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Найдено документов в текущей БД: 43

    Translational disequilibrium induced by resonance radiation pressure in a mixture of gases
[Text] : статья / I.V. Krasnov // JETP. - 1983. - Vol. 58, № 5. - p. 909-914


Полный текст на сайте журнала

Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Краснов, Игорь Васильевич

    Induced plasma oscillations when resonance ions are coherently perturbed by light
[Text] : статья / I.V. Krasnov // JETP. - 1987. - Vol. 65, № 4. - p. 708-714


Полный текст на сайте журнала

Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Краснов, Игорь Васильевич

    Resonance laser actions as an efficient method for control of the gas and plasma states
[Текст] : статья / A. P. Gavrilyuk [и др.] // Russian Physics Journal. - 1999. - Vol. 42, № 8

Аннотация: The results obtained by the authors in studies of the mechanical action of resonance laser light on gas and plasma are briefly reviewed.

Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Gavrilyuk, A.P.; Гаврилюк, Анатолий Петрович; Krasnov, I.V.; Краснов, Игорь Васильевич; Polyutov, S.P.; Shaparev, N.Ya.; Шапарев, Николай Якимович
Engineering, Electrical & Electronic
S53

    Reduced Absorption of Resonance Radiation in Expanding Gas
/ N.Y. Shaparev // 2012 INTERNATIONAL CONFERENCE ON OPTOELECTRONICS AND MICROELECTRONICS (ICOM) : IEEE COMPUTER SOC, 2012. - International Conference on Optoelectronics and Microelectronics (ICOM) (AUG 23-25, 2012, Changchun, PEOPLES R CHINA). - pp. 342-345. - Cited References: 14 . - ISBN 978-1-4673-2639-1
РУБ Engineering, Electrical & Electronic + Nanoscience & Nanotechnology + Optics
Рубрики:
SCORPII
Кл.слова (ненормированные):
line shapes -- widths -- emission -- absorption -- scattering of electromagnetic radiationr -- radiative processes -- solar radiation

Аннотация: The paper deals with absorption of resonance and continuum radiation in an expanding gaseous sphere. For self-similar expansion, a probability of radiation to be transmitted is studied depending on the velocity gradient and optical thickness. It is shown that an optically thick medium grows thinner with the velocity gradient.

РИНЦ


Доп.точки доступа:
Шапарев, Николай Якимович

    The spectrum of resonant laser radiation to decelerate ions in an expanding ultracold plasma
/ N.Y. Shaparev // Laser Physics Letters. - 2013. - Vol. 10, Is. 8. - Ст. 085501, DOI 10.1088/1612-2011/10/8/085501 . - ISSN 1612-2011

Аннотация: We analyze the resonance absorption spectrum of ions in an expanding ultracold spherical plasma. It is shown that the spectrum width is controlled by the highest expansion velocity at the sphere boundary. As the expansion velocity grows, the initial optical thickness of the medium decreases and the medium becomes transparent. We suggest broadband laser radiation in the red absorption spectrum of ions be used to decelerate ions in an expanding plasma in order to achieve crystallization. В© 2013 Astro Ltd.

Scopus


Доп.точки доступа:
Shaparev, N.Ya.; Шапарев, Николай Якимович

    Transfer of resonance radiation in an expanding sphere
[Text] / N.I. Kosarev, N.Y. Shaparev // J. Phys. B-At. Mol. Opt. Phys. - 2011. - Vol. 44, Is. 19. - Ст. 195402, DOI 10.1088/0953-4075/44/19/195402. - Cited References: 17 . - ISSN 0953-4075
РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
PLASMAS

Аннотация: Imprisonment of resonant radiation in an expanding sphere on the basis of the numerical solution of the rate balance equation for excited atoms and the transfer resonance radiation equation is investigated. Calculations of the escape factor for sphere at Doppler form of absorption and scattering profiles are executed. The effect of spectral shift of the absorption (emission) profile relative to the stationary one due to expansion of the medium is taken into account for the case when differential motion is described by velocity that varies linearly with the radius. The behaviour of the escape factor for the sphere is compared with the Sobolev theory. The numerical date for time dependence of intensity of afterglow and contour of the spectral line of leaving outside resonance radiation and spatial distribution of the excited atomic concentration are submitted as well.


Доп.точки доступа:
Shaparev, N.Ya.; Шапарев, Николай Якимович; Косарев Н.И.

