The Journal of Kharkov National University, Vol. 916,
Physical series "NUCLEI, PARTICLES, FIELDS", Issue 3/47/, 2010
Title Page
(25 kB)
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ARTICLES |
V.I. Tkachenko Kelvin-Helmholtz (KH) dissipative instability and its versatile manifestations in the environment (Rus.) |
4 |
N.F. Shul’ga, S.V. Trofymenko, V.V. Syshchenko The space-time evolution of the process of transition radiation by relativistic electron (Rus.) |
23 |
N.F. Shul’ga, V.I. Truten’, V.V. Boyko Scattering of high energy particles in the field of deformed crystalline atomic planes (Rus.) |
42 |
O.V. Dudnik Variations of electron fluxes in the earth radiation belts in may, 2009 due to “STEP-F“ device observations (Rus.) |
56 |
I.L. Semisalov, V.I. Kuprikov, V.V. Pilipenko Descrirtion of the elastic nucleon-nucleus scattering based on the skyrme forces (Rus.) |
67 |
A.Yu. Buki Methods of measuring physical characteristics of partial components of multicomponent samples (Rus.) |
73 |
V.I. Kasilov, A.Yu. Buki, S.P. Gokov, S.S. Kochetov, K.S. Kokhnyuk, L.A. Makhnenko, P.L. Makhnenko, I.V. Mel’nitsky, V.F. Popov, I.L. Semisalov, O.A. Shopen, V.M. Khvastunov Output channel of the electron beam with energies up to 30 MeV for research photo and electronuclear reactions (Rus.) |
78 |
N.I. Ayzatskiy, A.N. Dovbnya, V.V. Zakutin, N.G. Reshetnyak, V.P. Romas’ko, I.A. Chertishcev, T.A. Kovalenko, N.A. Dovbnya, O.M. Utva Forming of electron beam in magnetron gun with secondary-emission cathode using the magnetic system based on permanent magnets (Rus.) |
82 |
V.N. Borysenko, Yu.T. Petrusenko Accumulating and annealing radiation defects in zirconium alloyed by dysprosium and gadolinium (Rus.) |
86 |
R.V. Vovk, Z.F. Nazyrov, A.A. Zavgorodniy, M.A. Obolenskii Effect of high hydrostatic pressure on metal-dielektrik transition and pseudogap in oxygen underdoped Ío1Ba2Cu3O7-δ single crystals (Ukr.) |
90 |
S.F. Dudnik, A.I. Kalinichenko, V.E. Strel’nitskij Influence of grystallite size on thermo- and electro- conductivities of nanodiamond coating (Rus.) |
94 |
I.D. Fedorets, N.P. Khlapova, N.P. Dikiy, A.N. Dovbnya, E.P. Medvedeva, Yu.V. Lyashko, N.S. Lutsay, D.V. Medvedev, V.L. Uvarov Structure and properties of gamma activated nanoparticles of zinc oxide (Rus.) |
100 |
V.G. Kirichenko, V.N. Leonov Componently-selective corrosion of austenitic steels in liquid sodium (Rus.) |
105 |
I.N. Marushchenko, V.M. Karpan, N.A. Azarenkov, P.J. Kelly Influence of interface roughness on spin-dependent tunneling (Rus.) |
111 |
I.S. Guk, S.G. Kononenko, F.A.Peev About possibility manufacturing of the diagnostic medical isotope technetium 99Ì in Ukraine (Rus.) |
117 |
VARIATIONS OF ELECTRON FLUXES IN THE EARTH RADIATION BELTS IN MAY, 2009 DUE TO “STEP-F“ DEVICE OBSERVATIONS
O.V. Dudnik
Full Text : ![](../img/mail.jpg)
Abstract
The analysis of electron flux variations in radiation belts of the Earth in May, 2009, is performed on the base of data obtained from the satellite telescope of electrons and protons STEP-F
as a part of scientific apparatus complex "PHOTON" on board the spacecraft "CORONAS-PHOTON". The temporal connection of particle intensity changes that were detected by the view
cone of the device in the radiation belts at the bases of drift shells with various phases of weak magnetic storm of May, 8, as well as with parameters of high speed solar wind streams
is investigated. The empirical values of electron life time in the outer and inner radiation belts are defined for particles with various energies. The possible dependence of electron life time
in the outer belt on their pitch-angle distribution at fixed energy is discussed.
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KEY WORDS: magnetosphere of the Earth, radiation belts, electrons, pitch-angle distribution, magnetic storm, solar activity, solar wind, Brazil magnetic anomaly, particle acceleration.
