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Перегляд Вопросы атомной науки и техники, 2009, № 5 за назвою

Репозиторій DSpace/Manakin

Перегляд Вопросы атомной науки и техники, 2009, № 5 за назвою

Сортувати за: Порядок: Результатів:

  • Generation of MeV -energy protons in WWER reactor core 
    Gann, A.V.; Gann, V.V. (Вопросы атомной науки и техники, 2009)
    The spectrum of fast protons, generated by fast neutrons of WWER-1000 reactor core in water, has been calculated using the Monte Carlo method. The main mechanism of fast proton generation in the moderator is found to ...
  • Investigation of the astrophysical ³⁶S(p,γ) ³⁷Cl reaction AT Ep=1975...2190 keV 
    Vodin, A.N.; Ushakov, I.V.; Khomyakov, G.K.; Tuller, G.E.; Korda, L.P.; Shapoval, I.A.; Tertichnyi, A.V. (Вопросы атомной науки и техники, 2009)
    The ³⁶S(p,γ) ³⁷Cl reaction was investigated in the proton energy range Ep=1975-2190 keV. The observed resonance strengths were evaluated. The γ-decay schemes of the resonances at Ep=2037, 2058, 2069, 2080, 2122 and 2165 ...
  • Isomer ratios of photonuclear reaction products on silver and indium isotopes for bremsstrahlung energies above 35 MeV 
    Bezshyyko, O.A.; Dovbnya, A.N.; Golinka-Bezshyyko, L.O.; Kadenko, I.M.; Kulakov, I.S.; Kushnir, V.A.; Mitrochenko, V.V.; Olejnik, S.N.; Tuller, G.E.; Vodin, A.N. (Вопросы атомной науки и техники, 2009)
    Isomer ratios were obtained for nuclei 104m,gAg and 110m,gIn-products of reactions 107Ag(γ,3n)104m,gAg and 113In(γ,3n)110m,gIn after bremsstrahlung irradiation with maximum energies 35 and 36 MeV , respectively. ...
  • Measurement of the efficiency of iodine and iodine methyl vapors absorption from the ventilated airflow 
    Kolobrodov, V.G.; Sokolenko, V.I.; Khazhmuradov, M.A. (Вопросы атомной науки и техники, 2009)
    Facility for measurement of the efficiency of the iodine and iodine methyl vapors adsorbtion from the ventilated air flux is described. Different methods used for measurement of the adsorbtion filters cleaning coefficients ...
  • Novel modes of vacuum discharge in magnetic field as the base for effective ion generation 
    Cherenshchykov, S A. (Вопросы атомной науки и техники, 2009)
    New properties of vacuum discharges in magnetic field with unconventional discharge gaps at low pressure up to high vacuum are briefly described. Both single- and multi-charge ion sources may be developed on basis of such ...
  • Numerical computation of incoherent bremsstrahlung from fast electrons in single crystals 
    Shul’ga, N.F.; Syshchenko, V.V.; Tarnovsky, A.I. (Вопросы атомной науки и техники, 2009)
    The incoherent bremsstrahlung of fast electrons in crystal is caused by thermal spread of atoms from their equilibrium positions in the lattice. Its intensity manifests substantial orientation dependence under angles of ...
  • On possibility of separation of ²³⁹Pu and ²⁴⁰Pu contributions in emergency plutonium fallout of Chernobyl accident origin 
    Vodin, A.N.; Olejnik, S.N.; Rudak, E.A.; Ushakov, I.V.; Yachnik, O.I. (Вопросы атомной науки и техники, 2009)
    The experiment-calculated method for separation of total α-activities of plutonium isotopes A(²³⁹Pu+²⁴⁰Pu) on partial activities A(²³⁹Pu) and A(²⁴⁰Pu) in emergency fallout of Chernobyl accident origin is developed.
  • On separation of vacuum volumes on the path of an electron beam 
    Kasilov, V.I.; Buki, A.Yu. (Вопросы атомной науки и техники, 2009)
    The problem of separation by a thin foil of vacuum volumes located on the path of an electron beam is considered. It is shown that in the case of the 300 MeV electron LINAC being under reconstruction, the vacuum separation ...
  • Performance analysis of 30 MeV electron linac with a new injector system 
    Gokov, S.P.; Makhnenko, L.A.; Khodak, I.V.; Shopen, O.A. (Вопросы атомной науки и техники, 2009)
    The present paper deals with the problems of 30 MeV electron linear accelerator (LINAC-30) upgrading to attain optimum beam spectral characteristics. As one of the LINAC-30 upgrading variants, consideration has been ...
  • Possibility of 99mT c production at neutron generator 
    Dovbnya, A.N.; Kuplennikov, E.L.; Tsymba, V.A.; Krasil’nikov, V.V. (Вопросы атомной науки и техники, 2009)
    Possibility of application of the neutron generator with intensity of a thermal neutrons flux 10¹² n · cm⁻² · s⁻¹ for 99mT c production is considered. Estimations are made on the base of ⁹⁸Mo(n, γ) ⁹⁹Mo → 99mT c nuclear ...
  • Procedure of nanodimensional amorphous-microcrystalline structure formation by radiation in single crystal silicon 
