Mass Number Dependence of the Forward Production of Charged Hadrons and Nuclear Fragments in Carbon–Lead and Carbon–Carbon Interaction at a Beam Energy of 19.6 GeV per Nucleon

Physics of Atomic Nuclei - The inclusive differential cross sections for the production of $$\pi^{\pm}$$ and $$k^{-}$$ mesons, protons, and antiprotons with momenta between 6 and 50 GeV/c and...     

Crystal Structures of N-[2-(4-oxo-4H-benzo[d] [1, 3]-oxazin-2-yl)benzamide and Propionamide and Their N-Containing Analog N-[2-(4-oxo-3,4-dihydroquinazolin-2-yl)phenyl]propionamide

Crystallography Reports - Specific features of the molecular and crystal structures of two substituted benzoxazinones (I and II) and their structural analog quinazolinone (III) have been analyzed...     

Structurization of Aerosil OX50 Dispersions

Structural and mechanical properties of aqueous dispersions of Aerosil OX50 were studied by rotary viscometry. The thixotropic properties of concentrated (20-50 wt %) Aerosil dispersions used in the sol-gel synthesis of quartz glass are due to structurization caused by appreciable overlapping of the electrical double layers of the particles. The particle interaction occurring in a limited volume is accompanied by formation of periodic colloidal structures of the second kind. The viscoplastic properties and extrema in the pH dependence of the viscosity are explained in terms of collective interaction of Aerosil particles according to the Deryagin-Landau-Verwey-Overbeek (DLVO) theory.     

Active media for gasdynamic lasers

Working media for gasdynamic lasers are considered. An experimental and theoretical study is made of N₂0 gasdynamic lasers (GDL) with adiabatic expansion from a slit. The kinetics of the physical processes in an N₂0-GDL is analyzed. The influence of the addition of hydrogen halides and of water on the relaxation processes in a C0₂ laser is investigated in detail. The conditions under which addition of hydrogen halides improves the laser operation are found. Chemically active media in GDL are studied, and the high effectiveness of the CS₂-O₂ mixture is demonstrated. The results of the investigations can be used to investigate the possibility of producing an inverted population in the atmosphere.The article is an exposition of the contents of a dissertation presented as part of the requirements for the degree of Candidate of Physicomathematical Sciences. Guidance chairman — Doctor of Physicomathematical Sciences L. A. Shelepin. Consultants — Candidates of Physicomathematic Sciences A. S. Biryukov and E. M. Kudryavtsev. Defended 27 May 1974 at the Moscow Physicotechnical Institute.Translated from Trudy Ordena Lenina Fizicheskogo Instituta im. P. N. Lebedeva, Vol. 107, pp. 110–178, 1979.     

Impact of a DC magnetic field on evanescent wave intensity amplification for a magnetocompensated antiferromagnet

The impact of a dc magnetic field on evanescent TE and TM waves at the interface of transparent media comprising a semiconductor layer and a semi-infinite antiferromagnet is investigated using Otto geometry as an example. It is shown that switching a dc magnetic field orthogonal to a sagittal plane allows maximum amplification of the intensity of propagating evanescent TM or TE waves in both a layer and in semi-infinite space. The optimum conditions correspond to the formation of a peculiar TM or TE surface wave.     

Properties of evanescent waves in polarized media in a constant external electric field: I. The compensated antiferromagnetic

The dependence of formation and propagation conditions for evanescent waves of the TM and TE types on the magnitude and direction of a constant external electromagnetic field is studied by an example of the two-sublattice model of a centrally symmetric antiferromagnetic in the collinear phase.     

Determination of strange sea distributions from νN deep inelastic scattering

We present an analysis of the nucleon strange sea extracted from a global Parton Distribution Function fit including the neutrino and anti-neutrino dimuon data by the CCFR and NuTeV Collaborations, the inclusive charged lepton–nucleon Deep Inelastic Scattering and Drell–Yan data. The (anti-)neutrino induced dimuon analysis is constrained by the semileptonic charmed-hadron branching ratio Bμ=(8.8±0.5)%$B_{\mu }=(8.8\pm 0.5)\mathrm{\%}$, determined from the inclusive charmed hadron measurements performed by the FNAL-E531 and CHORUS neutrino emulsion experiments. Our analysis yields a strange sea suppression factor κ(20 GeV²)=0.62±0.04(exp.)±0.03(QCD)$\kappa (20{\text{GeV}}^2)=0.62\pm 0.04(\text{exp.})\pm 0.03(\text{QCD})$, the most precise value available, an x-distribution of total strange sea that is slightly softer than the non-strange sea, and an asymmetry between strange and anti-strange quark distributions consistent with zero (integrated over x   it is equal to S⁻(20 GeV²)=0.0013±0.0009(exp.)±0.0002(QCD)$S^{-}(20{\text{GeV}}^2)=0.0013\pm 0.0009(\text{exp.})\pm 0.0002(\text{QCD})$).     

Anomalies in the polariton dynamics of a one-dimensional magnetic photonic crystal with antiferromagnetic interlayer ordering in an external DC electric field

The effect of an external dc electric field on the electrodynamic properties of a one-dimensional magnetic photonic crystal (MPC) with antiferromagnetic interlayer ordering is analyzed within the effective-medium method with regard to the quadratic magneto-optical interaction. The magnetizations of adjacent tangentially magnetized ferromagnetic layers are antiparallel. In particular, the effect of a magnetic compensation point on the character of polariton dynamics in this type of MPCs is revealed.