    Imprisonment dynamics of resonance radiation in gases
[Text] / N.I. Kosarev, N.Y. Shaparev // J. Phys. B-At. Mol. Opt. Phys. - 2011. - Vol. 44, Is. 10. - Ст. 105402, DOI 10.1088/0953-4075/44/10/105402. - Cited References: 9 . - ISSN 0953-4075
РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
ULTRACOLD LASER-PLASMA

Аннотация: Imprisonment of resonant radiation in gases on the basis of the numerical solution of the rate balance equation for the excited atoms and the transfer resonant radiation equation is investigated. Calculations of the escape factor for the slab, cylinder and sphere at Doppler and Lorentz forms of absorption and scattering profiles are executed. Calculation results of the escape factor for the cylinder and slab are compared with Holsten's asymptotical solutions. The numerical data for time dependence of a spectrum, the intensity of resonant radiation and the spatial distribution of the excited atomic concentration in a regime of afterglow are also considered.


Доп.точки доступа:
Shaparev, N.Ya.; Шапарев, Николай Якимович; Косарев Н.И.

    Absorption of resonance radiation in ultracold laser plasma
[Text] / N.I. Kosarev, N.Y. Shaparev // Dokl. Phys. - 2008. - Vol. 53, Is. 8. - pp. 428-430, DOI 10.1134/S1028335808080053. - Cited References: 10 . - ISSN 1028-3358
РУБ Mechanics + Physics, Multidisciplinary
Рубрики:
NEUTRAL PLASMA
   TRAP



Доп.точки доступа:
Shaparev, N.Ya.; Шапарев, Николай Якимович; Косарев Н.И.

    Resonance laser-induced ionisation of sodium vapour taking radiative transfer into account
[Text] / N.I. Kosarev, N.Y. Shaparev // Quantum Electron. - 2006. - Vol. 36, Is. 4. - pp. 369-375, DOI 10.1070/QE2006v036n04ABEH013153. - Cited References: 23 . - ISSN 1063-7818
РУБ Engineering, Electrical & Electronic + Physics, Applied

Аннотация: The problem of ionisation of atomic sodium in the field of resonance laser radiation is numerically solved taking radiative transfer into account. Seed electrons are produced due to the mechanism of associative ionisation, then they gain energy in superelastic processes (collisions of the second kind) and initiate the avalanche ionisation of the medium by electron impact. We studied the effect of secondary radiation on the laser pulse propagation upon competition between the ionising and quenching electron collisions with excited atoms, on the kinetics of ionisation-induced vapour bleaching, and the plasma channel expansion in the form of a halo.


Доп.точки доступа:
Shaparev, N.Ya.; Шапарев, Николай Якимович; Косарев Н.И.

    Analysis of rotational motion of material microstructure particles by equations of the Cosserat elasticity theory
[Text] / O.V. Sadovskaya, V.M. Sadovskii // Acoust. Phys. - 2010. - Vol. 56, Is. 6. - P942-950, DOI 10.1134/S1063771010060199. - Cited References: 19. - This study was supported by the Russian Foundation for Basic Research (project no. 08-01-00148), Complex Fundamental Research Program no. 2 of the Presidium of the Russian Academy of Sciences, and Siberian Division of the Russian Academy of Sciences (Interdisciplinary Integration Project no. 40). . - 9. - ISSN 1063-7710
РУБ Acoustics
Рубрики:
WAVES
   PROPAGATION

Аннотация: Oscillatory processes in media with microstructure under the action of concentrated impulse and time-periodic perturbations are analyzed within the Cosserat elasticity theory. According to the results of computations, such media are characterized by a resonance frequency equal to the frequency of natural oscillations of particle rotational motion. This frequency is a phenomenological parameter of a material. It was established that the oscillatory rotation of particles changes for monotone rotational motion with increasing intensity of shear strains.


Доп.точки доступа:
Sadovskaya, O.V.; Садовская, Оксана Викторовна; Sadovskii, V.M.; Садовский, Владимир Михайлович

    On the acoustic approximation of thermomechanical model of a liquid crystal
/ V. M. Sadovskii // Proceedings of XLI International Summer School–Conference APM 2013. - 2013. - P493-500

Аннотация: Based on the equations of dynamics of a structurally inhomogeneous elastic medium taking into account the rotational degrees of freedom of the particles of microstructure, a simplified mathematical model is worked out for description of the wave motion in nematic liquid crystals under the influence of weak mechanical and thermal perturbations. It is shown that in the case of plane strain the shear stress in such a medium satisfies the Klein–Gordon equation, describing the oscillatory nature of particles rotation. The results of numerical computations shows that the natural frequency of rotational motion of the particles, determined by this equation, is the resonance characteristic of a material, and it is independent of the size of a sample and of the loading conditions.

