2,204 research outputs found
AS MANY LANGUAGES YOU KNOW, SO MANY INDIVIDUALS YOU ARE (interview with V. Moiseev)
No full textAs many languages you know, so many individuals you are (interview with V. Moiseev).</p
Numerical methods and time-dependent physical models for the design and diagnostic of pulsed-dc magnetrons
No full textPulsed DC operation of magnetrons is a relatively new sputtering technique that significantly improves the properties of deposited layers. The understanding and control of phenomena taking place during pulsed DC sputtering requires new time-resolved methods of investigation.
This thesis presents a comprehensive development of new methods for magnetron design and time-resolved plasma diagnostic, based on Monte Carlo simulations and timeresolved plasma physical models derived for a pulsed DC opposed target magnetron discharge with rectangular geometry.
The numerical methods have been developed and benchmarked by the author through extensive numerical experiments. A representative set of application examples is included. The time-resolved physical models for the pulse-on and pulse-off time discharge are based on the experimental data obtained by the author, which are presented as a basis for the interpretation.
The experimental data are obtained using new time-dependent diagnostic methods combining: I-V characteristics and waveforms, time and space-resolved Optical Emission Spectroscopy (OES) and time and space-resolved Ion Energy Spectra (IBS).
The following original algorithms and new time-resolved plasma diagnostic methods arc
presented:
• Algorithm and method for Monte Carlo simulation of ion transport in the magnetron discharge, based on an original non-Runge-Kutta routine developed for calculating charged particles’ trajectories in complex, position dependent, magnetic and electric fields. The Monte Carlo simulation is used for evaluating the intensity of the pre-sheath electric field through calculations of the travel time to targets of Ar ions. The time-scale for the sputtering and selfsputtering processes is also evaluated.
A new method for time-resolved plasma diagnostic in pulsed DC discharges based on time and space-resolved OES using an acousto-optic spectrometer. The described method indicates the applicability conditions for electron temperature evaluations based on timeresolved OES. the procedure and interpretation of results. Based on time and space-resolved OES evaluations of electron temperatures, a model of the physical phenomena taking place in the pulsed DC discharge during the pulse-on time is developed.
A new method for time-resolved analysis of the Ion Energy Spectra at the substrate region in pulsed DC discharges using a mass-energy analyser. Experimental results and data analysis are presented and an original physical model for plasma behaviour during the pulse-off time is developed, explaining the mechanism for the observed increase in the ion flux and energy at substrate during pulsed DC discharges. The described model explains for the first time the above effects and allows the control of the ion flux and energy at the substrate from the choice of the pulsed DC duty cycle.
The developed plasma models and time-resolved diagnostic methods are discussed for nonferromagnetic(copper) and ferromagnetic (iron) targets and the observations are correlated in order to infer a global understanding of phenomena taking place in the pulsed DC discharge and at the substrate region
Kinematics in Seyfert Galaxies for testing the activity interaction relation
