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21.
V. B. Zon B. A. Zon V. G. Klyuev A. N. Latyshev D. A. Minakov O. V. Ovchinnikov 《Optics and Spectroscopy》2010,108(4):637-639
A method for measuring the IR optical properties of metals, which implies the analysis of the angular distribution of the
photons emitted from the edge of a metal plate due to the conversion of thermal surface plasmons, has been theoretically and
experimentally shown. In this work an increased accuracy of the proposed method in the IR region is demonstrated in comparison
with more conventional methods based on the Fresnel formulas. This conclusion is supported experimentally with data obtained
from the surface impedance measurement of copper in the range from 8 to 9 μm at 185°C. 相似文献
22.
In the field of two-dimensionally localized pump wave, the dependences of the threshold of various modes of stimulated scattering
on the scattering angle were determined for various medium parameters and pump intensities. 相似文献
23.
S.G. Ovchinnikov V.A. Gavrichkov M.M. Korshunov E.I. Shneyder I.A. Nekrasov Z.V. Pchelkina J. Spitaler 《Journal of magnetism and magnetic materials》2009,321(7):917-919
A review of recent results for the doping dependence of the Fermi surface and mechanism of pairing in LaSrCuO obtained within the LDA+GTB multielectron approach is given. Both magnetic and phonon contributions to the dx2-y2-gap are considered. 相似文献
24.
Optics and Spectroscopy - The luminescence properties of colloidal Ag2S quantum dots (QDs) with ZnS or SiO2 shells coated with thioglycolic or 2-mercaptopropionic acids are comparatively analyzed.... 相似文献
25.
Technical Physics - The structural state in the zones of indentation and scratch testing of Ti–Al–Si–Cu–N gradient coatings has been studied using dark-field electron... 相似文献
26.
Calculations of the C3H6 · LiH, C4H8 · M+, and C4H8 · MH systems and of C2H2 · MH complexes (M = Li or Na) were carried out by the unrestricted Hartree-Fock-Roothaan (UHF) method with partial optimization of the geometry using fixed geometric parameters of the C3H6 and C4H8 molecules. The standard 3-21G and 6-31G* basis sets were used. Unlike the C3H6 · LiH structure, the C4H8 · M+ and C4H8 · MH systems are typical complexes. It was found that the C4H8 · M+, C4H8 · MH, and C2H2 · MH complexes are similar in coordination of M+ ions and MH molecules by carbon atoms in spite of considerable differences in the interatomic distances (–1 A) between these atoms in the C4H8 and C2H2 molecules. The heats of formation (Q), which were calculated in the UHF/6-31G* approximation and using second- and fourth-order Möller-Plesset perturbation theory taking into account the electron correlation energy in the MP2/6-31G*. MP4(SDQ)/6-31G*, and MP4(SDTQ)/6-31G* approximations, satisfy the following relationships: Q(C2H3 · MH) < Q(C4H8 · MH) < Q(C4H8 · M+). It was observed that in going from Li to Na the corresponding values of Q tend to decrease.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya. No. 7, pp. 1636–1640, July, 1996. 相似文献
27.
The integral cross sections for elastic scattering and spin exchange for proton impact on atomic hydrogen show several oscillations in the energy range 0.01-1.0 eV that cannot be associated with resonances or the glory effect. A complex angular momentum analysis using computed Regge trajectories shows that each peak of the oscillatory structure is predominantly associated with at most three trajectories. In this way, the peaks are related to the L=0 bound states of H+ 2. The complex angular momentum theory for integral cross sections that we introduce shows that such oscillations are a general feature of potential scattering. 相似文献
28.
It is shown that any continuous invariant function on a doubly homogeneous simple order is a polynomial with respect to supremum and infimum operations. 相似文献
29.
Peter G. Ovchinnikov 《Proceedings of the American Mathematical Society》1997,125(10):2839-2841
An arbitrary orthoposet is shown to be isomorphic to , being a subbasis of a Hausdorff topological space satisfying 1) , 2) , and 3) every covering of by elements of possesses an at most 2-element subcovering. The couple turns out to be unique.
30.
Ovchinnikov V. V. Mal’tseva S. A. Kremleva N. V. 《Russian Journal of General Chemistry》2019,89(10):2163-2164
Russian Journal of General Chemistry - Enthalpy of vaporization (ΔvapH°) of trimethylsilyl esters of dithio- and tetratiophosphoric acids (RX)2P(S)SSiMe3 (X = O, S) have been determined... 相似文献