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Enumeration	Reference	Cover	Find
1.	Bogomolov, E. A., et al. (author) Boron Isotopes in the PAMELA Experiment 2024 In: Physics of Atomic Nuclei. - : Pleiades Publishing Ltd. - 1063-7788 .- 1562-692X. ; 87:2, s. 71-76 Journal article (peer-reviewed)abstract In this work, a new analysis of the isotopic composition of boron nuclei (B) in galactic cosmic rays (GCRs) in the range of rigidities of 1-5 GV (nuclear energies 0.1-1.5 GeV/nucleon) was carried out using data from the PAMELA space experiment 2006-2014 on the rigidity of detected nuclei and their velocity (time-of-flight analysis and ionization losses in the instrument's multilayer calorimeter). The new results of the PAMELA experiment expand the energy range of previous measurements, are consistent with the few existing data, and indicate deviations of the B isotope ratios from the GALPROP simulation data for the GCR, similar to the deviations for the Li and Be isotopes in the PAMELA data, which can be interpreted as evidence of observation against the background of the GCR of the contribution of several local sources from explosions of nearby (hundreds of parsecs) supernovae.
2.	Clement, Christophe (author) Upgrade of the ATLAS Hadronic Tile Calorimeter for the High Luminosity LHC 2021 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 84:3, s. 368-372 Journal article (peer-reviewed)abstract The Tile Calorimeter (TileCal) is the hadronic calorimeter covering the central region of the ATLAS experiment. It is a scintillating plastic tiles and steel absorbers sampling calorimeter. The scintillators are read-out by wavelength shifting fibers coupled to photomultiplier tubes (PMTs). The TileCal response and its readout electronics are monitored to better than 1% using radioactive source, laser and charge injection systems. The TileCal electronics will undergo major upgrades for the high luminosity phase of the LHC (HL-LHC), so that the system can cope with increased radiation and can meet the requirements of a 1-MHz trigger. Digitized signals from all PMTs are sent to the back-end electronics and to the first level of trigger at 40 MHz. This will provide better precision in the trigger system and will allow the development of more complex trigger algorithms. The TileCal upgrade program has included extensive R&D and test beam studies. A Demonstrator module was inserted in ATLAS in 2019 for testing in actual detector conditions. The main features of the TileCal upgrade program and results obtained from the Demonstrator tests are discussed.
3.	Ershov, S. N., et al. (author) Cluster model with core excitations. The Be-11 example 2014 In: Physics of Atomic Nuclei. - : Pleiades Publishing Ltd. - 1562-692X .- 1063-7788. ; 77:8, s. 989-998 Journal article (peer-reviewed)abstract Bound states and low-lying resonances of the Be-11 one-neutron halo nucleus have been calculated within a two-body cluster model with core excitation. The lowest Be-10 core excited 2(+) state was considered as a quadrupole vibration. Shallow potentials were applied for neutron-core interaction, preventing motion in Pauli forbidden orbits. A good description of available experimental data including dipole excitations of Be-11 was obtained. For the bound 1/2(-) excited state the wave-function component gives the dominant contribution to the structure, which differs from results obtained in cluster models with deep potentials.
4.	Ershov, S. N., et al. (author) New method for solution of coupled radial Schrodinger equations: application to the Borromean two-neutron halo nucleus C-22 2014 In: Physics of Atomic Nuclei. - : Pleiades Publishing Ltd. - 1562-692X .- 1063-7788. ; 77:3, s. 374-383 Journal article (peer-reviewed)abstract A generalized Prufer transformation within the framework of the modified variable phase method has been used for numerical solution of coupled radial Schrodinger equations at negative energies. The method has been applied to calculations of the Borromean two-neutron halo nucleus C-22, for which an unusually large value of the matter radius has recently been extracted from measured reaction cross sections. The giant size can only be explained by an extremely loose binding that is, however, not yet known experimentally. Within the three-body cluster model we have explored the sensitivity of the C-22 matter and charge radii and soft dipole mode excitations to the two-neutron separation energy.