No full textWhile it is largely demonstrated that interaction can trigger activity, it is not yet possible to estabilish whether there is a one-to-one relation between activity and interaction. Indeed the results of the statistical studies that show an excess of physical companions among Seyfert galaxies are still controversial. In this poster we present our project of a systematic investigation of the global kinematical properties of a sample of nearby (z < 0.03) isolated active and non active galaxies aimed at unveiling features caused by past interactions. We show preliminary results about two active galaxies of our sample, NGC 6300 and Mrk 1157
Astronomy Reports V. 47, I. 05
No full textAstronomy Reports -- May 2003
Volume 47, Issue 5, pp. 357-442
Minimum Velocity Dispersion in Stable Stellar Disks. Numerical Simulations
A. V. Khoperskov, A. V. Zasov, and N. V. Tyurina
pp. 357-376 Full Text: PDF (2093 kB)
Spectroscopy of RC Sources
V. L. Afanas'ev, S. N. Dodonov, A. V. Moiseev, O. V. Verkhodanov, A. I. Kopylov, Yu. N. Pariiskii, N. S. Soboleva, A. V. Temirova, O. P. Zhelenkova, and W. M. Goss
pp. 377-385 Full Text: PDF (927 kB)
Wolf–Rayet Stars, Black Holes, and Gamma-Ray Bursters in Close Binaries
A. V. Tutukov and A. M. Cherepashchuk
pp. 386-400 Full Text: PDF (250 kB)
Population Synthesis of Rapidly Rotating Main-Sequence Stars with Companions
N. V. Raguzova
pp. 401-412 Full Text: PDF (191 kB)
The Radio Pulsar J0205+6449 in the Supernova Remnant 3C 58
V. M. Malofeev, I. F. Malov, O. I. Malov, and A. P. Glushak
pp. 413-421 Full Text: PDF (173 kB)
Sodium Abundances in Stellar Atmospheres with Differing Metallicities
T. V. Mishenina, V. V. Kovtyukh, S. A. Korotin, and C. Soubiran
pp. 422-429 Full Text: PDF (165 kB)
Broad-band Multicolor Photometry and Polarimetry of Spotted Stars
I. Yu. Alekseev
pp. 430-442 Full Text: PDF (234 kB)Archived web conten
Astronomy Letters, V. 30, I. 12
No full textAstronomy Letters -- December 2004
Volume 30, Issue 12, pp. 803-868
A Hydrodynamic Model for Asymmetric Explosions of Rapidly Rotating Collapsing Supernovae with a Toroidal Atmosphere
V. S. Imshennik and K. V. Manukovskii
pp. 803-815 Full Text: PDF (391 kB)
The Maximum Energy and Spectra of Cosmic Rays Accelerated in Active Galactic Nuclei
A. V. Uryson
pp. 816-823 Full Text: PDF (359 kB)
Broadband Observations of the Transient X-ray Pulsar SAX J2103.5+4545
E. V. Filippova, A. A. Lutovinov, P. E. Shtykovsky, M. G. Revnivtsev, R. A. Burenin, V. A. Aref'ev, M. N. Pavlinsky, and R. A. Sunyaev
pp. 824-833 Full Text: PDF (321 kB)
Optical Spectra and Redshifts of Radio Sources from the Zelenchuk Survey
V. R. Amirkhanyan, V. L. Afanas'ev, S. N. Dodonov, A. V. Moiseev, and V. P. Mikhailov
pp. 834-842 Full Text: PDF (216 kB)
Study of the Weakly Magnetic Star HD 116656
Yu. V. Glagolevskij, V. V. Leushin, and G. A. Chuntonov
pp. 843-847 Full Text: PDF (170 kB)
Astrometric Control of the Inertiality of the Hipparcos Catalog
V. V. Bobylev
pp. 848-853 Full Text: PDF (156 kB)
Effects of Stellar Wind, Dynamical Friction, and Star Mergers on the Dynamical Evolution of Multiple Stars
A. V. Rubinov, A. V. Petrova, and V. V. Orlov
pp. 854-862 Full Text: PDF (194 kB)
Unidentified Cometary Emission Lines as the Photoluminescence of Frozen Hydrocarbon Particles
I. A. Simonia
pp. 863-868 Full Text: PDF (144 kB)Archived web conten
Astronomy Letters, V. 31, I. 03
No full textAstronomy Letters -- March 2005
Volume 31, Issue 3, pp. 147-219
