Faculty of Physics
M.V.Lomonosov Moscow State University
Menu
Найдено: 7528

Effects of emitter parameters on the resolving power in a scanning tunneling microscope

Effects of emitter parameters on the resolving power in a scanning tunneling microscope

S.D. Alekperov, S.I. Vasil'ev, S.P. Molchanov

Moscow University Physics Bulletin 1988. 43. N 2. P. 93

Conditions are considered under which the probe-emitter parameters provide the maximum resolution in a scanning tunneling microscope; a method is described for making emitters with preset features.

Show Abstract
PDF

The magnetocaloric effect and magnetic phase transitions in dysprosium

The magnetocaloric effect and magnetic phase transitions in dysprosium

S.A. Nikitin, A.M. Tishin, S.E. Bykhover, S.V. Red'ko

Moscow University Physics Bulletin 1988. 43. N 2. P. 96

Measurements have been made on the magnetocaloric effect in a dysprosium single crystal up to 60 kOe. Above 20 kOe, there are two peaks on the temperature-dependence curve. The entropy change in the phase transition has been determined as a function of the field.

Show Abstract
PDF

Special theory of relativity and centrifuge experiments

Special theory of relativity and centrifuge experiments

A.A. Logunov, Yu.V. Chugreev

Moscow University Physics Bulletin 1988. 43. N 1. P. 1

A number of possible experiments on a rotating disk is discussed with a view to verifying the special theory of relativity. Concepts discussed include observers proper time, physically measurable distances, frequencies, and so on.

Show Abstract
PDF

Cosmology and Einstein-Cartan theories. II. Some exact solutions

Cosmology and Einstein-Cartan theories. II. Some exact solutions

V.A. Korotkii, Yu.N. Obukhov

Moscow University Physics Bulletin 1988. 43. N 1. P. 10

A class of cosmologlcal models with a spinning fluid is investigated. An anisotropic generalization of the de Sitter model with torsion, a generalization of the anisotropic model with cosmological constant, and a stationary model with rotation without loss of causality are obtained.

Show Abstract
PDF

Uniqueness of the relativistic center of a set of events

Uniqueness of the relativistic center of a set of events

N.P. Klepikov

Moscow University Physics Bulletin 1988. 43. N 1. P. 16

It is shown that the generalized Osborn relation together with the correct commutation of the collective time with momentum, energy, and collective coordinate of the system ensure that the previously found expressions for the coordinates of the center of a set of events are unique.

Show Abstract
PDF

Effect of a constant electromagnetic field on the photoproduction of $W^+e^-$ pairs by relativistic neutrinos

Effect of a constant electromagnetic field on the photoproduction of $W^+e^-$ pairs by relativistic neutrinos

V.Ch. Zhukovskii, A.V. Kurilin

Moscow University Physics Bulletin 1988. 43. N 1. P. 20

The standard Weinberg-Salam-Glashow model is used to calculate the probability of the decay of the neutrino into an electron and the W-boson in a plane-wave field (crossed field + wave). An analysis of a partial expansion of the total decay probability has led to results that describe the photoproduction of $W^+e^-$ pairs by relativistic neutrinos in a crossed field.

Show Abstract
PDF

Additional neutral vector boson in 7-dimensional theory of gravielectroweak interactions

Additional neutral vector boson in 7-dimensional theory of gravielectroweak interactions

V.R. Gavrilov

Moscow University Physics Bulletin 1988. 43. N 1. P. 26

An analysis is given of the effect due to the additional neutral vector boson predicted by the 7-dimensional theory of gravielectroweak interactions. The scattering of a muon neutrino by a muon, in which the additional neutral current appears at both high and relatively low energies of the colliding particles, is examined as a special case.

Show Abstract
PDF

Condensate state of charged vector bosons in an ultrastrong magnetic field

Condensate state of charged vector bosons in an ultrastrong magnetic field

A.V. Nikolaev, I.A. Obukhov, V.K. Perez-Fernandez, V.R. Khalilov

Moscow University Physics Bulletin 1988. 43. N 1. P. 30

The nonlinear equations of motion of the Weinberg-Salam W-bosons in an ultrastrong magnetic field are investigated. The resulting topologically stable solutions can be interpreted as the condensate states of W-bosons in a magnetic field.

Show Abstract
PDF

A search for long-range particles in deep X-ray emulsion chambers

A search for long-range particles in deep X-ray emulsion chambers

T.P. Amineva, I.P. Ivanenko, N.P. Il'ina, Т.V. Lazareva, B.L. Kanevskii, A.K. Managadze, E.A. Murzina, E.I. Pomelova, E.G. Popova, I.V. Rakobol'skaya, N.G. Rya'bova, L.G. Sveshnikova, O.P. Strogova, N.G. Zelevinskaya, V.M. Maksimenko, I.A. Mikhailova, L.P. Nikolaeva

Moscow University Physics Bulletin 1988. 43. N 1. P. 35

The first results are reported on hadron intensity recorded at a depth of 81-110 cm of lead in an X-ray emulsion chamber. The intensity of the cascades within the chamber is calculated on the assumption that charmed particles are created with high probability in hadron interactions.

Show Abstract
PDF

Compensation of the divergence of a light beam due to thermal defocusing in a stationary state

Compensation of the divergence of a light beam due to thermal defocusing in a stationary state

A.G. Glotov, D.P. Krindach, V.S. Sidorin

Moscow University Physics Bulletin 1988. 43. N 1. P. 41

An experimental study is reported of the compensation of thermal refraction by positive lenses mounted at entry to the medium with thermal nonlinearity. The results are generalized to the case of semi-infinite media.

Show Abstract
PDF