Перегляд за автором "Kovtun, G.P."

Сортувати за: Порядок: Результатів:

  • 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 ...
  • High pure substances for astrophysical research 
    Kovtun, G.P. (Вопросы атомной науки и техники, 2020)
    The features of the application of high-purity substances for studying rare nuclear events in astrophysics, in particular double beta decay, are considered. It was noted that for such studies, the special underground ...
  • High-pure zinc for growing Zn⁸²Se scintillation crystals 
    Kovtun, G.P.; Shcherban, A.P.; Solopikhin, D.A.; Virych, V.D.; Gorbenko, Yu.V. (Вопросы атомной науки и техники, 2020)
    A process has been developed to produce high-purity granular zinc for growing Zn⁸²Se scintillation crystals designed to study the neutrinoless double beta decay (0ν2β) of the selenium isotope ⁸²Se in the CUPID-0 experiment. ...
  • Influence of Zr-Fe getter filter on Cd and Zn deep refining of interstitial impurities 
    Kondrik, A.I.; Kovtun, G.P.; Shcherban’, A.P.; Solopikhin, D.A. (Вопросы атомной науки и техники, 2014)
    The paper presents the analytical and experimental studies of the process of cadmium and zinc refinement of interstitial impurities in a vacuum using a getter filter of Zr-Fe alloy. The thermodynamic analysis of reduction ...
  • Longitudinal Ultrasound Velocity and Attenuation in Isotopically Enriched Cadmium 
    Bulatov, A.S.; Kovtun, G.P.; Klochko, V.S.; Korniets, A.V.; Solopikhin, D.A.; Shcherban, A.P. (Металлофизика и новейшие технологии, 2018)
    The results of the acoustic-properties’ study of high-purity (>99.999%) cadmium enriched to 66.4% with the isotope ¹⁰⁶Cd and to 82.2% with the isotope ¹¹⁶Cd are presented for the temperature range of 77–300 K. Isotopic ...
  • Production of high-purity zinc single crystals by vertical directed crystallization method 
    Shcherban, A.P.; Kovtun, G.P.; Solopikhin, D.A.; Gorbenko, Yu.V.; Rudycheva, T.Yu.; Malykhin, D.G.; Kolodiy, I.V.; Virych, V.D. (Вопросы атомной науки и техники, 2020)
    A seedless process has been developed to produce high-purity Zn single crystals by the method of vertical directed crystallization from a melt. The output of a single crystal structure is from 60 to 80%. Crystals with ...
  • Production of isotopes ¹⁸⁴Re, ¹⁸⁶Re and ¹⁸⁸Re at linear electron accelerators of NSC KIPT 
    Dovbnya, A.N.; Dikii, N.P.; Zadvornyi, A.S.; Kovtun, G.P.; Torgovkin, A.V.; Shramenko, B.I. (Вопросы атомной науки и техники, 2001)
    This paper presents the preliminary results on determining the values of specific activity of radionuclides ¹⁸⁴Re, ¹⁸⁶Re and ¹⁸⁸Re. Irradiation of Re targets of a natural isotope composition with gamma-quanta and neutrons ...
  • Production of radiopure natural and isotopically enriched cadmium and zinc for low background scintillators 
    Kovtun, G.P.; Shcherban', A.P.; Solopikhin, D.A.; Virich, V.D.; Zelenskaja, V.I.; Boiko, R.S.; Danevich, F.A.; Kudovbenko, V.M.; Nagorny, S.S. (Functional Materials, 2011)
  • To the issue of the ultimate purification of metals 
    Kovtun, G.P.; Solopikhin, D.A.; Shcherban, A.P. (Вопросы атомной науки и техники, 2022)
    The paper considers issues related to the ultimate content of impurity elements in metals in the processes of their refining by evaporation and distillation in vacuum, zone recrystallization and electromigration. It is ...
  • Еffects of cross rolling and stress relaxation on texture of Zr-2.5%Nb plates 
    Grytsyna, V.M.; Malykhin, D.G.; Yurkova, T.S.; Kovtun, K.V.; Chernyayeva, T.P.; Kovtun, G.P.; Voyevodin, V.N. (Вопросы атомной науки и техники, 2018)
    An effect of cold rolling on texture and the Kearns’ texture parameter (TP) of Zr-2.5%Nb alloy plates, made by straightening the rings of the Ø15.0×1.5 mm tube, has been investigated by the X-ray method of inverse pole ...