Constraints on the Photon Charge from Observations of Extragalactic Sources
V. V. Kobychev and S. B. Popov
pp. 147-151 Full Text: PDF (150 kB)
Global Properties of Nearby Galaxies in Various Environments
I. D. Karachentsev and A. V. Kasparova
pp. 152-159 Full Text: PDF (356 kB)
The Gas Content in Galactic Disks: Correlation with Kinematics
A. V. Zasov and A. A. Smirnova
pp. 160-170 Full Text: PDF (366 kB)
Parameters of the Spiral Structure of the Galaxy from Data on Open Star Clusters
M. E. Popova and A. V. Loktin
pp. 171-178 Full Text: PDF (217 kB)
Interaction of the Supernova Remnant HB3 with the Ambient Interstellar Gas
I. V. Gosachinskii
pp. 179-185 Full Text: PDF (254 kB)
Strong Cosmic-Ray Scattering in an Anisotropic Random Magnetic Field
Yu. P. Mel'nikov and I. N. Toptygin
pp. 186-193 Full Text: PDF (192 kB)
The SCORPIO Universal Focal Reducer of the 6-m Telescope
V. L. Afanasiev and A. V. Moiseev
pp. 194-204 Full Text: PDF (476 kB)
Moments of Inertia and the Chandlerian Period for Two- and Three-Layer Models of the Galilean Satellite Io
V. N. Zharkov and A. L. Sobisevich
pp. 205-212 Full Text: PDF (198 kB)
Analysis of the Neighborhood of the 2 : 1 Resonance in the Equal-Mass Three-Body Problem
A. I. Martynova, V. V. Orlov, and L. L. Sokolov
pp. 213-219 Full Text: PDF (310 kB)Archived web conten
Astronomy Letters, V. 30, I. 09
No full textAstronomy Letters -- September 2004
Volume 30, Issue 9, pp. 583-655
NGC 7468: A Galaxy with an Inner Polar Disk
L. V. Shalyapina, A. V. Moiseev, V. A. Yakovleva, V. A. Hagen-Thorn, and O. Yu. Barsunova
pp. 583-592 Full Text: PDF (340 kB)
Stellar Velocity Dispersion and Mass Estimation for Galactic Disks
A. V. Zasov, A. V. Khoperskov, and N. V. Tyurina
pp. 593-602 Full Text: PDF (237 kB)
Natural Spectral Bandwidth of Electron Cyclotron Maser Emission
G. D. Fleishman
pp. 603-614 Full Text: PDF (435 kB)
Disk Precession and Quasi-Periodic Brightness Oscillations of V603 Aql in 2001–2002
V. Suleimanov, I. Bikmaev, K. Belyakov, N. Sakhibullin, G. Zhukov, Z. Aslan, U. Kiziloglu, and I. Khamitov
pp. 615-629 Full Text: PDF (527 kB)
Occultations of Stars Brighter Than 15m by the Largest Trans-Neptunian Objects in 2004–2014
D. V. Denissenko
pp. 630-633 Full Text: PDF (133 kB)
Equation of State under Nuclear Statistical Equilibrium Conditions
D. K. Nadyozhin and A. V. Yudin
pp. 634-646 Full Text: PDF (731 kB)
Fission and the r-Process: Competition between Neutron-Induced and Beta-Delayed Fission
I. V. Panov and F.-K. Thielemann
pp. 647-655 Full Text: PDF (371 kB)Archived web conten
Astronomy Letters, V. 28, I. 11
No full textAstronomy Letters -- November 2002
Volume 28, Issue 11, pp. 721-792
Studies of the Quasar OH 471
N. S. Nesterov and A. E. Volvach
pp. 721-726 Full Text: PDF (246 kB)
Polarization Spectra of Synchrotron Radiation and the Plasma Composition of Relativistic Jets
V. V. Zheleznyakov and S. A. Koryagin
pp. 727-744 Full Text: PDF (394 kB)
X-ray Emission from Accretion Disks in Active Galactic Nuclei
V. F. Suleimanov, K. K. Ghosh, R. A. Austin, and B. D. Ramsey
pp. 745-754 Full Text: PDF (246 kB)
Two-Dimensional Spectroscopy of Double-Barred Galaxies
A. V. Moiseev
pp. 755-768 Full Text: PDF (636 kB)
Pulsar Magnetic Field for an Infinitely Conductive Accretion Disk
N. R. Sibgatullin and T. A. Doroshenko
pp. 769-772 Full Text: PDF (131 kB)
The Spectroscopic and Interferometric Orbit of Gliese 150.2
Yu. Yu. Balega, A. A. Tokovinin, E. A. Pluzhnik, and G. Weigelt
pp. 773-777 Full Text: PDF (144 kB)
Haro's Star (PG 1444+236): A Hot Subdwarf of the Galactic Halo?