5.	Ershov, S. N., et al. (author) Novel method for solution of coupled radial Schrodinger equations 2011 In: Physics of Atomic Nuclei. - 1562-692X .- 1063-7788. ; 74:8, s. 1151-1161 Journal article (peer-reviewed)abstract One of the major problems in numerical solution of coupled differential equations is the maintenance of linear independence for different sets of solution vectors. A novel method for solution of radial Schrodinger equations is suggested. It consists of rearrangement of coupled equations in a way that is appropriate to avoid usual numerical instabilities associated with components of the wave function in their classically forbidden regions. Applications of the new method for nuclear structure calculations within the hyperspherical harmonics approach are given. RAMOWITZ M, 1964
6.	Fischer, Tobias, et al. (author) Core collapse supernovae in the QCD phase diagram 2012 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 75:5, s. 613-620 Journal article (peer-reviewed)abstract We compare two classes of hybrid equations of state with a hadron-to-quark matter phase transition in their application to core collapse supernova simulations. The first one uses the quark bag model and describes the transition to three-flavor quark matter at low critical densities. The second one employs a Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model with parameters describing a phase transition to two-flavor quark matter at higher critical densities. These models possess a distinctly different temperature dependence of their transition densities which turns out to be crucial for the possible appearance of quark matter in supernova cores. During the early post-bounce accretion phase quark matter is found only if the phase transition takes place at sufficiently low densities as in the study based on the bag model. The increase critical density with increasing temperature, as obtained for our PNJL parametrization, prevents the formation of quark matter. The further evolution of the core collapse supernova as obtained applying the quark bag model leads to a structural reconfiguration of the central protoneutron star where, in addition to a massive pure quark matter core, a strong hydrodynamic shock wave forms and a second neutrino burst is released during the shock propagation across the neutrinospheres. We discuss the severe constraints in the freedom of choice of quark matter models and their parametrization due to the recently observed 2M ⊙ pulsar and their implications for further studies of core collapse supernovae in the QCD phase diagram.
7.	Isakov, V.I., et al. (author) Isomeric and two-quasiparticle states in the neutron-excess odd-odd nucleus 134Sb 2007 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 70:5, s. 818-826 Journal article (peer-reviewed)abstract Detailed theoretical calculations of the properties of the neutron-excess odd–odd nucleus134 Sb are performed by using different theoretical approaches. A comprehensive comparison with the recentexperimental data is performed; this comparison suggests the presence of isomeric states among the low-lying levels of this nucleus. These states are the twins of the corresponding levels of the odd–odd nucleus210 Bi that is situated near the stability line. The obtained results manifest the similarity of nuclear structurein the region of the “remote” doubly magic nucleus 132 Sn and in the region of the classical stable doublymagic nucleus 208 Pb.
8.	Kuksa, V. I., et al. (author) Near-threshold boson pair production in the model of smeared-mass unstable particles 2010 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 73:9, s. 1622-1631 Journal article (peer-reviewed)abstract Near-threshold production of boson pairs is considered within the framework of the model of unstable particles with smeared mass. We describe the principal aspects of the model and consider the strategy of calculations including the radiative corrections. The results of calculations are in good agreement with LEP II data and Monte-Carlo simulations. Suggested approach significantly simplifies calculations with respect to the standard perturbative one.
9.	Mikhailov, V. V., et al. (author) Trapped Positrons and Electrons in the Inner Radiation Belt According to Data of the PAMELA Experiment 2018 In: Physics of Atomic Nuclei. - : PLEIADES PUBLISHING INC. - 1063-7788 .- 1562-692X. ; 81:4, s. 515-519 Journal article (peer-reviewed)abstract Measurements of secondary-electron and secondary-positron fluxes below the geomagnetic cutoff in near-Earth space were performed by means of the PAMELA magnetic spectrometer installed on board the Resurs-DK1 satellite launched on June 15, 2006, in an elliptical orbit of inclination 70A degrees and altitude 350 to 600 km. This spectrometer permits measuring the fluxes of electrons and positrons over a wide energy range, as well as determining their spatial distributions to a precision of about 2A degrees. A calculation of particle trajectories in the geomagnetic field makes it possible to separate electrons and positrons originating from cosmic-ray interactions in the Earth's magnetosphere. The spatial distributions of quasitrapped, trapped, and short-lived albedo positrons and electrons of energy above 70 MeV in the radiation belt were analyzed. The ratio of the electron-to-positron fluxes and the energy spectra of the electrons and positrons in question are indicative of different productionmechanisms for stably trapped and quasitrapped secondary particles.
10.	Milstead, David (author) Tests of QCD at colliders 2008 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 71:4, s. 618-629 Journal article (peer-reviewed)abstract Measurements at colliders can provide precision tests of perturbative QCD as well as leading the development of nonperturbative QCD techniques. This paper discusses precision tests of pQCD calculations made with data taken at ep, e (+) e(-), and hadron-hadron facilities. Measurements of the fragmentation process are also discussed in the context of nonperturbative models.
11.	Tabor, S. L., et al. (author) Structure of neutron-rich s-d shell nuclei 2002 In: Physics of Atomic Nuclei. - : Pleiades Publishing Ltd. - 1063-7788 .- 1562-692X. ; 65:4, s. 713-719 Journal article (peer-reviewed)abstract States in neutron-rich s-d shell nuclei were populated in the reaction of a 14C beam at Elab = 22 MeV on a 14C target. Coincidences between γ rays and either other γ rays or light charged particles were measured. γ rays in coincidence with protons established levels at 66.8, 1730, 1823, and 2219 keV in 27Na. The states are compared with calculations based on the s-d shell model and the cranked Nilsson-Strutinsky model. A number of levels in 24Ne were observed in both α-γ and α-γ-γ coincidences and are compared with shell-model calculations.