Полный текст

Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Садовский, Владимир Михайлович

    Absorption and scattering of resonance laser radiation in ultracold optical dense plasma
[Text] / N. I. Kosarev, N. J. Shaparev // J. Phys. B-At. Mol. Opt. Phys. - 2008. - Vol. 41, Is. 23. - Ст. 235701, DOI 10.1088/0953-4075/41/23/235701. - Cited References: 12 . - ISSN 0953-4075
РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
NEUTRAL PLASMAS
   TRAP

Аннотация: The problem of absorption and scattering of resonance laser radiation in ultracold optical dense plasma has been studied numerically. The frequency asymmetry of scattering and nonlinear absorption of light is predicted.


Доп.точки доступа:
Shaparev, N.Ya.; Шапарев, Николай Якимович

    Manifestation of the gas translational nonequilibrium in a resonance electromagnetic field
/ I. V. Krasnov, N. Ya. Shaparev // Optics Communications. - 1980. - Vol. 34, Is. 1. - P68-70 . - ISSN 0030-4018

Кл.слова (ненормированные):
GASES

Аннотация: The translational nonequilibrium of the resonance impure gas in a field of a traveling electromagnetic wave produced by both the radiation pressure and the difference in cross-sections of elastic collisions between the excited- and ground-state atoms and a buffer gas has been studied. В© 1980.

Scopus

Держатели документа:
Computing Centre, the Siberian Branch, the USSR, Krasnoyarsk, USSR 660049, Russian Federation
ИВМ СО РАН

Доп.точки доступа:
Krasnov, I.V.; Краснов, Игорь Васильевич; Shaparev, N.Ya.; Шапарев, Николай Якимович
Optics
H99

    Ionization-induced gas transparency in the resonance electromagnetic field
/ A. P. Gavriluk, N. Ya. Shaparev // Opt. Commun. - 1981. - Vol. 39, Is. 6. - P379-382, DOI 10.1016/0030-4018(81)90227-3. - Cited References: 11 . - ISSN 0030-4018
РУБ Optics

Кл.слова (ненормированные):
ELECTROMAGNETIC WAVES - Propagation -- GASES - Ionization -- PLASMAS

Аннотация: The propagation of the resonance electromagnetic wave accompanied by gas ionization is considered. Plasma is formed through initial associative processes followed by the action of electrons which gain energy when colliding with the excited atoms. The change in the nature of the radiation propagation results from both a decrease in the ground state atom density and an increase in the probability of the upper state atom de-excitation. Concrete estimates are made for cesium. The degree of gas ionization and the wave propagation velocity of transparency are calculated. В© 1981.

WOS,
Scopus

Держатели документа:
Computing Center of the Siberian Branch of the USSR, Academy of Sciences, Krasnoyarsk, USSR, 660049
ИВМ СО РАН

Доп.точки доступа:
GAVRILUK, A.P.; Гаврилюк, Анатолий Петрович; Shaparev, N.Ya.; Шапарев, Николай Якимович

    Non-selective external force in the presence of selective action of radiation on atoms. Cooling-effects and analogues
/ A. P. Gavriluk, I. V. Krasnov, D. V. Sizikh // Optics Communications. - 1987. - Vol. 62, Is. 1. - P21-24 . - ISSN 0030-4018
Аннотация: The present work suggests a new effective method of resonance radiation cooling when a small additional force is applied. A mathematical analogy has been found which allows this method as well as the frequency-sweep techniques to be analyzed. This makes it possible to determine scan rates which do not agree with the generally accepted concept. A new role of quantum fluctuations which may result in a loss of cooling stability is shown. В© 1987.

Scopus

Держатели документа:
Computer Centre, SB AS USSR, Krasnoyarsk, USSR
ИВМ СО РАН

Доп.точки доступа:
Gavriluk, A.P.; Гаврилюк, Анатолий Петрович; Krasnov, I.V.; Краснов, Игорь Васильевич; Sizikh, D.V.

    Analytical assessments of electron temperature and kinetics of gas ionization in the resonance field
/ A. P. Gavrilyuk // Teplofizika Vysokikh Temperatur. - 1995. - Vol. 33, Is. 1. - P144-146 . - ISSN 0040-3644

Кл.слова (ненормированные):
Electrons -- Equations of state of gases -- Laser beams -- Plasma heating -- Resonance -- Temperature measurement -- Electron temperature -- Resonance field -- Ionization of gases

Аннотация: The paper assesses coefficients and rates of ionization caused by an electron shock of atomic gas. It is meant that this gas is excited by resonance radiation and that ionization rate depends on the tune out of radiation frequency from the center of absorption line. It has been shown that in the central part of the line, where saturation is implemented, the coefficient depends only on characteristics of the resonance transition and ionization potential of the atom, and that the growth of electron concentration in time is exponential. When the far end of the line is tuned out, saturation disappears and dynamics of concentration growth becomes nonlinear.