    Dovbnya, A.N.; Yefimov, V.P.; Abyzov, A.S.; Rybka, A.V.; Zakutin, V.V.; Reshetnyak, N.G.; Blinkin, A.A.; Romas’ko, V.P. (Вопросы атомной науки и техники, 2009)
    Quantum structures with enhanced electric conductivity have been formed in a single-crystal silicon matrix. An array of quantum filaments improves the collection of low-mobility charge carriers in the emitter structure ...
  • Quantum-consistent superstring models in four dimensional space-time 
    Nurmagambetov, A.J. (Вопросы атомной науки и техники, 2009)
    Extra space-time dimensions are predicted by String theory. However, up to date there are not any experimental signals in favor of their existence. It forces to search for consistent string theory formulations in four ...
  • Radiation processing of inhomogeneous objects at the 300 MeV electron linear accelerator 
    Demeshko, O.A.; Kochetov, S.S.; Mahnenko, L.A.; Melnitsky, I.V.; Shopen, O.A. (Вопросы атомной науки и техники, 2009)
    Comparison is made between the calculated and experimental doses absorbed by complex density-inhomogeneous objects during their radiation processing. The process of fast electron passage through the object and depth ...
  • Research complex linac-300 upgrade project and the lines of nuclear research 
    Buki, A.Yu.; Dovbnya, A.N.; Gokov, S.P.; Kasilov, V.I.; Kochetov, S.S.; Kushnir, V.A.; Mitrochenko, V.V.; Makhnenko, L.A.; Makhnenko, P.L.; Nikitina, T.F.; Shevchenko, N.G.; Shopen, O.A. (Вопросы атомной науки и техники, 2009)
    The paper describes the problems of upgrading the research complex LINAC-300 and the program of physical studies expected to be performed at it. The acceleration complex LINAC-300 includes three electron beam ejection ...
  • Stabilization of nano-sized structures in the volume of single-crystalline silicon for photoconverters 
    Dovbnya, A.N.; Yefimov, V.P.; Abyzov, A.S.; Rybka, A.V.; Bereznyak, E.P.; Zakutin, V.V.; Reshetnyak, N.G.; Blinkin, A.A.; Romas’ko, V.P.; Gabelkov, S.V.; Tarasov, R.V. (Вопросы атомной науки и техники, 2009)
    The paper considers the possibilities of stabilization of microstructures created in the latent tracks in single-crystalline silicon by multicharged ions from the nuclear fragments formed as a result of heavy element ...
  • The dynamics of element content in patients with lung cancer during radiotherapy 
    Dikiy, N.P.; Lyashko, Yu.V.; Medvedeva, E.P.; Borovlev, V.I.; Zabolotny, V.D.; Medvedev, D.V.; Pilipenko, N.I.; Starenky, V.P.; Suhina, E.N. (Вопросы атомной науки и техники, 2009)
    Determination of the element contents in the biological samples (blood, serum of blood, hair) of patients with the diagnosis of lung cancer III degree is carried out during beam therapy. The method of PIXE excited by ...
  • The mathematical model for decay curve of the nuclei-delayed neutron precursors in experiment at a pulsed electron linear accelerator 
    Buki, A.Yu.; Gokov, S.P.; Demeshko, O.A.; Kasilov, V.I.; Kokhnyuk, K.S.; Kochetov, S.S.; Mel’nitsky, I.V.; Semisalov, I.L.; Khomich, A.A.; Shopen, O.A. (Вопросы атомной науки и техники, 2009)
    On the basis of the notion about six groups of nuclei as delayed neutron precursors, radioactive decay laws and the pulsed mode of accelerator operation, a relationship has been derived to describe the decay curve of ...
  • The nonlinear theory of the electromagnetic field excitation in orbitron 
    Kirichenko, Yu.V.; Onishchenko, I.N. (Вопросы атомной науки и техники, 2009)
    The nonlinear theory of electromagnetic waves generation in orbitron is developed. The set of the equations including the equations of field excitation and the equations of 2-dimential motion is constructed and numerically ...
  • To the phase dynamics of relativistic electron bunches at plasma wakefield excitation 
    Onishchenko, I.N.; Maslov, V.I. (Вопросы атомной науки и техники, 2009)
    Theoretical investigation of influence of radial component of plasma wakefield on phase dynamics of the bunches has been performed. The wakefield is excited in plasma by long sequence of the relativistic electron bunches. ...
  • Two consecutive heterogeneous reactions in two-phase system 
    Kopiychenko, D.Yu.; Mchedlov-Petrossyan, P.O. (Вопросы атомной науки и техники, 2009)
    We consider diffusion of species into a semi-infinite domain, where two consequent reactions take place. The exact self-similar solutions are obtained both for initial absence and presence of the first reaction’s product ...

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