Internal friction of alloys of the terbium -dysprosium system in the paramagnetic region close to the Neel temperature
Internal friction of alloys of the terbium -dysprosium system in the paramagnetic region close to the Neel temperature
G.I. Kataev, М.R. Sattarov, and V.V. Shubin
At frequencies of $\sim$ 1 kHz and temperatures T = 78-320 K in fields of up to 14.5 kOe, the internal friction $Q^{-1}$ of Tb-Dy alloys is studied. Above the Neel point, a maximum of $Q^{-1}(T)$ with large temperature hysteresis is observed; this is associated with the disappearance of antiferromagnetic short-range order.
Show AbstractConfigurational splitting of the giant dipole resonance in light nuclei
Configurational splitting of the giant dipole resonance in light nuclei
В.S. Ishkhanov, I.М. Kapitonov, V.G. Neudachin, V.G. Shevchenko, R.А. Eramzhyan, and N.Р. Yudin
А review of configurational splitting of the giant dipole resonance in light nuclei, discovered at Мoscow State University, is presented. The phenornenon occurs at low and interrnediate energies.
Show AbstractEffect of post-collision interaction on the interference of autoionization resonances with а continuous spectrum
Effect of post-collision interaction on the interference of autoionization resonances with а continuous spectrum
Sh.D. Kunikeev and V.S. Senashenko
А qualitative study is reported of the effect of final-state interaction on the interference between autoionization resonances with а continuous spectrum. It is shown that adequate description of interferences requires the inclusion of the post-collision interaction in the expressions for the amplitudes for both direct and resonant ionizing transitions.
Show AbstractReduction methods in proЫems involving the reconstruction of the shape of а surface from а set of its zero images
Reduction methods in proЫems involving the reconstruction of the shape of а surface from а set of its zero images
А.Р. Ivanov and Yu.Р. Pyt'ev
An algorithm is developed for reconstructing the shape of а selfluminous surface from а set of its zero images. An algorithm is also obtained for the computerized synthesis of any other zero images of the surface from the same set.
Show AbstractReflection coefficients of multilayer metal-dielectric coatings deposited on а metal substrate
Reflection coefficients of multilayer metal-dielectric coatings deposited on а metal substrate
S.V. Grebenshchikov, N.V. Grishina, add М.F. Malkhozov
А numerical analysis is r~ported of the reflection coefficient of metal mirrors with dielectric coatings containing thin metallic interlayers.
Show AbstractSaturation effect in time-domain CARS spectroscopy
Saturation effect in time-domain CARS spectroscopy
V.В. Morozov, S.Yu. Nikitin, L.Р. Platonov, and V.G. Tunkin
Experiments on time-domain coherent anti-Stokes Raman scattering spectroscopy in thallium vapor have revealed the saturation of the anti-Stokes signal as the probe pulse energy was increased. Тhе effect is explained in terms of а "oscillation quenching" mechanism.
Show AbstractSqueezed states in space-limited light beams
Squeezed states in space-limited light beams
А.V. Belinskii and А.S. Chirkin
Тhе preparation of squeezed states of space-limited light beams is investigated in the case of parametric amplification. It is shown for the first time that classical noise in а divergent beam can bе squeezed more effectively than in а collimated beam.
Show AbstractStructural properties of thin-film interference filters
Structural properties of thin-film interference filters
А.V. Kozar and А.V. Kozlov
It is shown analytically that it is possible to synthesize thin- film interference filters in which not only the optical thickness of the films but also the total optical thickness of the entire structure can bе significantly less than the wavelength. The properties of such structures are analyzed and simple analytic expressions are ob tained and can bе used to synthesize these structures for different applications in optics.
Show AbstractNanosecond dynamics of melittin: tirae-resolved fluorescence spectroscopy
Nanosecond dynamics of melittin: tirae-resolved fluorescence spectroscopy
Р. Hershman, А.S. Ladokl1in, N.V. Lebedeva, and А.Yu. Chikishev
The spectrai dependence of the decay kinetics of tryptophan fluores cence in water solutions of melittin at different temperatures has been investigated. The temperature dependence of the intramolecular relaxation time of the tryptophanal environment has been determined for the tetrameric form of melittin.
Show AbstractKinematic theory of glancing-incidence X-ray diffraction
Kinematic theory of glancing-incidence X-ray diffraction
M.А. Andreeva
Glancing-incidence X-ray diffraction is considered for mosaic crystals under the conditions of total reflection, so that refraction can bе accurately taken into account for both transmitted and diffracted waves in а stratified medium.
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