A procedure for determining interatomic interaction potentials in an interaction energy interval from 0.1 eV to several electron-volts is described. To determine the interaction potentials, an investigation of the elastic scattering of fast neutral beams of 600-4000 eV energy in gases was carried out. Results were obtained for the complete series of inert gases. Theoretical and experimental data are compared.
Show AbstractA scheme of weak interaction with two sorts of intermediate vector particles is considered and the properties of the scheme investigated. A concept of cp-invariance violation due to the difference between the particle interactions is introduced.
Show AbstractThe β- and γ- emissions of Y^{85} and Sb^{118} were investigated using a magnetic-lens γ-spectrometer and scintillation β- and y-spectrometers. Results of measurements of βγ-coincidences corroborated the decay scheme of Y^{85}. The β-transition with 480 keV cutoff energy previously suggested from energy-balance considerations was observed in Sb^{118}. Measured βγ-coincidences confirmed the decay scheme of Sb^{118}previously arrived at from γγ-coincidences and energy-balance considerations.
Show AbstractThe S-matrix formalism developed for describing scatter processes in field theory can be used to find the levels of bound states and their eigenvectors, and for metastable states and their widths. These assertions are considered in detail for Lee's model [1]. The formalism can be extended to the case of metric [2].
Show AbstractAn expression is obtained for the free energy of the spatially homogeneous phase in the self-consistent field approximation and, as applied to liquids or gases, a modified self-consistent field method is shown to give results which are qualitatively correct and of the right order.
Show AbstractThe average values (with respect to the first harmonic) of transistor parameters are investigated both theoretically and experimentally as a function of the oscillation amplitude in a common-emitter configuration, when there is no bias current in the base circuit. It is shown that the effect of oscillation amplitude variation on the transistor parameters is most marked for oscillation amplitudes which are small in comparison with the collector supply voltage, and must be allowed for in designing the parameters of oscillatory circuits in the collector circuit.
Show AbstractThe density of states of a strongly alloyed semiconductor in an external constant electric field is considered. Explicit formulas are obtained for comparatively weak and comparatively strong fields. The external field can be a dislocation field, assumed approximately constant.
Show AbstractThe coupling constants and heavy particle operators are renormalized in a simple quantum field theoretical model with three types of fixed particle, interacting by exchange of relativistic bosons. A nonanalytic dependence is found between the renormalized coupling constant λ1 and the "internal" coupling constant λ02. The region of permissible values of the renormalized coupling constants is found for a given cut-off momentum (energy).
Show AbstractQuantum statistics are used to derive hydrodynamical equations that allow for dissipative viscosity, diffusion and heat conduction processes. No use is made of the kinetic equation.
Show AbstractA scintillation source of improved resolution is described, together with results obtained by using it on charged particles accelerated in the Moscow University cyclotron.
Show AbstractThe effect of amplitude and frequency modulation of the input signals in two-tank parametric frequency dividers is investigated. It is shown that amplitude modulation is strongly suppressed. In the case of frequency division of an FM-signal, the deviation is reduced by a factor n.
Show AbstractThe resolving powers of two types of multiple-beam interferometer with plane-parallel plates and with the plates placed to form a wedge are compared.
Show AbstractA new formula is obtained for the mass of a nucleus, which gives an improved picture of the nuclear energy surface properties.
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