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Wyszukujesz frazę "V." wg kryterium: Autor


Tytuł:
Reconsideration of thermonuclear possibilities of Z-pinches
Autorzy:
Vikhrev, V. V.
Powiązania:
https://bibliotekanauki.pl/articles/147474.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
fusion burn wave
neutrons
plasma focus
Z-pinch
Opis:
The paper considers the Z-pinch as the basis for future thermonuclear fusion reactors. Experiments on Z-pinches always concern small and high temperature and a high density plasma regions that arise spontaneously in the Z-pinch neck. A burn wave might be initiated in the Z-pinch column if in this small plasma region a Lawson-like condition is fulfilled.
Źródło:
Nukleonika; 2001, 46, suppl. 1; 9-12
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-organization of high current-carrying plasmas : dynamics of forming toroidal plasmoids in plasma columns and tubes
Autorzy:
Fadeev, V. M.
Khautiev, E. Y.
Vikhrev, V. V.
Nikulin, V. Y.
Tarakanov, V. P.
Powiązania:
https://bibliotekanauki.pl/articles/148465.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
plasma dynamics
plasma focus
plasma structures
self-organization
Z-pinch
θ-pinch
Opis:
In the report the dynamics of the Toroidal Plasmoids formation in a Cavity of the Neck (TPCN) of plasma columns and tubes is described. The study was carried out within the MHD (magnetohydrodynamics) frames and by using the particles method. It was shown that in the fast forming neck of plasma pinch, some observed orthogonal to the current structures could be H-filaments (at the equilibrium state they are θ-pinches). These filaments are supported due to the interaction of the induced (secondary) current with magnetic field of the Z-pinch.
Źródło:
Nukleonika; 2001, 46, suppl. 1; 13-16
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recent developments of plasma - based technologies for medicine and industry
Autorzy:
Taran, V. S.
Garkusha, I. E.
Krasnyj, V. V.
Powiązania:
https://bibliotekanauki.pl/articles/146418.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
discharge
plasma
ozone sterilizer
coating
surface modification
Opis:
The paper presents an overview of experimental results of various plasma applications based on atmospheric and vacuum discharges. A multifunctional low-temperature ozone sterilizer with a ultrasonic cavitation and dielectric barrier discharge generated at atmospheric pressure as well as ozonators with a diaphragm for water treatment and disinfection of medical tools have been developed. Particular attention is paid to the investigation of arc, high-frequency and non-self maintained discharges generated in vacuum for coatings application. Some aspects of pulsed plasma treatment, surface modification and hardening due to nitriding, oxidation and carburization are discussed.
Źródło:
Nukleonika; 2012, 57, 2; 277-282
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method of impurity diagnostics in dense plasma systems
Autorzy:
Tsarenko, A. V.
Chebotarev, V. V.
Sadowski, M. J.
Tereshin, V. I.
Powiązania:
https://bibliotekanauki.pl/articles/146854.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
impurity diagnostics
local thermodynamical equilibrium
plasma accelerator
plasma-target interaction
spectral line
Opis:
The analysis of a plasma impurity composition in many plasma systems (such as coaxial plasma accelerators, magnetic- plasma compressors, plasma-focus devices, and others) is of great importance for plasma physics. In this work we have proposed a new spectral method for the determination of impurity concentrations in relation to the concentration of the main plasma (made of hydrogen in our case). This technique can be used e.g. for diagnostics of a peripheral zone in Plasma-Focus (PF) discharges, where LTE conditions must be fulfilled. Advantages of this method in comparison with other methods, as well as possible errors, are considered and discussed.
Źródło:
Nukleonika; 2001, 46, suppl. 1; 37-40
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On possible formulation of problems of a Dense Plasma Focus used in material sciences
Autorzy:
Gribkov, V.
Powiązania:
https://bibliotekanauki.pl/articles/146787.pdf
Data publikacji:
2000
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
cumulative plasma streams
dense plasma focus (DPF)
electron beam
ion beam
material sciences
neutrons
X-rays
Opis:
The paper describes various possibilities at can be given by the use of dense plasma focus (DPF) device in material sciences. Main distinguishing features of such a device – availability of several different types of hard radiation and its high power flux density – determine the niche of applications of this type devices in the field. Some directions of materials investigation and treatment, which can be developed at present time, are discussed.
Źródło:
Nukleonika; 2000, 45, 3; 149-153
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strangeness conservation and pair correlations of neutral kaons with close momenta in inclusive processes
Autorzy:
Lyuboshitz, V.
