# Issue 6, 1978

## A new version of nonlinear electrodynamics (II)

## A new version of nonlinear electrodynamics (II)

### V.N. Ponomarev and E.V. Smetanin

**33**. N 6. P. 1

We obtain the dynamical (wave and soliton) solutions of the equations of a nonlinear electrodynamics, the nonlinearity of which is caused by the contortion of space-time.

Show Abstract## Debye screening and ion current onto a probe in the case of arbitrary electron energy distribution function

## Debye screening and ion current onto a probe in the case of arbitrary electron energy distribution function

### V.A. Dovzhenko, A.P. Ershov, and G.S. Solntsev

**33**. N 6. P. 6

We obtain an expression for the electron Debye radius and derive formulas for calculating the ion current onto a probe for an arbitrary isotropic electron distribution function. An algorithm is given for extracting the second derivative of the electron current when measuring the electron distribution function by the method of Dreyvesteyn.

Show Abstract## Experimental determination of the resonance contour of a three-layer interferometer

## Experimental determination of the resonance contour of a three-layer interferometer

### M.A. Khashchan (Egypt)

**33**. N 6. P. 12

The change in the modulation depth of the interferogram of a three-layer interferometer as a function of the relative displacement of the transmission maxima of the component layers is analyzed experimentally. The fringes are displaced by rotating the interferometer with slightly wedge-shaped layers. The interferogram was recorded photoelectrically by scanning the fringes of equal inclination. The experimental relationship between the contrast of the modulation fringes and the relative displacement leads to the establishment of an analytical equation for the apparatus function of the interferometer.

Show Abstract## Multi electron effects in the spectra of inelastic scattering of fast electrons in metals (I)

## Multi electron effects in the spectra of inelastic scattering of fast electrons in metals (I)

### F.A. Zhivopistsev and F.E. Komas

**33**. N 6. P. 18

Inelastic scattering of electrons in metals (e, e') is studied. It is shown that the dynamic form-factor, taking into account the transition of an electron from an atomic level to the Fermi surface, can be expressed in terms of the twoparticle Green function (in the channel the electron of the conduction band is an inner hole), in which case the expression for the dynamic form-factor holds over the whole frequency range of the spectrum (not only at the absorption edge).

Show Abstract## The one-ion model and the magnetostriction of terbium and its gadolinium alloy

## The one-ion model and the magnetostriction of terbium and its gadolinium alloy

### S.A. Nikitin, S.M. Nakvi and D. Kim

**33**. N 6. P. 24

We measure the temperature dependence of the magnetostriction, the magnetostrictive contribution to the thermal expansion, and that of the magnetization of monocrystalline terbium and the alloy Tb_0,5Gd_0,5. We find that the experimental data agree with the predictions of the one-ion theory as regards the temperature dependence of the magnetostrictive contribution to the thermal expansion. We calculate from experimental data and thermodynamic relations the dependence of the transition temperature and the magnetic-crystalline interaction on the lattice parameters. We demonstrate the agreement of these relationships with estimates made according to the theory of the crystalline field using the one-ion model.

Show Abstract## Causality and regularization

## Causality and regularization

### V.A. Il'in, M.S. Imashev, and D.A. Slavnov

**33**. N 6. P. 30

Within the framework of perturbation theory it is shown that the integral condition of causality is satisfied for a regularized scattering matrix.

Show Abstract## A multilayer interference absorber with a working layer of arbitrary thickness

## A multilayer interference absorber with a working layer of arbitrary thickness

### Yu.A. Pirogov and A.V. Tikhonravov

**33**. N 6. P. 36

The conditions for maximum energy absorption, and equations for the selectivity of a multilayer interference absorber with a working layer of arbitrary thickness are obtained. It is shown that to synthesize a multilayer interference absorber with a specified selectivity (absorption band) one must choose the multilayer dielectric mirrors which surround the working layer with the required dispersion of the phase of the reflection coefficient, or vary the thickness of the working layer.

