Перегляд за автором "Dovbnya, A.N."

Сортувати за: Порядок: Результатів:

  • Control of UHF energy absorption process by resonance method in a shielded object 
    Dovbnya, A.N.; Yefimov, V.P.; Kramskoy, G.D.; Abyzov, A.S. (Вопросы атомной науки и техники, 2015)
    A research program has been developed to account for effect of transverse electric and magnetic fields on a biological object, reaction control of its dielectric constant change, quality factor and heat loss in UHF range ...
  • Corrosion of irradiated Ni-Mo alloys in sodium fluoride - zirconium melt 
    Azhazha, V.M.; Andriiko, A.A.; Bakai, A.S.; Volkov, S.V.; Devyatkin, S.V.; Dovbnya, A.N.; Lavrinenko, S.D.; Omelchuk, A.A.; Shirokov, B.M.; Shmegera, R.S. (Вопросы атомной науки и техники, 2005)
    The corrosion of nickel-molybdenum alloys and their constituents in a molten eutectic sodium fluoride-zirconium fluoride mixture has been studied by cyclic voltammetry, X-ray analysis, SEM and metallography. The dependence ...
  • Cumulation and acceleration of ions by TW femtosecond laser pulse 
    Balakirev, V.A.; Dovbnya, A.N.; Yegorov, A.M.; Krasnogolovets, M.A.; Onishchenko, I.N.; Onishchenko, N.I.; Povrozin, A.I.; Pristupa, V.I. (Вопросы атомной науки и техники, 2004)
    A new method of ion cumulation and acceleration at three-dimensional compression of plasma in the ”light trap” created in the focal region of the high-power femtosecond laser is theoretically studied. The ”light trap” ...
  • Current control of the electron beam formed in the magnetron gun with a secondary-emission cathode 
    Dovbnya, A.N.; Reshetnyak, N.G.; Zakutin, V.V.; Chertishchev, I.A.; Romasko, V.P.; Dovbnya, N.A. (Вопросы атомной науки и техники, 2013)
    Data are reported on electron beam generation and beam current control in two types of secondary-emission cathode magnetron guns. The influence of the magnetic field value and field distribution on the formation of the ...
  • Design of the target for ⁹⁹Mo prodaction in the electron linear accelerator 
    Pugachev, G.D.; Biller, E.Z.; Dovbnya, A.N.; Pugachev, D.G.; Shestakova, V.S. (Вопросы атомной науки и техники, 1999)
  • Detection of explosives 
    Dovbnya, A.N.; Yegorov, A.M.; Zhuk, V.V.; Pugachev, G.D.; Shapoval, I.I.; Shepelev, A.G. (Вопросы атомной науки и техники, 2006)
    The extensive literature on the methods of detection of explosives under the stationary and field conditions is reviewed. Today, there are hundreds of publications on detectability of explosives by different methods, but ...
  • Determination of isotopic ratio of сalcium by gamma activation analysis and free radical oxidation of lipids in normal and cancerous tissues of thyroid gland 
    Dikiy, N.P.; Dovbnya, A.N.; Меdvedeva, Е.P.; Khizhnyak, N.A.; Uvarov, V.L.; Khizhnyak, A.A.; Krasnoselsky, N.V. (Вопросы атомной науки и техники, 2000)
    Chemiluminescence and gamma activation analysis was used to determine the isotopic ratio of calcium in normal, non-malignant and cancerous tissues of thyroid gland. This result was used for diagnostics of cancerous thyroid ...
  • Development of mathematical and experimental model of neutron radiography set up 
    Batiy, V.G.; Dovbnya, A.N.; Kuzmenko, V.A.; Prokhorets, I.M.; Prokhorets, S.I.; Slabospitskiy, R.P.; Khazhmuradov, M.A.; Shevchenko, N.G.; Shmatko, E.S. (Вопросы атомной науки и техники, 2003)
    Perspectives of mathematical modeling usage for neutron radiography set ups development are considered. Results of the calculation of neutron passing through plane polyethylene layer are given.
  • Development of new trends in applied nuclear physics with the use of high-energy braking radiation 
    Dikiy, N.P.; Dovbnya, A.N.; Uvarov, V.L. (Вопросы атомной науки и техники, 2003)
    A review is given about investigation in nuclear medicine, atomic energetics (Chernobyl problem including), geology etc. that carried out in the NSC KIPT mainly during last decade on the basis of home made electron linacs.
  • Effect of alternating magnetic field on creep of irradiated vessel steel 15Kh2NMFA 
    Dovbnya, A.N.; Sokolenko, V.I.; Karaseva, E.V.; Mats, A.V.; Mats, V.A.; Savchuk, E.S. (Вопросы атомной науки и техники, 2014)
    The influence of alternating magnetic field on the creep at 600 K of irradiated vessel steel 15Kh2NMFA was studied. Structural investigations of the steel specimens after various actions were carried out. It is shown that ...
  • Effect of generation of multiple-frequency RF power in the O-type tube 
    Dovbnya, A.N.; Tur, Yu.D.; Rodyakin, V.E.; Sandalov, A.N. (Вопросы атомной науки и техники, 2008)
    The necessity to create the RF sources operating in the multifrequency mode is supported by the proposals concerning the suppression of the emittance growth generated inside the RF gun and the possibility to increase the ...