12.	Titarenko, Yu E., et al. (author) Measurement and simulation of the cross sections for nuclide production in Fe-56 and Cr-nat targets irradiated with 0.04- to 2.6-GeV protons 2011 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 74:4, s. 523-536 Journal article (peer-reviewed)abstract The cross sections for nuclide production in thin Fe-56 and Cr-nat targets irradiated by 0.04-2.6-GeV protons are measured by direct gamma spectrometry using two gamma spectrometers with the resolutions of 1.8 and 1.7 keV for the Co-60 1332-keV gamma line. As a result, 649 yields of radioactive residual product nuclei have been obtained. The Al-27(p, x)Na-22 reaction has been used as a monitor reaction. The experimental data are compared with the MCNPX (BERTINI, ISABEL), CEM03.02, INCL4.2, INCL4.5, PHITS, and CASCADE07 calculations.
13.	Titarenko, Yu E., et al. (author) Measurement and simulation of the cross sections for nuclide production in Nb-93 and Ni-nat targets irradiated with 0.04- to 2.6-GeV protons 2011 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 74:4, s. 537-550 Journal article (peer-reviewed)abstract The cross sections for nuclide production in thin Nb-93 and Ni-nat targets irradiated by 0.04- to 2.6-GeV protons have been measured by direct gamma spectrometry using two gamma spectrometers with the resolutions of 1.8 and 1.7 keV in the Co-60 1332-keV gamma line. As a result, 1112 yields of radioactive residual nuclei have been obtained. The Al-27(p, x)Na-22 reaction has been used as a monitor reaction. The experimental data have been compared with the MCNPX (BERTINI, ISABEL), CEM03.02, INCL4.2, INCL4.5, PHITS, and CASCADE07 calculations.
14.	Titarenko, Yu E., et al. (author) Measurement and simulation of the cross sections for nuclide production in W-nat and Ta-181 targets irradiated with 0.04- to 2.6-GeV protons 2011 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 74:4, s. 551-572 Journal article (peer-reviewed)abstract The cross sections for nuclide production in thin (nat)Wand Ta-181 targets irradiated by 0.04-2.6-GeV protons have been measured by direct gamma spectrometry using two gamma spectrometers with the resolutions of 1.8 and 1.7 keV in the Co-60 1332-keV gamma line. As a result, 1895 yields of radioactive residual product nuclei have been obtained. The Al-27(p, x)Na-22 reaction has been used as a monitor reaction. The experimental data have been compared with the MCNPX (BERTINI, ISABEL), CEM03.02, INCL4.2, INCL4.5, PHITS, and CASCADE07 calculations.
15.	Titarenko, Yu E., et al. (author) Measurement and simulation of the cross sections for the production of Gd-148 in thin W-nat and Ta-181 targets irradiated with 0.4- to 2.6-GeV protons 2011 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 74:4, s. 573-579 Journal article (peer-reviewed)abstract The cross sections for the production of Gd-148 in W-nat and Ta-181 targets irradiated by 0.4-, 0.6-, 0.8-, 1.2-, 1.6-, and 2.6-GeV protons at the ITEP accelerator complex have been measured by direct alpha spectrometry without chemical separation. The experimental data have been compared with the data obtained at other laboratories and with the theoretical simulations of the yields on the basis of the BERTINI, ISABEL, CEM03.02, INCL4.2, INCL4.5, CASCADE07, and PHITS codes.
16.	Volkov, M. V., et al. (author) Investigation of scattering processes in quantum few-body systems involving long-range interaction by the complex-rotation method 2013 In: Physics of Atomic Nuclei. - 1063-7788 .- 1562-692X. ; 76:2, s. 188-195 Journal article (peer-reviewed)abstract The complex-rotation method adapted to solving the multichannel scattering problem in the two-body system where the interaction potential contains the long-range Coulomb components is described. The scattering problem is reformulated as the problem of solving a nonhomogeneous Schrodinger equation in which the nonhomogeneous term involves a Coulomb potential cut off at large distances. The incident wave appearing in the nonhomogeneous term is a solution of the Schrodinger equation with longrange Coulomb interaction. This formulation is free from approximations associated with a direct cutoff of Coulomb interaction at large distances. The efficiency of this formalism is demonstrated by considering the example of solving scattering problems in the alpha-alpha and p-p systems.
