DSpace Repository

Recently added

Система будет остановлена для регулярного обслуживания. Пожалуйста, сохраните рабочие данные и выйдите из системы.

Physics: Recent submissions

  • EMISSION OF NOBLE GASES BINARY MIXTURES UNDER EXCITATION BY THE PRODUCTS OF THE 6 LI (n, a) 3 H NUCLEAR REACTION 
    Samarkhanov, Kuanysh; Khasenov, Mendykhan; Batyrbekov, Erlan; Kenzhina, Inesh; Sapatayev, Yerzhan; Bochkov, Vadim (Hindawi Science and Technology of Nuclear Installations, 2020)
    'e luminescence of Kr-Xe, Ar-Kr, and Ar-Xe mixtures was studied in the spectral range 300–970 nm when excited by 6 Li (n, α) 3 H nuclear reaction products in the core of a nuclear reactor. Lithium was deposited on walls ...
  • QUASI-HARMONIC OSCILLATIONS OF CHARGED PARTICLES IN STATIC AXIALLY SYMMETRIC SPACE-TIMES IMMERSED IN A UNIFORM MAGNETIC FIELD 
    Benavides-Gallego, Carlos A.; Abdujabbarov, Ahmadjon; Malafarina, Daniele; Bambi, Cosimo (arxiv, 2020)
    In continuation of our previous study [Phys. Rev. D 99 (2019) 4, 044012], we investigate the motion of charged particles in the γ-metric. We provide some examples of curled trajectories in the equatorial plane and escape ...
  • HAMILTONIAN FORMULATION OF DUST CLOUD COLLAPSE 
    Kwidzinski, Nick; Malafarina, Daniele; Ostrowski, Jan J.; Piechocki, Włodzimierz; Schmitz, Tim (arxiv, 2020-04)
    We consider the gravitational collapse of a self-gravitating spherical dust cloud in the Hamiltonian formalism. We address both homogeneous and inhomogeneous cases. Our novel derivation of the Hamiltonian of the system ...
  • LIGHT TRAPPING BY ARBITRARILY THIN CAVITIES 
    Zhumabek, Tilek; Valagiannopoulos, Constantinos (PHYSICAL REVIEW RESEARCH, 2020)
    Simple plasmonic multilayers are found to perfectly trap electromagnetic waves around specific incidence directions, regardless of the sample thickness. Such a counterintuitive feature is acquired via increasing un boundedly ...
  • ACOUSTIC WAVE GENERATION IN COLLAPSING MASSIVE STARS WITH CONVECTIVE SHELLS 
    Abdikamalov, Ernazar; Foglizzo, Thierry (Monthly Notices of the Royal Astronomical Society, 2020)
    The convection that takes place in the innermost shells of massive stars plays an important role in the formation of core-collapse supernova explosions. Upon encountering the supernova shock, additional turbulence is ...
  • ACCRETION DISK LUMINOSITY FOR BLACK HOLES SURROUNDED BY DARK MATTER WITH ANISOTROPIC PRESSURE 
    Kurmanov, E.; Boshkayev, K.; Giambò, R.; Konysbayev, T.; Luongo, O.; Malafarina, D.; Quevedo, H. (The Astrophysical Journal, 2022)
    We investigate the luminosity of the accretion disk of a static black hole surrounded by dark matter with anisotropic pressure. We calculate all basic orbital parameters of test particles in the accretion disk, such as ...
  • LARGE-SCALE MAGNETIC FIELD IN THE MONOCEROS OB 1 EAST MOLECULAR CLOUD 
    Alina, D.; Montillaud, J.; Hu, Y.; Lazarian, A.; Ristorcelli, I.; Abdikamalov, E.; Sagynbayeva, S.; Juvela, M.; Liu, T.; Carrière, J.-S. (Astronomy & Astrophysics, 2022)
    Context. The role of large-scale magnetic fields in the evolution of star-forming regions remains elusive. Its investigation requires the observational characterization of well-constrained molecular clouds. The Monoceros ...
  • DEPTH-RESOLVED THERMAL CONDUCTIVITY AND DAMAGE IN SWIFT HEAVY ION IRRADIATED METAL OXIDES 
    Abdullaev, Azat; Koshkinbayeva, Ainur; Chauhanb, Vinay; Nurekeyev, Zhangatay; O’Connell, Jacques; Janse van Vuuren, Arno; Skuratov, Vladimir; Khafizov, Marat; Utegulov, Zhandos N. (Journal of Nuclear Materials, 2022)
    We investigated thermal transport in swift heavy ion (SHI) irradiated insulating single crystalline oxide materials: yttrium aluminum garnet- Y3Al5O12 (YAG), sapphire (Al2O3), zinc oxide (ZnO) and magnesium oxide (MgO) ...
  • STABILITY OF ACTIVE PHOTONIC METASURFACE PAIRS 
    Valagiannopoulos, Constantinos; Tretyakov, Sergei A (New Journal of Physics, 2021-11-26)
    Adding active components to a photonic device may dramatically enrich and improve its performance but, at the same time, creates the risk of instability, namely, occurrence of unwanted self-oscillations. Stability ...
  • DETECTING THE EVENT OF A SINGLE PHOTON LOSS ON QUANTUM SIGNALS 
    Mandilara, A.; Balkybek, Y.; Akulin, V. M. (Journal of Physics B Atomic Molecular and Optical Physics, 2021-05)
