints) for the track search. Track reconstruction

Abstract This paper offers a method for estimating the normalized instrument response function (IRF) of the URAGAN muon hodoscope (MH). A multiparametric model of the instrument response function is derived from digitally processed time series of MH matrix data and the hypothesis of muon-flux (MF) intensity distribution is formulated. Formulae for estimating the normalized instrument response function

Abstract The IBR-2M pulsed nuclear reactor operating at the JINR Laboratory of Neutron Physics delivers an intense neutron flux on the order of 1013 n/(cm2 s). By the end of the 2030s, it will outlive its useful lifetime and will have to be replaced with a new machine. The alternative neutron sources proposed so far require extensive and costly R&D efforts, and positive results cannot be guaranteed

Abstract The authors present the current status of the NUCLEON-2 mission aimed at directly measuring the chemical and isotope composition of galactic cosmic rays. A model-independent method of analysis and the results of an analysis of the beam-test experiment are presented. Future plans as part the Detector Part of the System for Investigating and Irradiating Perspective Semiconductor Micro- and Nanoelectronic

Abstract Covariant perturbation theory allows one to calculate the nonlocal kernel of the evolution equation on a spin Riemannian manifold. The proposed axiomatic definition of effective action introduces a universal scale parameter with the dimension of the square of the distance into the dimensionless mathematical theory. It is shown that this purely geometric result has the physical meaning of the

Abstract The Banfi–Marchesini–Smye (BMS) equation accounts for resummation of nonglobal logarithms to all orders in perturbation theory in the large-\({{{\text{N}}}_{{\text{c}}}}\) approximation. We show that the squared amplitudes for the emission of soft energy-ordered gluons are correctly embedded in this equation, and explicitly verify that they coincide with those derived in our previous work

Abstract Most modern magnetic confinement fusion devices feature deuterium plasma with the emission of 2.5 MeV neutrons. The neutron yield during the discharge gives information on plasma heating and confinement efficiency. Hence, the challenge of measuring a fast DD neutron flux becomes an increasingly important task for fusion research. This work studies the possibility of using a LaCl3(Ce) scintillation

Abstract The operation of a gamma densitometer (GD) of ID = 100 mm is considered; it is intended for the diagnostics of three-phase oil–water–gas flows using the separationless method, when the composition of components is determined by a spectrometric analysis of gamma irradiation with two different photon energies. The 241Am and 137Cs isotopes, installed in the same housing, are used as gamma sources

Abstract This paper presents a conceptual design of the compact SC230 superconducting cyclotron that accelerates a beam of protons to 230 MeV and is intended for proton therapy and biomedical research. SC230 is an isochronous four-sector cyclotron based on a shell-type magnet with a magnetic field in the center of 1.7 T. Superconducting coils will be enclosed in a cryostat; all other parts of the cyclotron

Abstract Radiobiological experiments with the irradiation of various biological samples by nuclei from boron to neon with a primary energy of 30–50 MeV/nucleon are performed on the U400M cyclotron of the Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research. The linear energy transfer (LET) of the nuclei in samples is calculated using the code Lise++. For reducing the energy of nuclei

Abstract For the Precision Laser Inclinometer (PLI) temperature resistivity increase the essential design innovations have been developed and introduced in the PLI accepted design scheme. The proposed methods of the temperature resistivity guarantee—as shown experimentally—the achievement of a long term PLI sensitivity of 2.8 × 10–11 rad for allowed ±0.1°С variation of temperature of surrounding environment

Abstract— We have studied proton radioactivity of heavy nuclei of atomic number range 72 < Z < 88. We have calculated the energy released during the proton decay (QP) and half-lives of proton decay. To study the competition between different decay modes, we have compared the proton decay half lives with that of the decay modes such as alpha decay, beta decay, cluster decay and spontaneous fission.

