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ZhETF, Vol. 99, No. 4, April 1991
(English translation - JETP, Vol. 72, No. 4, April 1991 )

The issue content is only available in English translation!

GRAVITATION, ASTROPHYSICS

What effect was recorded by the underground detectors and gravitational wave antennas several hours before the observation of Supernova 1987A?

E.N. Alekseev, L.N. Alekseeva, V.N. Zakidyshev, I.M. Kogai, I.V. Krivosheina, V. Ya. Poddubnyi

1057

NUCLEI, PARTICLES, AND THEIR INTERACTION

Transport cross section for small-angle scattering

M.I. D'yakonov, A.V. Khaetskii

1066

Vacuum polarization and nuclear multlpole moments

A.S. Elkhovskii, A.I. Mil'shtein

1068

Antiferromagnetic axion detector

A.I. Kakhidze, I.V. Kolokolov

1077

ATOMS, SPECTRA, RADIATION

Stimulated diffusion backscattering of nanosecond pulses under exposure accumulation conditions

I.V. Gusev, B. Ya. Zel'dovich, V.A. Krivoshchekov, V.V. Shkunov

1082

Role of nonequilibrium velocity distributions in the laser excitation of vibrational-rotational transitions of molecules

A.E. Bazelyan, S.V. Ivanov, M.N. Kogan

1088

Time-dependent adiabatic four-wave mixing in gases

A.R. Karapetyan, B.V. Kryzhanovskii

1103

Branching bifurcations of vector envelope solitons and integrability of Hamiltonian systems

V.M. Eleonskii V. G. Korolev, N.E. Kulagin, L.P. Shil'nikov

1113

PLASMA, GASES

Resonant modification of quasistatic profiles of spectral lines of hydrogen in a plasma under the influence of noncollinear harmonic electric fields

V.P. Gavrilenko

1121

Generation of high-power soft x-ray radiation fluxes using the Angara-5-1 facility

V.D. Vikharev, S.V. Zakharov, V.P. Smirnov, A.N. Starostin, A.E. Stepanov, M.V. Fedulov, V. Ya. Tsarfin

1133

LIQUIDS

Dynamics of point quadrupole vortices and of elliptical vortices in a plane

S.G. Chefranov

1149

Effect of an electric field on collective excitations in He³-B

P.N. Brusov, M.V. Lomakov, V.N. Popov

1166

Blue phases in an electric field: phase transitions, electrostriction

V.K. Dolganov

1179

Frkedericksz structural transition in an orthorhombic nematic

L.G. Fel

1184

SOLIDS

Connection between the real-time technique in thermofield dynamics and the Matsubara approach in quantum statistical physics

A.A. Abrikosov, Jr.

1196

Momentum alignment and spin orientation of photoexcited electrons in quantum wells

N.A. Merkulov, V.I. Perel', M.E. Portnoi

1202

Induced Bose-Einstein condensation of polaritons in crystals of various dimensionalities

V.P. Mis'ko, S.A. Moskalenko, A. Kh. Rotaru, Yu. M. Shvera

1215

On the possibility of forming periodic structures at the surface of stratifying solid solutions

A.A. Fraerman

1230

Superconductive pairing in the Hubbard model with a low occupancy

M.A. Baranov, M. Yu. Kagan

1236

Magnetic cooling of excitons in GaAs

Yu. V. Zhilyaev, V.V. Rossin, T.V. Rossina, V.V. Travnikov

1241

Spin-flip phase transitions in the quasi-ID hexagonal antiferromagnet CsMnBr₃

B. Ya. Kotyuzhanskii

1254

Scaling one-parameter theory of phase transitions

E.B. Kolomeiskii

1266

Wave propagation and scattering in media with anomalously large-scale random inhomogeneities

A. Yu. Val'kov, V.P. Romanov, T.I. Tipyasova

1283

Mechanism for the effect of electric field pulses on the phase memory of the polarization echo

A.I. Validov, B.P. Smolyakov, S.L. Tsarevskii

1302

Determination by the "warm" pulse method of the kinetic characteristics of phonons in crystals with impurities

S.I. Ivanov, A.V. Taranov, E.N. Khazanov

1311

Orientational phase transitions in holmium orthoferrite with magnetic vacancies

G.P. Vorob'ev, A.M. Kadomtseva, I.B. Krynetskii; M. M. Lukina, A.A. Mukhin

1319

Characteristics of magnetic ordering in Y₂(Ni_1-xCo_x)₃ and Y(Ni_1-xCo_x)₃ systems

R.Z. Levitin, A.S. Markosyan, A.B. Petropavlovskii, V.V. Snegirev

1336

Weak crystallization and structural phase transitions in weakly charged polyelectrolyte systems

A.V. Dobrynin, I. Ya. Erukhimovich

1344

Effect of electron-electron interactions on the thermal conductivity of impure metals

D.V. Livanov, M. Yu. Reizer, A.V. Sergeev

1353

Investigation of the immediate environment of Pr³⁺ ions in amorphous and crystalline PrNi₅ by calorimetry and neutron scattering methods

P.A. Alekseev, J.-B. Suck, S.N. Ishmaev, V.N. Lazukov, V.G. Orlov, I.P. Sadikov, M.N. Khlopkin

1369

ERRATA

Erratum: Influence of characteristics of the crystal structure of Nd₂CuO₄ on its magnetic properties [Sov. Phys. - JETP 71, 1179-1185 (December 1990)]

V.A. Blinkin, I.M. Vitebskii, O.D. Kolotii, N.M. Lavrinenko, V.P. Seminozhenko, V.L. Sobolev

1392

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