Scopus

Держатели документа:
VTs SO RAN, Krasnoyarsk, Russian Federation
ИВМ СО РАН

Доп.точки доступа:
Gavrilyuk, A.P.; Гаврилюк, Анатолий Петрович

    Spectroscopic manifestations of the catastrophe of the resonant optical bunching of ion velocities
/ I. V. Krasnov, N. Ya. Shaparev // Optics and Spectroscopy (English translation of Optika i Spektroskopiya). - 1996. - Vol. 80, Is. 4. - P577-580 . - ISSN 0030-400X

Аннотация: Collective ion interactions are shown to considerably change the usual physical picture of bunching of the resonant particle velocities by the force of spontaneous light pressure. This manifests itself in the direct destruction of the process of bunching the ion velocities and the appearance of an overthermal structure in the spectrum of plasma noises. In this case, the spectral density of noises as a function of the phase velocity of plasma waves proves to be a mapping of the optical absorption spectrum and resolves the sub-Doppler structure of the optical resonance.

Scopus

Держатели документа:
Computer Center, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, 660062, Russian Federation
ИВМ СО РАН

Доп.точки доступа:
Krasnov, I.V.; Краснов, Игорь Васильевич; Shaparev, N.Ya.; Шапарев, Николай Якимович

    Laser cooling and Wigner crystallization of rarefied plasma
[Text] / A. P. Gavrilyuk, I. V. Krasnov, N. Y. Shaparev ; ed. IV Krasnov // 11TH INTERNATIONAL VAVILOV CONFERENCE ON NONLINEAR OPTICS. Ser. PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) : SPIE-INT SOC OPTICAL ENGINEERING, 1998. - Vol. 3485: 11th International Vavilov Conference on Nonlinear Optics (JUN 24-28, 1997, NOVOSIBIRSK, RUSSIA). - P142-150, DOI 10.1117/12.328228. - Cited References: 0 . - ISBN 0277-786X. - ISBN 0-8194-2943-0
РУБ Optics

Кл.слова (ненормированные):
cooling -- trapping -- plasma -- optical resonance -- crystallization

Аннотация: For the first time the optical method of electron-ion plasma cooling, trapping anti crystallizing (ou microscale) due to laser radiation action an plasma with resonant ions is proposed.

WOS

Держатели документа:
RAS, Siberian Branch, Krasnoyarsk Comp Ctr, Krasnoyarsk, Russia
ИВМ СО РАН

Доп.точки доступа:
Gavrilyuk, A.P.; Гаврилюк, Анатолий Петрович; Krasnov, I.V.; Краснов, Игорь Васильевич; Shaparev, N.Ya.; Шапарев, Николай Якимович; Krasnov, IV \ed.\

    Reduction of the resonance radiation absorption in expanding gas
/ N. Y. Shaparev // Dokl. Phys. - 2013. - Vol. 58, Is. 2. - P. 45-47, DOI 10.1134/S1028335813020031. - Cited References: 6 . - ISSN 1028-3358
РУБ Mechanics + Physics, Multidisciplinary
Рубрики:
PLASMAS


Держатели документа:
Russian Acad Sci, Inst Computat Modeling, Siberian Branch, Krasnoyarsk 660036, Russia
ИВМ СО РАН

Доп.точки доступа:
Шапарев, Николай Якимович

    Absorption of continuum radiation in a resonant expanding gaseous sphere
[Text] / N. Y. Shaparev // J. Phys. B-At. Mol. Opt. Phys. - 2014. - Vol. 47, Is. 22. - Ст. 225401, DOI 10.1088/0953-4075/47/22/225401. - Cited References: 11 . - ISSN 0953-4075. - ISSN 1361-6455
РУБ Optics + Physics, Atomic, Molecular & Chemical

Кл.слова (ненормированные):
absorption -- continuum radiation -- expanding sphere

Аннотация: The paper deals with absorption of external continuum radiation in a self-similarly expanding gaseous sphere. Frequency probability and integral probability of radiation absorption in the resonance frequency range are determined depending on the expansion velocity gradient and thickness of the optical medium. It is shown that expansion results in a reduced optical thickness of the medium and enhanced integral absorption.

WOS

Держатели документа:
Russian Acad Sci, Inst Computat Modeling, Krasnoyarsk 660036, Russia
ИВМ СО РАН

Доп.точки доступа:
Шапарев, Николай Якимович