    We design a scheme for detecting a single photon loss from multi-modal quantum signals transmitted via a fiber or in free space. This consists of a special type of unitary coding transformation, the parity controlled-squeezing, ...
  • PHOTONIC MEMORY WITH NONLINEAR PLASMONIC NANOTUBES 
    Abrashuly, Aivar; Valagiannopoulos, Constantinos (APL Materials, 2021-10-12)
    Photonic memory devices are capable of giving different outputs for the same present input, judging from the input’s past values and, in this way, “remembering” what happened the previous times. Nonlinear cylindrical ...
  • ELECTRICAL AND PHOTOELECTRIC PROPERTIES OF HETEROJUNCTIONS MOOX/N-CD1-XZNXTE 
    Solovan, Mykhailo M.; Mostovyi, Andrii I.; Parkhomenko, Hryhorii P.; Brus, Viktor V.; Maryanchuk, Pavlo D. (East European Journal of Physics, 2021-02)
    The paper presents the results of studies of the optical and electrical properties of МоOx/n-Cd1-хZnхTe semiconductor heterojunctions made by depositing MoOx films on a pre-polished surface of n-Cd1-хZnхTe plates (5 × 5 × ...
  • INFLUENCE OF NEUTRON IRRADIATION AND AGEING ON BEHAVIOR OF SAV-1 REACTOR ALLOY 
    Tsay, K.V.; Rofman, O.V.; Kudryashov, V.V.; Yarovchuk, A.V.; Maksimkin, O.P. (Nuclear Engineering and Technology, 2021-10)
    This study observed the effect of neutron irradiation and ageing on the microstructure, hardness, and corrosion resistance of SAV-1 (Al–Mg–Si) alloy. The investigated material was irradiated with neutrons to fluences of ...
  • ANOMALOUS DIFFRACTION OF MATTER WAVES WITH MINIMAL QUANTUM METASURFACES 
    Valagiannopoulos, Constantinos (EPJ Quantum Technol., 2021-02-06)
    In the last few years, there is a huge upsurge in the number of closed deals regarding quantum technologies for materials, computing, communication and instrumentation. Such a trend has inevitably affected the research ...
  • PHOTOTHERMAL EFFECTS AND HEAT CONDUCTION IN NANOGRANULAR SILICON FILMS 
    Kurbanova, Bayan A.; Mussabek, Gauhar K.; Timoshenko, Viktor Y.; Lysenko, Vladimir; Utegulov, Zhandos N. (MDPI, 2021-09-13)
    We present results on the photothermal (PT) and heat conductive properties of nanogranular silicon (Si) films synthesized by evaporation of colloidal droplets (drop-casting) of 100 ± 50 nm-sized crystalline Si nanoparticles ...
  • EFFECTS OF RECOMBINATION ORDER ON OPEN-CIRCUIT VOLTAGE DECAY MEASUREMENTS OF ORGANIC AND PEROVSKITE SOLAR CELLS 
    Vollbrecht, Joachim; Brus, Viktor V. (MDPI AG, 2021-08-06)
    Non-geminate recombination, as one of the most relevant loss mechanisms in organic and perovskite solar cells, deserves special attention in research efforts to further increase device performance. It can be subdivided ...
  • LIGHT AND AIRY: A SIMPLE SOLUTION FOR RELATIVISTIC QUANTUM ACCELERATION RADIATION 
    Good, Michael R. R.; Linder, Eric V. (Universe, 2021-03-05)
    We study the quantum radiation of particle production by vacuum from an ultra-relativistic moving mirror (dynamical Casimir effect) solution that allows (possibly for the first time) analytically calculable time evolution ...
  • ELECTRICAL CONDUCTIVITY ENHANCEMENT OF TRANSPARENT SILVER NANOWIRE FILMS ON TEMPERATURE-SENSITIVE FLEXIBLE SUBSTRATES USING INTENSE PULSED ION BEAM 
    Kaikanov, Marat; Kemelbay, Aidar; Amanzhulov, Bauyrzhan; Demeuova, Gulzat; Akhtanova, Gulnur; Bozheyev, Farabi; Tikhonov, Alexander (IOP Publishing Ltd, 2021-01-11)
    Silver nanowire (AgNW) networks have attracted particular attention as transparent conductive films (TCF) due to their high conductivity, flexibility, transparency, and large scale processing compatible synthesis. As-prepared ...
  • NANOSCALE THERMAL TRANSPORT AND ELASTIC PROPERTIES OF LITHIATED AMORPHOUS SI THIN FILMS 
    Abdullaev, Azat; Mukanova, Aliya; Yakupov, Talgat A.; Mentbayeva, Almagul; Bakenov, Zhumabay; Utegulov, Zhandos N. (Materials Today: Proceedings, 2020-01-16)
    Silicon is the heart of modern electronics and due to it is high theoretical storage capacity it also attracted much attention as a possible anode material for the next generation Li-ion batteries. Heat conduction is one ...
  • CDTE X/Γ-RAY DETECTORS WITH DIFFERENT CONTACT MATERIALS 
    Gnatyuk, Volodymyr; Maslyanchuk, Olena; Solovan, Mykhailo; Brus, Viktor; Aoki, Toru (MDPI AG, 2021-05-18)
    Different contact materials and optimization of techniques of their depositions expand the possibilities to obtain high performance room temperature CdTe-based X/γ-ray detectors. The heterostructures with ohmic (MoOx) and ...