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

Abstract For ordinary (bipolar) radiation, the integral of the electric-field strength in time is zero. The possibility of generating unipolar radiation was theoretically considered in (E.G. Bessonov. Preprint no. 76, Lebedev Physical Institute, Academy of Sciences of the Soviet Union, Moscow, 1990) for the first time. In this work, unipolar radiation is defined as radiation for which the integral

Abstract In this paper we conduct a phenomenological study for the search of evidence for the intrinsic charm mechanism in double \({J \mathord{\left/ {\vphantom {J \psi }} \right. \kern-0em} \psi }\) production at the COMPASS experiment using the CERN \({{\pi }^{ - }}\) beam at 190 GeV/c. Estimations on \({J \mathord{\left/ {\vphantom {J \psi }} \right. \kern-0em} \psi }\) pair cross-sections and

Abstract Today the task of ensuring the radiation resistance of ICs for space exploration is very important. To solve this problem, a detailed examination of radiation effects on electronics is required. In this paper, the DPS-NICA project, aimed at solving these problems, is presented, as are preliminary simulation results that confirm the operability of the fundamental methods of this project.

Abstract In this talk we review the minimal embedding in \(\mathcal{N} = 2\), \(D = 5\) supergravity of a five–dimensional dilaton–gravity theory that serves as a toy model for the holographic dual of six–dimensional little string theory. Interestingly, the toy model also arises in the continuum version of the clockwork mechanism that was recently proposed as a means of addressing the hierarchy problem

Abstract Although one has trusted that the tree-level string two-point amplitudes vanish due to the infinite volume of residual gauge symmetry, recently the non-zero string two-point amplitudes have been pointed out in the path integral formalism. We consider them in the operator formalism. We have succeeded in obtaining the non-zero two-point amplitude in an open bosonic string theory by introducing

Abstract We present the calculation of the solution of recurrence relations for radial pullback of cubic interaction in AdSd + 1 by using Wolfram Mathematica as an effective tool for computing large expressions. Investigation of the results of these calculations allows us to guess the ansatz for solution and then obtain it completely.

Abstract We discuss how the massive higher spin bosonic and fermionic fields in four-dimensional \(AdS\) space can be described in the frame-like gauge invariant multispinor formalism. We consider both the Lagrangian formulation as well as the unfolded equations.

Abstract We show that the fluctuations of the periodic orbits of deterministically chaotic systems can be captured by supersymmetry, in the sense that they are repackaged in the contribution of the absolute value of the determinant of the noise fields, defined by the equations of motion.

Abstract Higher-point functions of gauge invariant composite operators in \(\mathcal{N} = 4\) super Yang–Mills theory can be computed via triangulation. The elementary tile in this process is the hexagon introduced for the evaluation of structure constants. A gluing procedure welding the tiles back together is needed to return to the original object. We re-analyse previous work on five-point functions

Abstract We consider the role of a 3-form gauge field and a dynamical supermembrane coupled to the former in the Veneziano–Yankielowicz effective field theory describing the gaugino condensate of \(\mathcal{N} = 1\), \(D = 4\) SYM. In particular, we show how these objects provide a self-consistent description of BPS domain walls interpolating between two different SYM vacua and get their explicit shape

Abstract We shortly describe classical models of spinning electron and list a number of theoretical issues where these models turn out to be useful. Then we discuss the possibility to extend the range of applicability of these models by introducing an interaction,that forces the spin to align up or down relative to its precession axis.

Abstract We review the theory for a multiplet of interacting partially massless spin-2 fields around (anti-) de Sitter (A)dS\(_{D}\) background and give new results concerning the couplings between a massless spin-1 vector field and a partially massless spin-2 field.

Abstract Spin Ruijsenaars–Schneider model introduced by Krichever and Zabrodin is a generalisation of a finite-dimensional integrable system due to Ruijsenaars and Schneider, where particles carry additional internal degrees of freedom. We review how a Hamiltonian structure of the spin model with the hyperbolic potential can be obtained by means of Poisson reduction applied to a specially chosen Poisson