Powiązania:
https://bibliotekanauki.pl/articles/148469.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
correlations
strangeness
neutral K mesons
identity
final-state interaction
Opis:
The phenomenological structure of inclusive cross sections of the production of two neutral K-mesons in collisions of hadrons and nuclei is investigated taking into account the strangeness conservation in strong and electromagnetic interactions. The relations describing the dependence of the correlations of two short-lived and two long-lived neutral kaons KS0KS0, KL0KL0 and the correlations of “mixed” pairs KS0KL0 at small relative momenta upon the space-time parameters of the generation region of K0- and (anti)K0-mesons, which involve the contributions of Bose-statistics and S-wave strong final-state interaction, have been obtained. It is shown that under the strangeness conservation the correlation functions of the pairs KS0KS0 and KL0KL0, produced in the same inclusive process, coincide, and the difference between the correlation functions of the pairs KS0KS0 and KS0KL0 is conditioned by the production of the pairs of non-identical neutral kaons K0(anti)K0.
Źródło:
Nukleonika; 2006, 51,suppl.3; 69-72
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quasi-spherical superfast Z-pinch implosion for pellet irradiation
Autorzy:
Smirnov, V. P.
Grabovskii, E. V.
Zakharov, S. V.
Powiązania:
https://bibliotekanauki.pl/articles/146366.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
Z-pinch
Z-pinch implosion
Opis:
New simulation results of the quasi-spherical implosion induced by a 40 MA current pulse are discussed. Results on a quasi-spherical wire array production and some experimental observations of an implosion are presented.
Źródło:
Nukleonika; 2012, 57, 2; 215-219
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of the technique embedded into a Monte Carlo transport system for calculation of photonuclear isotope yield
Autorzy:
Nikiforov, V. I.
Uvarov, V. L.
Powiązania:
https://bibliotekanauki.pl/articles/147914.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
electron accelerator
bremsstrahlung
photonuclear reaction
Monte Carlo (MC) simulation
isotope yield
Opis:
The paper describes two methods that use Monte Carlo transport code for computing the photonuclear isotope yield for arbitrary target activation conditions. One of them is based on a direct simulation of new nuclei generation events (DSE method). The other one involves a step-by-step calculation of isotope microyield along the photon trajectories (SBSM method). The techniques have been realized in the computer codes using the PENELOPE package of 2001, 2006 and 2008 versions. The program benchmarking was performed using experimental data on the activity distributions of 67Cu isotope produced in the 68Zn(gamma,p)67Cu reaction in thick zinc targets. Both approaches have shown to give similar results at an appreciably greater speed of the SBSM method. The results of simulation based on the PENELOPE 2006 and 2008 codes are in excellent agreement with all experimental data. At the same time, the PENELOPE 2001 computations give good agreement with the experimental results for target activation by the electron beam, but in the case of target exposed to bremsstrahlung systematic underestimation of about 15% has been observed.
Źródło:
Nukleonika; 2012, 57, 1; 75-80
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preface
Autorzy:
Gribkov, V.
Powiązania:
https://bibliotekanauki.pl/articles/146782.pdf
Data publikacji:
2000
Wydawca:
Instytut Chemii i Techniki Jądrowej
Źródło:
Nukleonika; 2000, 45, 3; 147-148
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Irradiation of austenitic steel 10Cr12Mn14Ni4AlMo and titanium alloy Ti-Al-V by pulsed streams of fast nitrogen ions and plasma in a dense plasma focus
Autorzy:
Gribkov, V. A.
Pimenov, V. N.
Roschupkin, V. V.
Maslyaev, S. A.
Demina, E. V.
Lyakhovitsky, M. M.
Dubrovsky, A. V.
Sasinovskaya, I. P.
Powiązania:
https://bibliotekanauki.pl/articles/971548.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
radiation
damage
phase transition
nanohardness
dense plasma focus (DPF)
Opis:
Austenitic steel 10Cr12Mn14Ni4AlMo and Ti-4Al-3V alloy were irradiated with nanosecond pulsed nitrogen ion and plasma streams in plasma focus devices. The two different modes of the treatment were applied: high power density (greater-than or equal to 10 8 W/cm2) irradiation with melting of the surface layer and irradiation with power density similar to 10 7 W/cm2 below the melting threshold. Structure and phase changes as well as the mechanisms of modification and hardening of the surface layers of the steel and titanium alloy upon applied irradiation are discussed.
Źródło:
Nukleonika; 2012, 57, 2; 291-295
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic field measurements on PF - 1000 and PF - 3 facilities: current sheath structure and neutron scaling
Autorzy:
Krauz, V. I.
Mitrofanov, K. N.
Scholz, M.
Myalton, V. V.
Paduch, M.
Grabovskii, E. V.
Karpinski, L.
Koidan, V. S.