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OUTPUT CHANNEL OF THE ELECTRON BEAM WITH ENERGIES UP TO 30 MEV FOR RESEARCH PHOTO AND ELECTRONUCLEAR REACTIONS
V.I. Kasilov, A.Yu. Buki, S.P. Gokov, S.S. Kochetov, K.S. Kokhnyuk, L.A. Makhnenko, P.L. Makhnenko, I.V. Mel’nitsky, V.F. Popov, I.L. Semisalov, O.A. Shopen, V.M. Khvastunov
Full Text : (200 kB, Rus.)
Abstract
The description of the experimental equipment and components produce beams of electrons and photons for the study of photo-and electronuclear reactions in the energy region of giant
resonance are presented. Shows the measured spectra of electrons used in the experiments. The questions of creation a parallel transport system of beam, which will provide a beam of
electrons, satisfy a minimum background, with a spread of energy ~ 1%. Methods for measuring product yields of photo-and electronuclear processes are discussed.
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KEY WORDS: methods of physical measurements, electron, photon, parallel transport system of beam.
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FORMING OF ELECTRON BEAM IN MAGNETRON GUN WITH SECONDARY-EMISSION CATHODE USING THE MAGNETIC SYSTEM BASED ON PERMANENT MAGNETS
N.I. Ayzatskiy, A.N. Dovbnya, V.V. Zakutin, N.G. Reshetnyak, V.P. Romas’ko, I.A. Chertishcev, T.A. Kovalenko, N.A. Dovbnya, O.M. Utva
Full Text : (780 kB, Rus.)
Abstract
The paper presents the results of investigations into the electron beam formation in the magnetron gun using the magnetic system based on the NdFeB permanent annular magnet. Unlike a
magnetic solenoid designed for magnetic-field generation, the system used in the work reported has smaller size and weight, does not require cooling and power supply. A compact magnetron
gun with a secondary-emission cathode has been constructed and different modes of electron beam formation were applied and investigated.
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KEY WORDS: magnetron gun, electron beam, secondary-emission cathode, permanent annular magnets, NdFeB
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STRUCTURE AND PROPERTIES OF GAMMA ACTIVATED NANOPARTICLES OF ZINC OXIDE
I.D. Fedorets, N.P. Khlapova, N.P. Dikiy, A.N. Dovbnya, E.P. Medvedeva, Yu.V. Lyashko, N.S. Lutsay, D.V. Medvedev, V.L. Uvarov
Full Text : (1115 kB, Rus.)
Abstract
Activation of nanoparticles of magnetite is carried out by slowing-down γ - radiation on high-current electronic accelerator in NSC KIPT at energy of electrons 22 MeV and a current 500 μA. The analysis of component-phase structure and state of crystal structure of activated and initial nanoparticles ZnO was carried out by X-ray diffractometry methods. The transformations have
been analysed and it was shown that there were no essential changes in structure of ZnO: activated nanoparticles of magnetite keep monophase state and crystallinity of initial state. To study influence nanoparticles ZnO on adenocarcinoma Ehrlich cells It was demonstrated, that nanoparticles ZnO can be used as effect factor for destruction of adenocarcinoma Ehrlich cells.
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KEY WORDS: nanoparticles oxide zinc, electron accelerator, gamma-activation, X-ray diffractometry, biological sample.
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COMPONENTLY-SELECTIVE CORROSION OF AUSTENITIC STEELS IN LIQUID SODIUM
V.G. Kirichenko, V.N. Leonov
Full Text : (330 kB, Rus.)
Abstract
Results of examination structurally-phase changes in austenitic steels 12Õ18Í10Ò and 08Õ16Í15Ì3Á after staying in the environment of liquid sodium are presented. It is discovered
componently-selective corrosion of austenitic steels in the liquid sodium, caused by the selective character of washing away of components of steels at staying in sodium. It leads to
structurally-phase transformations (including to γ→α transition in surface layer), porosity, and probably to reduction of mechanical characteristics of a steel. Local chemical inhomogenety
shaped in the course of corrosion of near-surface layer is one of the main reasons of interdependent processes γ→α transformation, development of porosity, origin and growth of other phases.
At corrosion in sodium the modification of a local environment of nuclei 57Fe in near-surface layer is observed at processing γ→α transformation at the expense of concentration reduction in a
composition of near-surface layer not only nickel, but also chromium. Increase of corrosion resistance depends on stability of austenitic phase concerning γ→α transition and reduction of
tendency to pore formation.
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KEY WORDS: componently-selective corrosion, austenitic steels, phase transformations, sodium, liquid-metal coolant
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