Abstract The conceptual new design of the Precision Laser Inclinometer (PLI) is proposed and developed what resulted in creation of compact instrument for its possible use in a restricted vacuum volume of sensitive elements of Gravitational Wave Interferometric Antennas. It is shown that the use of a position sensitive method—the dividing plates method—for the detection of angular inclination of laser

Abstract At the VEPP-4 accelerator complex experiments on high energy physics, nuclear physics, synchrotron radiation and hard X-ray are carried out. The paper presents the current status of the complex and its experimental programs. The development of the resonance depolarization method for the absolute beam energy measurement using a laser polarimeter is discussed. The results of observing the azimuthal

Abstract Lead converter was irradiated with electron beams with energies of 60, 80 and 100 MeV. And holmium samples were irradiated with a flux of bremsstrahlung, which was formed in a lead converter. The rates of about 20 photonuclear reactions in 165Ho, which are induced by bremsstrahlung, were measured. Simulations to determine the fluence of electrons, photons, neutrons for holmium samples and

Abstract In this paper, we report on the study of the optical properties of YAG:Ce and GGG:Ce garnet crystals after irradiation in a 660 MeV proton beam with a fluence up to 8.9 × 1014 protons/cm2. We found that the transparency of both crystals fell by no more than 7% in the region of their own luminescence. The light yield of the YAG:Ce sample, measured one year after the irradiation, dropped by

Abstract Additional proton beams with variable energy are simulated by the Monte Carlo method for testing the radiation resistance of electronics and other applications on the SC-1000 synchrocyclotron at the Konstantinov Institute of Nuclear Physics (PNPI). It is established that the spectrum of beams with a variable energy of ~62, 100, 200, 300, 400, 500, 600, 700, 800, 900, and 1000 MeV achieved

Abstract Thunderclouds act as the sources of energetic radiation, the main components of which are gamma particles and electrons. The radiation can be registered by satellite or ground-based detectors. The effect is caused by the bremsstrahlung of electrons accelerated by the cloud electric field. The study of high-energy atmospheric phenomena requires analyzing the data on the distribution of cloud

Abstract This publication is devoted to the analysis of ceramic items found in Bolgar, the capital of Volga Bulgaria (now it is the territory of Tatarstan, Russia). Neutron activation analysis (NAA) and X-ray fluorescence (XRF) analysis of the ceramic paste of glazed medieval stonepaste ceramics (fritware) was carried out by the NAA group at the IREN facility of the Frank Laboratory of Neutron Physics

Abstract Surface waves propagating in the semi-bounded collisional hot QCD medium (quark-gluon plasma) are considered. To investigate the effect of collisions as damping and non-ideality factor, the longitudinal and transverse dielectric functions of the quark-gluon plasma are used within the Bhatnagar–Gross–Krook (BGK) approach. The results were obtained both analytically and numerically in the long

Abstract The vertex silicon detector is part of the NICA-MPD tracking system designed for efficient registration of short-lived products of nucleus–nucleus interactions. This paper presents the results of a computer simulation of the identification capability of the MPD tracking system which includes a Time-Projection Chamber (TPC) and a vertex detector based on Monolithic Active Pixel Sensors (MAPS’s)

Abstract This work relates to the study and characterization of the CTDI (Computed Tomography Dose Index) for the 16 slices CT scanner. The CTDI has been simulated with the Monte Carlo code GATE for PMMA (polymethylmethacrylate) digital phantoms of various diameters (1–50 cm) at various kVp (80, 110, 130) and mAs (100, 200, 300, 400 mAs) levels. After using a High-Performance Computing (HPC) station

Abstract The description of the muon capture system units with different targets (gas and solid-state) is presented. Using the muon-event selection system and high-purity germanium (HPGe) detectors, precise measurements of the time-energy distributions following ordinary muon capture in the isotopically-enriched 130Xe, 82Kr, and 24Mg nuclei were performed. The optimal parameters of the muon capture

Abstract This paper investigates an analytical illustration of ignition conditions for the aneutronic reaction of proton-boron plasma in the presence of the magnetic field for fusion. In particular, the criterion for this plasma target is derived through two-temperature Lindl–Widner diagrams. Since the heating and cooling terms in the energy balance equation are affected by inequality between ions