Saiko, A. P. Gusakov, V. E.
Published in
Journal of Experimental and Theoretical Physics

It is shown that in crystal lattices with a basis the cooperative behavior of a certain type of atoms performing optical long-wavelength vibrations in a double-well potential of the field of the matrix lattice may lead to the formation of a bistable sublattice. As a result of the interaction of the metastable states of such a sublattice with the vi...

Dizhur, S. E. Kotel’nikov, I. N. Dizhur, E. M.
Published in
Journal of Communications Technology and Electronics

Al-δ-GaAs structures are studied where tunneling to one or more subbands of the 2D electron system of a near-surface delta-doped layer is observed. Reflection of electrons at the threshold of the emission of an LO-phonon is observed. This phenomenon occurs when a new subband is involved in the tunneling process and when intersubband transitions of ...

Bruevich, E. A. Katsova, M. M. Sokolov, D. D.
Published in
Astronomy Reports

We analyze the X-ray emission and chromospheric activity of late-type F, G, and K stars studied in the framework of the HK project. More powerful coronas are possessed by stars displaying irregular variations of their chromospheric emission, while stars with cyclic activity are characterized by comparatively modest X-ray luminosities and ratios of ...

Dobrev, V. K.
Published in
Physics of Particles and Nuclei

We give character formulas for the positive energy unitary irreducible representations of the N-extended D = 4 conformal superalgebras su(2, 2/N). Using these, we also derive decompositions of long superfields as they descend to the unitarity threshold. These results are also applicable to irreps of the complex Lie superalgebras sl(4/N). Our deriva...

Daskaloyannis, C.
Published in
Physics of Atomic Nuclei

The integrals of motion of classical two-dimensional superintegrable systems, with polynomial integrals of motion, close in a restrained polynomial Poisson algebra; the general form of the quadratic case is investigated. The polynomial Poisson algebra of the classical system is deformed into a quantum associative algebra of the corresponding quantu...

Karnakov, B. M. Popov, V. S.
Published in
Journal of Experimental and Theoretical Physics

We consider the problem of a hydrogen atom in a superstrong magnetic field, B≫ Ba=2.35×109 G. The analytical formulas that describe the energy spectrum of this atom are derived for states with various quantum numbers nρ and m. A comparison with available calculations shows their high accuracy for B≫Ba. We note that the derived formulas point to a m...

Malkin, Z. M.
Published in
Astronomy Reports

A new version of the Optical Characteristics of Astrometric Radio Sources (OCARS) catalog is presented. The catalog includes a list of radio sources observed in astrometric and geodetic VLBI programs since 1979, their redshifts, photometric data in 13 bands in the visible and near infrared, and a table indicating identifications btween the OCARS ob...

Eremenko, D. O. Fotina, O. V. Giardina, G. Lamberto, A. Malaguti, F. Platonov, S. Yu. Taccone, A. Yuminov, O. A.
Published in
Physics of Atomic Nuclei

The experimental fission times are analyzed for excited nuclei produced in the 28Si + natPt reaction. Experimental lifetimes obtained by the crystal-blocking technique range between 10−17 and 10−18 s at bombarding energies between 140 and 170 MeV, respectively. Experimental data are analyzed within the statistical theory of nuclear reactions and th...

Danilov, N. A. Krylov, Yu. S. Korpusov, G. V. Kostikova, G. V. Barabanov, I. R. Bezrukov, L. B. Kornoukhov, V. N. Novikova, G. Ya. Yanovich, E. A. Nesterova, N. P.
...
Published in
Radiochemistry

The physicochemical properties of C4-C8 carboxylic acids (mutual solubility of carboxylic acids and water, ionization constants in water, distribution between water and 1,2,4-trimethylbenzene, dimerization constants in 1,2,4-trimethylbenzene) were studied. Since indium carboxylates are sparingly soluble in 1,2,4-trimethylbenzene and the second orga...

Okun, L. B.
Published in
Physics of Atomic Nuclei

This brief preface explains why the editorial board of the journal Yadernaya Fizika (Physics o f Atomic Nuclei) decided to reprint the article of the three authors, which was published in 1928 and which is hardly accessible to the present-day reader; tells briefly the history of its creation; and traces, from 1881 to 2001, the fate of the questions...