Issue 2, 1988
Interaction between a lepton and a Higgs boson in a strong magnetic field
Interaction between a lepton and a Higgs boson in a strong magnetic field
V.Yu. Lin'kov, I.A. Obukhov, V.C. Perez-Fernandez, V.R. Khalilov
The Weinberg-Salam model has been used to examine the effects of Higgs bosons on lepton motion in a magnetic field in the second order of perturbation theory with respect to the electroweak interaction constant.
Show AbstractSupersymmetric $\sigma$-model manifold parallelizability as a consequence of current conservation
Supersymmetric $\sigma$-model manifold parallelizability as a consequence of current conservation
V.V. Belokurov, M.Z. Iofa
It is shown that field manifold parallelizability follows from the conditions for current conservation in a two-dimensional supersymmetric $\sigma$-model containing a Vessa-Zumino turn.
Show AbstractTraveling waves in an inhomogeneous oscillation medium
Traveling waves in an inhomogeneous oscillation medium
A.S. Mikhailov, G. Rasul
A traveling wave is considered in an inhomogeneous self-oscillating medium; the wave is partially reflected at the boundary between two regions differing in oscillation frequency.
Show AbstractThe second moment of the magnetic field in a multiscale flow
The second moment of the magnetic field in a multiscale flow
N. Akanbaev
An equation is derived for the second moment of the magnetid field in a random multiscale velocity pattern. An asymptotic study is made for an isotropic multiscale flow having mirror symmetry.
Show AbstractOptical cross modulation in nematic liquid-crystal films: application to $\chi ^{(3)}$ dispersion measurement on Rayleigh-line flank
Optical cross modulation in nematic liquid-crystal films: application to $\chi ^{(3)}$ dispersion measurement on Rayleigh-line flank
F.N. Gadzhiev, N.I. Koroteev, G.A. Paityan
Amplitude modulation is transferred from one laser beam to another in a planar-oriented mixture of nematic liquid crystals to determine the dispersion in the cubic nonlinearity $\chi ^{(3)}$ at a Rayleigh-line flank with a resolution of a few Hz. The anomalously large values are due in part to the collective behavior in the orientation ordering and in part to the anomalously large $\partial {\epsilon} / \partial T$ and dichroism. Measurements have been made on $x_{ijk}^{3}$, relaxation time, elastic moduli, and thermal diffusivity parallel and transverse to the liquid-crystal director.
Show AbstractAcoustic nonlinearity in gadolinium molybdate
Acoustic nonlinearity in gadolinium molybdate
L.K. Zarembo, G.P. Morozova, O.Yu. Serdobol'skaya
Measurements have been made on the critical behavior of the second-harmonic amplitude in gadolinium molybdate; they agree with theoretical results obtained from the renormalization-group method. The irregular steps in the amplitude at the second harmonic and the phase steps at the fundamental in the range 80-140°C are due to polarization.
Show AbstractElectron-photon cascade longitudinal-distribution moments
Electron-photon cascade longitudinal-distribution moments
I.P. Ivanenko, V.V. Sizov
The moment method as widely used in cascade theory is extended: scattering and realistic cross sections for other elementary interactions are introduced. A cascade inlet is used in examining the physical and mathematical accuracies.
Show AbstractTemperature-dependent energy transfer: two-component dye solutions
Temperature-dependent energy transfer: two-component dye solutions
A.N. Ponomarev, A.M. Saletskii, V.I. Yuzhakov
Excitation transfer has been examined for two-component ethanolic dye solutions at various temperature. Molecular association and inhomogeneous broadening affect the migration. The critical radius and the relative rate constants have been determined as functions of temperature.
Show AbstractA Monte Carlo study on energy-transfer time dependence in organic complexes
A Monte Carlo study on energy-transfer time dependence in organic complexes
A.A. Demidov
Monte Carlo calculations with high time resolution have been used to detect the time dependence of the energy transfer in a restricted-volume organic complex of phycobilisome type. A variable time step was used in the calculations to detect the active exciton and perform microscopic calculations on the transfer rate.
Show AbstractDirect observations on the dynamic Stark effect in two-photon absorption and parametric interaction
Direct observations on the dynamic Stark effect in two-photon absorption and parametric interaction
V.V. Krasnikov, M.S. Pshenichnikov, V.S. Solomatin
Measurements have been made on the energy shift in the $4s_{1/2}$ level for the sodium atom in linearly and circularly polarized beams in resonance with the $4s_{1/2} – 4p_{1/2,3/2}$ transition. Two-photon absorption and parametric mixing have been used in the probing. The shift, broadening, and splitting of the $4s_{1/2}$ level have been recorded.
Show AbstractOptical features of a multifiber $Nd^{3+}$ laser
Optical features of a multifiber $Nd^{3+}$ laser
M.L. Karpova, L.S. Kornienko, V.V. Radchenko
A free-running $Nd^{3+}$ multifiber laser has been examined for subthreshold emission and the effects of end reflections on the energy and threshold parameters. Measurements have been made on the spectrum width, pulse length, and divergence as the pumping energy is varied.