Vinogradov, V. P.
Vinogradova, Y. V.
Zielinska, E.
Powiązania:
https://bibliotekanauki.pl/articles/147526.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
plasma focus (PF)
magnetic probe
current sheath
neutron scaling
Opis:
The comparative analysis of the magnetic field distribution, the dynamics and structure of the plasma current sheath, and the neutron yield scaling in two largest plasma focus facilities, PF-3 and PF-1000 is done. The power-low dependence of the neutron yield on the current in the imploding plasma sheath has been demonstrated experimentally. For the first time the presence of the Bz magnetic field components is experimentally shown.
Źródło:
Nukleonika; 2012, 57, 2; 201-204
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multichannel calorimeters for measurement of flows of X-ray radiation in the range from 10 up to 200 keV
Autorzy:
Vinogradov, V. P.
Powiązania:
https://bibliotekanauki.pl/articles/148228.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
calorimeter
hard X-ray
plasma focus
Opis:
An 8-channel calorimeter was developed and applied to the Plasma focus facility (PF) with flat geometry of electrodes (Filippov type) for the measurements of a hard X-ray (HXR) radiation yield and its spectral distribution. The calorimeter measures the time-integrated HXR flux for one shot of the PF facility without any additional calibrations. The sensitivity ~10–4 J/cm2 was achieved.
Źródło:
Nukleonika; 2001, 46, suppl. 1; 99-101
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of pulsed plasma accelerators for surface modification
Autorzy:
Tereshin, V.
Chebotarev, V.
Garkusha, I.
Bovda, A.
Powiązania:
https://bibliotekanauki.pl/articles/147534.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
modification
plasma stream
plasma treatment
surface
wear resistance
Opis:
A pulsed coaxial plasma accelerator was utilized in the experiments discussed in this paper. Plasma streams with ion energy up to 2 keV, plasma density 2-3×1014 cm-3, and plasma energy density 5-40 J/cm-2, were generated. Such a plasma was used for the surface modification of different constructional steels. Experimental results on improvement of physical properties of metal surfaces (first of all tribological characteristics), under their irradiation by pulsed plasma streams are presented. Optimization of the treatment process was carried out varying plasma energy flux, plasma density, and energy of ions. It was shown that microhardness of the steel samples, both non-quenched and previously quenched, was increased by several times after plasma irradiation. The main attention was paid to the analysis of wear resistance of the treated material by using different methods of wear tests. The possibility to achieve a sufficient decrease of the wear rate of the treated samples was demonstrated.
Źródło:
Nukleonika; 2001, 46, 1; 27-30
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics of radon and its decay products inside an accumulative chamber
Autorzy:
Yakovleva, V. S.
Powiązania:
https://bibliotekanauki.pl/articles/148846.pdf
Data publikacji:
2010
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
radon
thoron
accumulative chamber
ionizing radiation yield
ion production rate
Opis:
The calculations of radon and its decay products accumulation dynamics inside a chamber designed for measurements of radon flux density from the soil surface were carried out in the present work. Dynamics of alpha-,beta-particles and gamma-ray yields under decay of accumulated radionuclide nuclei was calculated based on the accumulated activity. Ion production rate inside the accumulative chamber due to ionizing radiation of different types was estimated. Thoron and its decay products accumulation regularities inside the accumulative chamber were also estimated and potential effect of thoron on measurement results (if counting regime is used) was analyzed in detail. Dynamic equations of the studied radiation characteristics, their solutions and obtained results analysis are presented.
Źródło:
Nukleonika; 2010, 55, 4; 595-600
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using microwave refraction to determine local inhomogeneities of a rotating plasma
Autorzy:
Martseniuk, Yurii P.
Siusko, Yevhen V.
Kovtun, Yurii V.
Powiązania:
https://bibliotekanauki.pl/articles/2202564.pdf
Data publikacji:
2023
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
horn antenna
inhomogeneities
reflected microwave
reflectometry
refraction
Opis:
To determine the local inhomogeneities of a rotating plasma, the method based on microwave refraction was used. The method is based on spectral and correlation analysis of the refl ected signals from the rotating plasma layer at normal and inclined microwave incidence. This method allowed us to determine local inhomogeneities of plasma electron density, angles of azimuthal displacement of grooves, and its angular frequency of rotation. Using an additional 4th horn antenna, in contrast to previous works, it was possible to fi nd and analyze two regions with azimuthal inhomogeneities in the rotating plasma. Analysis of the refl ected signals shows the presence of four grooves, and the angular frequency of rotation = 1.16 × 104 rad/s was also determined.
Źródło:
Nukleonika; 2023, 68, 1; 19--24
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł

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