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Перегляд Problems of Atomic Science and Technology, 2021, № 3 за датою випуску

Перегляд Problems of Atomic Science and Technology, 2021, № 3 за датою випуску

Результати 1-20 з 28

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Improved fast protection system at high-voltage gas breakdowns for industrial electron accelerators

Bandurov, S.O.; Lozhkin, R.S.; Shyshkin, G.О. (Вопросы атомной науки и техники, 2021)

The article considers the ways to improve the protection system of linear electron accelerators ELV-1 and ELV-2 series on the basis of modern integrated and semiconductor component base. The proposed circuit solutions ...
Study of purification processes of soil contaminated with uranyl nitrate

Mammadov, Kh.F.; Shiraliyeva, H.N.; Mehtiyev, E.I.; Aliyeva-Jabbarly, U.S.; Guliyev, E.I.; Mirzayev, N.A.; Huseynova, A.H. (Вопросы атомной науки и техники, 2021)

The extraction of uranyl nitrate contaminated soil with weak solutions of nitric and hydrochloric acid, caustic sodium and subsequent washing of soil residues with distilled water leads to a more than tenfold decrease in ...
Application of expert systems for determining the size of the sanitary protection zone of a nuclear facility

Barbashev, S.V. (Вопросы атомной науки и техники, 2021)

The dimensions of the sanitary protection zones (SPZ) for nuclear facility (NF) of I and II hazard classes are calculated based on the recommendations of national regulatory documents, taking into account the radiation ...
Mechanisms of morphology death of tumor cell by effect non-radioactive and radioactive ¹⁹⁵ᵐPt-cisplatin

Dikiy, N.P.; Lyashko, Yu.V.; Medvedeva, E.P.; Medvedev, D.V. (Вопросы атомной науки и техники, 2021)

The photonuclear technology of preparation radioactive cisplatin ¹⁹⁵ᵐPt was been developed by the bremsstrahlung from the electron accelerators. In the novel technology, the production of ¹⁹⁵ᵐPt from reaction ¹⁹⁷Au(γ,np)¹⁹⁵ᵐPt ...
Analysis of uranium mobility and concentration process in objects of environment and patients’ kidney stones in Kharkiv region

Dikiy, N.P.; Lisovoy, V.N.; Bereznyak, E.P.; Kolupayev, S.M.; Lyashko, Yu.V.; Medvedeva, E.P.; Medvedev, D.V.; Hodyreva, Y.S. (Вопросы атомной науки и техники, 2021)

The specific activity of ²³⁵U and content of native uranium for the Kharkiv region in drinking water, soil, roots, the leaf of hydrophyte “Pistia stratiotes” and the samples of kidney stones obtained from patients with ...
Analysis of radiation protective properties of polystyrene-based composite materials

Prokhorenko, E.M.; Lytvynenko, V.V.; Zakharchenko, A.A.; Khazhmuradov, M.A.; Sokolov, S.A.; Prokhorenko, T.G.; Ben, A.P. (Вопросы атомной науки и техники, 2021)

Polystyrene-metal composite materials were manufactured. Composite materials are made of polystyrene, which has been reinforced with highly dispersed powder-like aluminum. Tungsten or steel powder was applied as a radiation ...
Production of phosphorus-32 at a neutron generator and it's sedimentary isolation

Azarov, O.I.; Bocharov, V.O.; Dolzhek, M.A.; Stoyanov, O.F.; Tsymbal, V.A. (Вопросы атомной науки и техники, 2021)

Phosphorus-32 is a β-emitter with a maximum energy of 1.7 MeV (such radiation is completely absorbed in a layer of water or biological tissue up to 1 cm thick) and a half-life of 14.29 days can find application in medicine ...
Cross-sections of photonuclear reactions on ⁿᵃᵗMo targets at end-point bremsstrahlung energy up to Eᵧₘₐₓ = 100 MeV

Vodin, A.N.; Deiev, O.S.; Timchenko, I.S.; Olejnik, S.M.; Kushnir, V.A.; Mytrochenko, V.V.; Perezhogin, S.O.; Bocharov, V.O. (Вопросы атомной науки и техники, 2021)

Experiments to determine the yields and bremsstrahlung flux-averaged cross-sections ⟨σ(Еγmax)⟩ of photonuclear reactions on the natural Mo targets were performed on the beam from the electron linear accelerator LUE-40 with ...
Stability of a viscous incompressible conducting liquid layer of a cylindrical shape in an inhomogeneous temperature field and a magnetic field of a vacuum arc current through it

Andrieieva, O.L.; Borts, B.V.; Vanzha, А.F.; Korotkova, I.М.; Tkachenko, V.I. (Вопросы атомной науки и техники, 2021)