Show AbstractContributions from continuum states to the Raman-scattering cross section for the excited hydrogen atom
Contributions from continuum states to the Raman-scattering cross section for the excited hydrogen atom
S.M. Gladkov, A.M. Zheltikov
Perturbation theory is applied to continuum contributions to the Raman-scattering RS cross sections for the hydrogen atom; in some cases, the contributions from continuum states to the scattering cross sections are comparable with those from the discrete spectrum.
Show AbstractThe relation between lasing and fluorescent radiative transport in a lasing system
The relation between lasing and fluorescent radiative transport in a lasing system
M.B. Levin, M.G. Reva, V.V. Rodchenkova, B.M. Uzhinov
Rhodamine 6G has been used with oxazine 17 and cresyl violet, as well as rhodamine C with oxazine 17, to examine the relation between fluorescent radiation transport and lasing as affected by acceptor concentration on laser excitation. Measurements have been made on the acceptor concentrations at which donor lasing ceases, which agree with theoretical estimates derived from the spectra.
Show AbstractEmission-electronics methods in diagnosing high-temperature transition-metal characteristics
Emission-electronics methods in diagnosing high-temperature transition-metal characteristics
L.Yu. Goloskokova, B.B. Shishkin
A temperature dependence is demonstrated for S, the point-defect thermal entropy of formation, and a method is proposed for determining S(T) by measuring the voltage-current characteristics for recombination-emission currents.
Show AbstractThe static magnetic susceptibility of a polymeric hydrocarbon chain
The static magnetic susceptibility of a polymeric hydrocarbon chain
M.N. Zubtsov, V.V. Ishchenko
A method is given for calculating polymer-chain static magnetic susceptibilities on the basis of simulating the $\pi$-electron density distribution for a hydrocarbo n molecule of any length from the $\pi$-electron distributions for C-C pairs with variable distances between the C ions. The $\sigma$ core susceptibility is incorporated as the sum of the $\sigma$ bonds in the molecule.
Show AbstractRelativistic gravitational theory and spatial topology
Relativistic gravitational theory and spatial topology
A.A. Vlasov
It is shown that the following occur in relativistic gravitational theory: 1) no nontrivial spatial topologies arise in gravitational collapse and 2) there are no models of the universe having nontrivial topology.
Show AbstractThe Stark shift for electrons localized over liquid helium
The Stark shift for electrons localized over liquid helium
O.F. Dorofeev, B.A. Lysov, O.S. Pavlova
The Stark shifts have been calculated for the first three levels for electrons localized over liquid helium in the third order in perturbation theory. The results agree well with measurements for $^4Не$ and $^3Не$.
Show AbstractDirac optical model calculations on elastic proton scattering at 500 Mev by $^{90}Zr$
Dirac optical model calculations on elastic proton scattering at 500 Mev by $^{90}Zr$
Yu.M. Sheinov
Calculations are presented on the differential cross section and polarization characteristics for elastic proton scattering at $Т_p$ = 500 MeV by $^{90}Zr$ in the eikonal approximation within a relativistic optical model.
Show AbstractArgon $3p^53d$ level excitation in the Born distorted-wave approximation
Argon $3p^53d$ level excitation in the Born distorted-wave approximation
V.V. Balashov, A.N. Grum-Grzhimailo, A.A. Khrapov
Differential and total cross sections have been derived for the excitation of $3p^53d$ ($J = l$) levels in argon by intermediate-energy electrons; electron-photon correlations in emission from these levels via transition to the ground and $Зр^54р$ states are considered.
Show AbstractEffects of $Cr^{3+}$ on magnetization in structure-Y hexaferrites
Effects of $Cr^{3+}$ on magnetization in structure-Y hexaferrites
L.G. Antoshina, E.G. Kondrat'eva
Magnetization measurements have been made on $Ba_2Ni_2Fe_{12-x} Cr_хO_{22}$ (x = 0.0, 1.5, and 3.0). The magnetization is dependent in a complicated fashion on the chromium content. It is suggested that there is noncollinear magnetic ordering in chromium-substituted hexaferrites.
Show AbstractThe contributions from short-range order and the size effect to Cu-Zn alloy resistivity
The contributions from short-range order and the size effect to Cu-Zn alloy resistivity
A.A. Katsnel'son, O.V. Kris'ko, V.M. Silonov, T.V. Skorobogatova
A model potential has been used in calculating the residual resistivity for Cu + 15 at.% Zn. The size effect has an anomalous influence on the residual resistivity in Cu-Zn alloys (reduces it).
Show AbstractEffects of emitter parameters on the resolving power in a scanning tunneling microscope
Effects of emitter parameters on the resolving power in a scanning tunneling microscope
S.D. Alekperov, S.I. Vasil'ev, S.P. Molchanov
Conditions are considered under which the probe-emitter parameters provide the maximum resolution in a scanning tunneling microscope; a method is described for making emitters with preset features.
Show AbstractThe magnetocaloric effect and magnetic phase transitions in dysprosium
The magnetocaloric effect and magnetic phase transitions in dysprosium
S.A. Nikitin, A.M. Tishin, S.E. Bykhover, S.V. Red'ko
Measurements have been made on the magnetocaloric effect in a dysprosium single crystal up to 60 kOe. Above 20 kOe, there are two peaks on the temperature-dependence curve. The entropy change in the phase transition has been determined as a function of the field.
Show Abstract