Issue 1, 2002
Asymptotic representation of electromagnetic field of a waveguide in the neighborhood of a boundary edge
Asymptotic representation of electromagnetic field of a waveguide in the neighborhood of a boundary edge
A.N. Bogolyubov, A.L. Delitsyn, I.E. Mogilevskii, A.G. Sveshnikov
The method first suggested by V.A. Kondrat'ev has been applied to construct an asymptotic representation of the electromagnetic field of a waveguide nearby the boundary edge. An explicit form of the spectral problem solution in the neighborhood of the edge where the waveguide has a sector-shaped cross-section has been given.
Show AbstractHeat capacity of $\gamma$-phase solid oxygen
Heat capacity of $\gamma$-phase solid oxygen
P.N. Nikolaev
The heat capacity of $\gamma$-phase solid oxygen has been computed on the basis of the correlation theory of crystalline state. The forms of molecular motion are determined in either of the two nonequivalent positions.
Show AbstractExplicit solutions for completely integrable classical Calogero-Moser systems in an external field
Explicit solutions for completely integrable classical Calogero-Moser systems in an external field
D.V. Meshcheryakov, T.D. Meshcheryakova
Explicit solutions for one completely integrable system of three particles in an external field have been found. A relation between the initial conditions, coupling constant, and the time of fall of two particles into the interaction potential singularity has been obtained.
Show AbstractTthe role of $(\gamma,2n)$ reaction channel in forming light stable isotopes on irradiation of $^{204}$Pb nucleus with intense $\gamma$-quanta beams
Tthe role of $(\gamma,2n)$ reaction channel in forming light stable isotopes on irradiation of $^{204}$Pb nucleus with intense $\gamma$-quanta beams
B.S. Ishkhanov, S.I. Pavlov
Numerical simulation method has been used to analyze the role of the $(\gamma,2n)$ reaction channel in the formation of light stable isotopes on irradiation of the $^{204}$Pb nucleus with intense $\gamma$-quanta beams.
Show AbstractOn energy balance in light reflection
On energy balance in light reflection
S.G. Ilyina
Angles of incidence and refraction angles are assumed to be complex when light is reflected from the interface of two absorbing media. The components of complex angles are calculated by Snell's law of refraction. Under this assumption, calculating the reflected and refracted energy fluxes by the Fresnel formulas results in the total energy balance.
Show AbstractSpectrophotometric method for determining order parameter of liquid-crystal polymers in an electrooptical cell
Spectrophotometric method for determining order parameter of liquid-crystal polymers in an electrooptical cell
D.F. Kiselev, Т.M. Glushkova, S.A. Ivanov, M.M. Firsova, A.P. Shtyrkova
The order parameter $S$ of homeotropically oriented thin liquid-crystal polymer films placed in an electrooptical cell has been determined. The optical parameters of electrodes have been determined from the observed quasi-periodic polarization spectra by the method of interferometric extrema envelopes and the true polarization absorption spectrum of the polymer has been restored. The quantity $S$ has been calculated from the dichroic ratio in the absorption band at $\lambda=405$ nm with due regard for the local field effects.
Show AbstractThree-parametric model of formation of photosynthesizing organisms fluorescence response under laser pulse excitation
Three-parametric model of formation of photosynthesizing organisms fluorescence response under laser pulse excitation
D.V. Maslov, V.V. Fadeev, P.N. Litvinov
A three-parametric model has been suggested for fluorescence-accompanied photophysical processes in photosynthesizing organisms under laser pulse excitation. The model parameters include the excitation cross section of chlorophyll-$a$ molecules determined both by direct absorption of exciting radiation and by energy transfer from auxiliary pigments, the lifetime of the excited state in these molecules defined by their linear deactivation rate, and the singlet-singlet annihilation constant.
Show AbstractPhysicochemical processes going on in biotite under heat treatment
Physicochemical processes going on in biotite under heat treatment
U. Abdurakhmanov$^1$, A.B. Gra,novsky$^2$, A.A. Radkovskaya$^2$, M.Kh. Usmanov$^1$, Sh.M. Sharipov$^1$, V. P. Yugai$^1$
Magnetic susceptibility of naturally occurring mineral biotite as a function of the temperature and heat-treatment time has been analyzed and probable physicochemical processes responsible for these dependences have been described.