17.	Bajpeyi, Awanish, et al. (author) Study of the (p, γ) and (α, γ) reactions for 96,98,104Ru and 112,114,116Sn at astrophysically relevant energies 2017 In: Physics of Atomic Nuclei. - 1063-7788. ; 80:3, s. 402-411 Journal article (peer-reviewed)abstract Cross section and S factor of the proton- and alpha-induced reactions have been studied for the Ruthenium and tin isotopes in the effective energy range, i.e. Gamow window. These reactions are important for developing the understanding for nucleosynthesis, particularly for the synthesis of p nuclei (p process). In this work, cross sections and S factor have been calculated through TALYS in Hauser–Feshbach formalism using nuclear densities calculated in relativistic mean field (RMF) formalism. Calculated results of cross sections, S factor and nuclear structure have been compared with existing theoretical as well as experimental results available and are found to be in good agreement.
18.	Christiansen, Peter, et al. (author) How to extract physics from nu (dyn) 2012 In: Physics of Atomic Nuclei. - 1562-692X. ; 75:6, s. 744-747 Journal article (peer-reviewed)abstract In this paper we summarize the properties of nu (dyn) and discuss briefly how the results can be interpreted in terms of a simple pair-production model. The ideas are then illustrated in detail with a PYTHIA simulation study of forward-backward correlations in pp collisions.
19.	Gondolo, P, et al. (author) Neutralino relic density including coannihilations 1998 In: PHYSICS OF ATOMIC NUCLEI. - : MAIK NAUKA/INTERPERIODICA PUBL. - 1063-7788. ; 61:7, s. 1081-1097 Journal article (other academic/artistic)abstract The relic density of the lightest neutralino, the lightest supersymmetric particle, is evaluated in the minimal supersymmetric extension of the Standard Model (MSSM). For the first time, all coannihilation processes between neutralinos and charginos are i
20.	Prokhorov, L. G., et al. (author) Wave fluctuations in the system with some Yang-Mills condensates 2016 In: Physics of Atomic Nuclei. - 1063-7788. ; 79:11-12, s. 1502-1504 Journal article (peer-reviewed)abstract Self-consistent dynamics of non-homogeneous fluctuations and homogeneous and isotropic condensate of Yang–Mills fields was investigated in zero, linear and quasilinear approximations over the wave modes in the framework of N = 4 supersymmetric model in Hamilton gauge in quasiclassical theory. The models with SU(2), SU(3) and SU(4) gauge groups were considered. Particle production effect and effect of generation of longitudinal oscillations were obtained.
21.	Severyukhin, A. P., et al. (author) On Statistical Properties of the Gamow–Teller Strength Distribution in 60 Ca 2020 In: Physics of Atomic Nuclei. - 1063-7788. ; 83:2, s. 171-178 Journal article (peer-reviewed)abstract Abstract: The β-decay half-life and the delayed neutron emission of 60Ca are studied within a microscopic model, which is based on the Skyrme interaction T45 to construct single-particle and phonon spaces. We observe a redistribution of the Gamow–Teller strength due to the phonon-phonon coupling and the tensor correlations, considered in the model. For 60Sc, the spin-parity of the ground state is found to be 1+. We predict that the half-life of 60Ca is 0.3 ms, while the total probabilities of the βxn emission is 6.1%. To elucidate the obtained results, the random matrix theory has been applied to analyse the statistical properties of the $$1^{+}$$ spectrum populated in the β-decay. We found a remarkable agreement between the GT strength distribution, obtained within the microscopic approach, and the ones, generated by means of the random coupling between the one- and two-phonon configurations.
22.	Severyukhin, A. P., et al. (author) Random matrix analysis of the monopole strength distribution in 208Pb 2016 In: Physics of Atomic Nuclei. - 1063-7788. ; 79:6, s. 835-841 Journal article (peer-reviewed)abstract We study statistical properties of the 0+ spectrum of 208Pb in the energy region Ex ≤ 20 MeV. We use the Skyrme interaction SLy4 as our model Hamiltonian to create a single-particle spectrum and to analyze excited states. The finite-rank separable approximation for the particle–hole interaction enables us to perform the calculations in large configuration spaces. We show that while the position of the monopole resonance centroid is determined by one-phonon excitations of 0+, the phonon–phonon coupling is crucial for the description of the strength distribution of the 0+ spectrum. In fact, this coupling has an impact on the spectral rigidity Δ3(L) which is shifted towards the random matrix limit of the Gaussian orthogonal ensembles.
23.	Shukla, A., et al. (author) Systematic study of bubble nuclei in relativistic mean field model 2016 In: Physics of Atomic Nuclei. - 1063-7788. ; 79:1, s. 11-20 Journal article (peer-reviewed)abstract We have theoretically studied potential bubble nuclei (20,22O, 34,36Si, and 46Ar), which are experimentally accessible and have attracted several studies in the recent past. Relativistic mean field is employed in conjunction with the NL–SH parameter set. Our results show that among the possible candidates, 22Oand 34Si may be the most prominent candidates, showing significant depletion of density at the center, which could be verified experimentally in the near future with some of the experiments underway.

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