V. P. Arkhipova, N. P. Ikonnikova, G. V. Komissarova, and V. F. Esipov
pp. 778-782 Full Text: PDF (177 kB)
Radial Oscillations of Coronal Loops and Microwave Radiation from Solar Flares
Yu. G. Kopylova, A. V. Stepanov, and Yu. T. Tsap
pp. 783-791 Full Text: PDF (228 kB)
ERRATA
Erratum: "Orbital Evolution of Saturn's New Outer Satellites and Their Classification" [Astronomy Letters 27, 455 (2001)]
M. A. Vashkov'yak
p. 792 Full Text: PDF (58 kB)Archived web conten
Astronomy Letters, V. 26, I. 03
No full textAstronomy Letters -- March 2000
Volume 26, Issue 3, pp. 129-197
Spectroscopy of Candidate Metal-Deficient Galaxies with the 6-m Telescope
A. Yu. Kniazev, S. A. Pustilnik, A. V. Ugryumov, and T. F. Kniazeva
pp. 129-143 Full Text: PDF (176 kB)
A Model for the Molecular Accretion Disk and H2O Maser in the Nucleus of the Galaxy NGC 4258
N. S. Babkovskaya and D. A. Varshalovich
pp. 144-152 Full Text: PDF (126 kB)
A Giant Bipolar Shell around the WO Star in the Galaxy IC 1613: Structure and Kinematics
V. L. Afanas'ev, T. A. Lozinskaya, A. V. Moiseev, and E. Blanton
pp. 153-161 Full Text: PDF (312 kB)
Evolution of the Symbiotic Star AS 338 after Its Strong Outburst in 1983
V. F. Esipov, E. A. Kolotilov, J. Mikolajewska, U. Munari, A. A. Tatarnikova, A. M. Tatarnikov, T. Tomov, and B. F. Yudin
pp. 162-176 Full Text: PDF (279 kB)
Doppler–Zeeman Mapping of the Rapidly Rotating Magnetic CP Star HD 37776
V. L. Khokhlova, D. V. Vasilchenko, V. V. Stepanov, and I. I. Romanyuk
pp. 177-191 Full Text: PDF (304 kB)
Mesostructure of the Solar Granulation
H. I. Abdussamatov
pp. 192-197 Full Text: PDF (764 kB)Archived web conten
The Narimanov-Moiseev multimodal analysis of nonlinear sloshing in circular conical tanks
No full textThe chapter reports mathematical aspects of the Narimanov–Moiseev multimodal modelling for the liquid sloshing in rigid circular conical tanks, which perform small-magnitude oscillatory motions with the forcing frequency close to the lowest natural sloshing frequency. To derive the corresponding nonlinear modal system (of ordinary differential equations), we introduce an infinite set of the sloshing-related generalised coordinates governing the free-surface elevation but the velocity potential is posed as a Fourier series by the natural sloshing modes where the time-depending coefficients are treated as the generalised velocities. The employed approximate natural sloshing modes exactly satisfy both the Laplace equation and the zero-Neumann boundary condition on the wetted tank walls. The Lukovsky non-conformal mapping technique transforms the inner (conical) tank (physical) domain to an artificial upright circular cylinder, for which the single-valued representation of the free surface is possible. Occurrence of secondary resonances for the V-shaped truncated conical tanks is evaluated. The Narimanov–Moiseev modal equations allow for deriving an analytical steady-state (periodic) solution, whose stability is studied. The latter procedure is illustrated for the case of longitudinal harmonic excitations. Standing (planar) waves and swirling as well as irregular sloshing (chaos) are established in certain frequency ranges. The corresponding amplitude response curves are drawn and extensively discussed
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