Show AbstractMeasurements of magnetic parameters of ferromagnetic films
Measurements of magnetic parameters of ferromagnetic films
L.I. Antonov, L.M. Korenkova, T.N. Letova, I.M. Saraeva, D.G. Skachkov
A new method has been suggested for calculating the magnetic parameters of ferromagnetic films based on measuring the torque acting on the film at the state of equilibrium in a magnetic field.
Show AbstractInfluence of charged surface electronic states on the structure of thin langmuir-blodgett films on semiconductor surface
Influence of charged surface electronic states on the structure of thin langmuir-blodgett films on semiconductor surface
V.V. Belyaev, V.B. Zaitsev, Т.V. Panova, G.S. Plotnikov, M.L. Zanaveskin
The electrophysical properties and the structure of copper stearate films deposited on the semiconductor (germanium and silicon) surface by the Langmuir—Blodgett method have been studied. The Langmuir—Blodgett films have been demonstrated to have electron trapping sites, which recharge under photoiiyection of charge carriers from the bulk of semiconductors. It is found that the recharging of these centers results in the ordering of the structure of deposited copper stearate layers.
Show AbstractNoncommutative thermomechanical deformation
Noncommutative thermomechanical deformation
Trinh Van Khoa
Transition to a noncommutative thermomechanical deformation has been described. The criterion of deformation plasticity, which is the condition of Prigogine evolution, has been obtained as well as the condition for laminar structure appearance.
Show AbstractPeculiarities of static displacements around solitary impurity atoms in the HCP lattice
Peculiarities of static displacements around solitary impurity atoms in the HCP lattice
V.M. Silonov, A.Yu. Geniev, I.V. Kharlamova
Calculations of displacement fields in the vicinity of solitary substitutional impurity atoms in the hexagonal closed-packed (HCP) structure performed in the microscopic approximation revealed a nonchaotic character of arrangement of the displacement vectors of matrix atoms. This was caused both by the size difference between the impurity and the matrix atoms and by special features of the HCP structure.
Show AbstractSeasonal dependence of thermal neutrons anisotropy near the Earth's surface
Seasonal dependence of thermal neutrons anisotropy near the Earth's surface
B.M. Kuzhevskij, O.Yu. Nechaev, E.A. Sigaeva
Based on the neutron flux measurements taken in 1996 near the Earth's surface simultaneously in two opposite directions (away from the Earth's surface and towards it), it is established that near the Earth's surface the neutron flux direction changes periodically with season: in winter, it is directed towards the surface, while in summer, away from it.
Show AbstractLight rays bending by centrally symmetric gravitational field in scalar-tensor gravitation theory
Light rays bending by centrally symmetric gravitational field in scalar-tensor gravitation theory
V.I. Denisov, H.H. Hernandes
It has been demonstrated that the effect of gravitational bending of light rays can be used in searching for stars possessing a scalar charge.
Show AbstractResponse behavior of embedded eigenvalues under changes of waveguide filling
Response behavior of embedded eigenvalues under changes of waveguide filling
M.D. Malykh
In the context of perturbation theory it is demonstrated that embedded eigenvalues of a spectral problem for a waveguide filled with inhomogeneous substance change into complex resonances under small perturbation of material filling. For this purpose it has been proved that already in the first order of perturbation theory eigenfunctions do not belong to the space L$^2$, although the eigenvalues corresponding to them remain real in the same order of smallness.
Show AbstractConvective, thermal, and acoustic instability of nonequilibrium gas plane layer
Convective, thermal, and acoustic instability of nonequilibrium gas plane layer
A.V. Uvarov, A.I. Osipov, D.B. Rubinskii
Ranges of parameters corresponding to convective, thermal, and acoustic instability of a plane layer of a vibratory-nonequilibrium gas have been calculated.
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