Convective mass transfer in a cylindrical viscous incompressible conductive fluid layer in an inhomogeneous temperature field and in the external magnetic field of the vacuum arc current through it is theoretically ...
Calculation of the Molière radius for various configurations of an electromagnetic sampling calorimeter ECaL SPD NICA

Kovtun, V.E.; Malykhina, T.V. (Вопросы атомной науки и техники, 2021)

One of the main tasks of the electromagnetic calorimetry of the SPD setup is effective π⁰-γ separation in the energy range from 50 MeV to 10 GeV. Therefore, the current task is to optimize the design of the module cells ...
Estimation of gross-structure parameters of giant dipole resonance: 1. A method

Uvarov, V.L.; Zakharchenko, A.A. (Вопросы атомной науки и техники, 2021)

Available data on photonuclear cross-sections, both measured experimentally and obtained on the basis of theoretical models, are characterized sometimes by a considerable spread. In work, a simple method for the estimation ...
Determination of the ²³⁴U isotope content in uranium-bearing materials using high-resolution gamma spectrometry

Kutniy, D.V.; Burdeinyi, D.D.; Savchenko, N.N. (Вопросы атомной науки и техники, 2021)

The paper presents an overview of the research into the available non-destructive methods of determining the ²³⁴U isotope content in uranium-bearing materials. An alternative approach to a problem of detector calibration ...
On gas and hydraulic tightness of accelerating sections

Zhiglo, V.F. (Вопросы атомной науки и техники, 2021)

A technique for calculating the required impenetrability of brazing linac accelerating sections cooled by water and for control of their hydraulic tightness based on the total helium leakage rate is given. Three types of ...
Effect of energy leakage on the energy resolution of E.M. sampling calorimeters

Gavrishchuk, O.P.; Kovtun, V.E.; Malykhina, T.V. (Вопросы атомной науки и техники, 2021)

The electromagnetic sampling calorimeters of the SPD experiment (NICA collider) are being investigated by Monte Carlo method. The simulation is used to study in detail the influence of energy leakages from the module on ...
Forward and backward electron yield ratio for α-particle induced emission from different materials

Zhurenko, V.P.; Kononenko, S.I.; Kalantaryan, O.V.; Avotin, S.S.; Rokhmanov, N.Ya. (Вопросы атомной науки и техники, 2021)

In this work, the ratio of forward and backward electron yields for emission induced by the isotropic flux of α-particles from zinc was measured. On the basis of the measured values and experimental data obtained in earlier ...
Investigation of the ¹⁶O(γ, ρ)³H3α reaction at the energies below the meson production threshold

Afanasiev, S.N. (Вопросы атомной науки и техники, 2021)

The reaction ¹⁶O(γ, ρ)³H3α induced by bremsstrahlung photons of endpoint energy Emaxγ = 150 MeV has been studied by the method of a diffusion chamber in a magnetic field. The energy dependence of the total cross section ...
Adjustment of resonance frequency in H-structures accelerating

Vdovin, S.O.; Gusev, Ye.V.; Lobzov, L.D.; Podolayk, O.P.; Shulika, M.G. (Вопросы атомной науки и техники, 2021)

It is necessary to adjust the resonant frequency of the accelerating structures during operation of high-frequency linear accelerators on the H-wave. The deviation of the resonant frequency of the resonator from the ...
Project of a beamline for the NESTOR storage ring linac to provide nuclear physics research

Mytrochenko, V.V.; Perezhogin, S.O.; Kushnir, V.A.; Ganenko, V.B.; Ayzatsky, M.I.; Kovalenko, G.D. (Вопросы атомной науки и техники, 2021)

The results of selfconsistent beam dynamics simulation are presented for the linac of the NESTOR storage ring. Consideration is given to the influence of particle energy change at the output of the electron gun during the ...
Model of finite inhomogeneous cavity chain and approximate methods of its analysis

Ayzatsky, M.I. (Вопросы атомной науки и техники, 2021)

A new approach to the description of an inhomogeneous chain of coupled resonators (inhomogeneous disk waveguides) is proposed. New matrix difference equations based on the technique of coupled integral equations and the ...
Stochastic mechanism of broadening spectral density of synchrotron radiation of relativistic electron

Mazmanishvili, A.S. (Вопросы атомной науки и техники, 2021)

The consideration is based on the study of the spectral profile of the synchrotron radiation (SR) line of a relativistic electron orbiting in a circular orbit in the uniform magnetic field. Fast stochastic fluctuations ...

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Перегляд Problems of Atomic Science and Technology, 2021, № 3 за датою випуску

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Перегляд Problems of Atomic Science and Technology, 2021, № 3 за датою випуску

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