V.A. Barynin

The choice of temporal and spatial metrics for the reference frame in the three-dimensional chronometrically invariant two-metric formalism is discussed in connection with various approaches for describing gravitation.

V.G. Bagrov, I.M. Ternov, В.V. Kholomai

Variables are separated in the Dirac equation for an electron moving in a uniform magnetic field and in a parallel, time-dependent electric field. Explicit solutions are fo\Dld for certain particular fields.

M.M. Mkrtchyan

Equations are derived for the total power and the polarization of the radiation emitted by an electron or by a scalar particle in the second excited state and moving in a superstrong magnetic field.

G.V. Smirnitskaya, E.M. Reikhrudel, and I.A. Nosyreva

In an attempt to determine the nature of the oscillations which arise in a Penning discharge, a study has been made of the role played by perturbations caused in the electric field near the anode by longitudinal apertures in the cylindrical anode. The radial potential drop was measured by the "ion-kinetics" method. A study was also made of the sensitivity of the discharge oscillations to the potential on probes placed in the anode apertures.

В.K. Kerimov and V.P. Tsvetkov

The angular and energetic distributions are calculated for the bremsstrahlung emitted during the scattering of a neutrino by an electron. The radiation corrections of order α to the effective total cross section for these scattering is calculated; the expression for this correction also takes into account the emission of a hard photon.

V.A. Eliseevnin

The frequency correlations are calculated for the amplitude and phase fluctuations of two spherical waves of different frequencies propagating in an isotropic turbulent medium. The structure function of the refractive index of such a medium obeys a Kolmogorov-Obukhov two-thirds law. The analysis is carried out from the wave point of view in the first approximation of the smooth-perturbation method.

G.A. Bendrikov, V.I. Ogorodnikova, and N.A. Sukhacheva

The basic properties of the root trajectories, which can be used for qualitative and quantitative of the dynamics of identical two-dimensional systems, are studied for characteristic equations of the form N(p) + jaM(p)= 0 with complex coefficients. Geometric and analytic methods for constructing these root trajectories are described. The degree of the trajectory equation in ω^2 is much lower than that of the characteristic equation, so it becomes easier to analyze two-channel systems described by high-order differential equations. Illustrative constructions of root trajectories are described.

V.P. Dolgachev

Equations are derived for the second-order secular perturbations in the orbital elements for remote earth satellites under the condition that the perturbing function contains terms of third degree in the Lagrange variables.

D.V. Gal'tsov and N.S. Nikitina

In an analysis of the effect of external electromagnetic radiation on the spin state of slightly relativistic electrons in a uniform magnetic field, it is shown that an electron beam can become highly polarized under certain conditions. An expression is found for the probability for radiative transitions involving spin flipping which holds for all particle energies.

E. Gernits, R.M. Minikaeva, V.E. Mitsuk, and V.A. Chernikov