Show Abstract## NMR spectra in the strong-coupling region

## NMR spectra in the strong-coupling region

### V.S. Tumanov

**33**. N 6. P. 42

A method of calculating high-resolution NMR spectra in the region of strong spin-spin coupling is described. It is shown that in the general case one can determine the number of spectral lines and the Intensities of these lines. The forms of the spectra for which the calculation is carried out in analytical form are indicated. АаВb and ABC spectra are considered as examples.

Show Abstract## Correct use of the palatini principle in gravitational theories

## Correct use of the palatini principle in gravitational theories

### V.N. Ponomarev and A.A. Tseitlin

**33**. N 6. P. 48

It is shown that the correct variational problem in metric theory of gravitations, based on independent variation with respect to the coefficient of affine connectivity, is equivalent to the problem of finding the conditional extremum of the functional of the action S= ∫_Ω√(-g)Rd^4x.

Show Abstract## On the distribution of the turbulent viscosity coefficient in a rectangular channel with a free surface

## On the distribution of the turbulent viscosity coefficient in a rectangular channel with a free surface

### N.K. Shelkovnikov, L.A. Bukina, P.V. Mironov, and S.M. Novochinskii

**33**. N 6. P. 51

## Detection using centimeter-band reflex klystrons

## Detection using centimeter-band reflex klystrons

### R.V. Lebedev

**33**. N 6. P. 54

## Asynchronous oscillations near the synchronization band in a wide-band, self-oscillating system with delay

## Asynchronous oscillations near the synchronization band in a wide-band, self-oscillating system with delay

### V.K. Kornev

**33**. N 6. P. 57

## Thermal emf and the thermomagnetic effect in copper-manganese alloys

## Thermal emf and the thermomagnetic effect in copper-manganese alloys

### O.S. Galkina and Yu.M. Borovikov

**33**. N 6. P. 60

## Orbital spectra of galactic cosmic radiation for two models of local spectra

## Orbital spectra of galactic cosmic radiation for two models of local spectra

### V.V. Suvorov and M.V. Tel'tsov

**33**. N 6. P. 63

## Electron-microscope study of the dislocation structure in MgO crystals

## Electron-microscope study of the dislocation structure in MgO crystals

### F. Terra, G.V. Bushueva, and A.A. Predvoditelev

**33**. N 6. P. 65

## Statistical properties of the quadrature components of an ionospheric signal

## Statistical properties of the quadrature components of an ionospheric signal

### S.F. Mirkotan, A.G. Vologdin, and V.A. Smorodinov

**33**. N 6. P. 68

## Spatial fluctuations in the smectic phase of a liquid crystal

## Spatial fluctuations in the smectic phase of a liquid crystal

### S.V. Kir'yanov

**33**. N 6. P. 71

## Estimate of the proximity of the free energies for classical models with long-range interaction in magnetism theory

## Estimate of the proximity of the free energies for classical models with long-range interaction in magnetism theory

### A.M. Akhmeteli and A.S. Shumovskii

**33**. N 6. P. 74

## Concerning the a-particle absorption mechanism of stopped pions by l6_0 nuclei

## Concerning the a-particle absorption mechanism of stopped pions by l6_0 nuclei

### V.K. Dolinov

**33**. N 6. P. 77

## Mechanism of pulsed remagnetization of magnetic films in strong fields

## Mechanism of pulsed remagnetization of magnetic films in strong fields

### 0.S. Kolotov and T.Sh. Musaev

**33**. N 6. P. 80

## Investigation of the probability properties of the phase of an ionospheric signal

## Investigation of the probability properties of the phase of an ionospheric signal

### S.F. Mirkotan and V.A. Smorodinov

**33**. N 6. P. 83

## Concerning one problem of the new nonlinear electrodynamics

## Concerning one problem of the new nonlinear electrodynamics

### L.V. Nastina

**33**. N 6. P. 86

## Ordering in Se-Te alloys

## Ordering in Se-Te alloys

### A.A. Katsnel'son, V.I. Kruchinkina, I.I. Popova, and V.M. Silonov

**33**. N 6. P. 88