  • Electron irradiation of the material samples of new generation nuclear reactors in the supercritical water convection loop 
    Bakai, A.S.; Boriskin, V.N.; Bratchenko, M.I.; Biller, E.Z.; Bytenko, P.A.; Bocharov, V.A.; Vereshchaka, V.N.; Dovbnya, A.N.; Duldya, S.V.; Gorenko, Yu.V.; Kovalev, G.G.; Momot, V.A.; Repihov, O.A.; Romanovsky, S.K.; Savchenko, A.N.; Seleznev, V.V.; Solodovnikov, V.I.; Titov, V.I.; Torgovkin, A.V.; Handak, V.V.; Shelepko, S.V.; Tcebenko, G.N. (Вопросы атомной науки и техники, 2013)
    The design of the Supercritical Water Convection Loop with an irradiation chamber is described [1]. The plant makes possible to carry out simulation corrosion tests of potential structural materials for Generation IV ...
  • Electron linacs in NSC KIPT: R&D and application 
    Antipov, K.I.; Ayzatsky, M.I.; Akchurin, Yu.I.; Boriskin, V.N.; Beloglasov, V.I.; Biller, E.Z.; Demidov, N.V.; Dikiy, N.P.; Dovbnya, A.N.; Dovbush, L.S.; Gurin, V.A.; Karasyov, S.P.; Kushnir, V.A.; Kosmin, V.A.; Myakushko, L.K.; Mitrochenko, V.V.; Nikitina, T.F.; Opanasenko, A.N.; Pugachev, G.D.; Repikhov, O.A.; Reprintsev, L.V.; Reshetnyak, N.G.; Popenko, V.A.; Seleznev, V.V.; Shramenko, B.I.; Shendrik, V.A.; Stepin, D.L.; Tarasov, G.E.; Tolstoy, A.E.; Tur, Yu.D.; Uvarov, V.L.; Zadvorny, A.S.; Zakutin, V.V.; Zlunitsyn, E.S.; Zykov, A.I. (Вопросы атомной науки и техники, 2001)
    A review is given about electron linacs of NSC KIPT and their some applications for research of radiation effects in reactor materials, channeling, plasma-beam interactions, geology (gamma-activation analysis of ore samples), ...
  • Estimation of medical radionuclide yields in photonuclear production 
    Dikiy, N.P.; Dovbnya, A.N.; Nikiforov, V.I.; Uvarov, V.L. (Вопросы атомной науки и техники, 2006)
    The present paper reports the results from computer simulation of the processes of radionuclide production, namely, Sc-47, Co-57, Cu-67, Mo-99, Pd-103, In-111, W-181 and Ir-192. Consideration was given to a simplified ...
  • Estimation OF Os, Ir, Sc, In isotope production at electron linear accelerators 
    Dovbnya, A.N.; Kovtun, G.P.; Torgovkin, A.V.; Uvarov, V.L.; Shramenko, B.I. (Вопросы атомной науки и техники, 2006)
    Preliminary data on the production of medical radionuclides ⁴⁷Sc, ¹¹⁴In, ¹⁹²Ir and ¹⁹¹Os, ¹⁹¹mOs by the photonuclear method are reported. The targets were irradiated in the bremsstrahlung beam of the NSC KIPT accelerator ...
  • Estimation of radiation risks under photonuclear production of 67Cu and 99Mo isotopes 
    Ayzatskiy, M.I.; Dovbnya, A.N.; Tenishev, A.Eh.; Torgovkin, A.V.; Uvarov, V.L.; Shevchenko, V.A.; Shramenko, B.I.; Ehst, D. (2010)
    The activated bremsstrahlung converter and isotopic target are the main sources of radiation hazard in the isotope production at electron accelerators. In experiments at the NSC KIPT accelerators KUT-30 and LU-40m, intended ...
  • Estimation of the absorbed doses of synthesized cisplatin with ¹⁹⁵mPt in various organs of animals 
    Dikiy, N.P.; Dovbnya, A.N.; Lyashko, Y.V.; Medvedeva, E.P.; Medvedev, D.V.; Uvarov, V.L.; Gritsan, L.D.; Onishchenko, N.I. (Вопросы атомной науки и техники, 2008)
    195mPt has been obtained in reaction ¹⁹⁷Au(g,np)¹⁹⁵mPt on the electron linear accelerator with energy 40 MeV and current 10 mA. To produce ¹⁹⁵mPt from a target of gold the extractor such as Kuchera-Shtoly was needed. The ...
  • Estimations of high-temperature diffusion in Chernobyl’s concrete construction 
    Dikiy, N.P.; Dedik, A.N.; Dovbnya, A.N.; Uvarov, V.L. (Вопросы атомной науки и техники, 2005)
    The content of isotopes Ti, Ni, Zr, Cs and U in the cores, which was taken from the concrete construction of ChAPS, was studied by the gamma-activation analysis. It has been developed a numerical model to analyze heat ...
  • Excitation of isomeric low-lying level of nucleus ¹⁸¹Ta by relativistic electrons 
    Dikiy, N.P.; Dovbnya, A.N.; Lyashko, Yu.V.; Nikiforov, V.I.; Uvarov, V.L.; Fedorets, I.D. (Вопросы атомной науки и техники, 2013)
    Influence on efficiency of exciting of the E1-level ¹⁸¹Ta with energy 6.24 keV of neutron-capture reaction and photonuclear processes by means of the processes caused by passage of powerful electron beam through tantalum ...
  • Experimental cross-section evaluation data for ⁷Be photoproduction by ¹²C, ¹⁴N, ¹⁶O nuclei in the energy range between 40…90 MeV 
    Dovbnya, A.N.; Deyev, O.S.; Kushnir, V.A.; Malyshevsky, V.S.; Malykhina, T.V.; Mitrochenko, V.V.; Perezhogin, S.A.; Torgovkin, A.V.; Fomin, G.V.; Shramenko, B.I. (Вопросы атомной науки и техники, 2013)
    The ⁷Be isotope produced in the upper atmosphere under the action of cosmic radiation is an important factor in population radiation load. A correct determination of the radiation dose coming from this isotope calls for ...