Journal of Experimental and Theoretical Physics 





ZhETF, Vol. 68, No. 2, May 1975
(English translation  JETP,
Vol. 41, No. 2, May 1975
)
The issue content is only available in English translation!
GRAVITATION, ASTROPHYSICS 
Trajectories and the radiation emitted by particles falling into a rotating black hole

369

Gravitational synchrotron radiation of a particle in Kerr and Schwarzschild fields

377

Three types of solutions of the EinsteinMaxwell equations

387

NUCLEI, PARTICLES, AND THEIR INTERACTION 
Concerning the production of electronpositron pairs from vacuum

392

Effect of angular discrimination of xray transition radiation on particle separation efficiency

400

Operator approach to quantum electrodynamics in an external field. Electron loops

405

Critical distance in collision of heavy ions

421

Inverse problem of scattering theory in complex λ plane in the presence of a Coulomb field with allowance for absorption

432

Elastic scattering with allowance for a closed channel: the processes dμ + p, pμ + p, dμ + d, and tμ + t

437

ATOMS, SPECTRA, RADIATION 
Some features of the radiation from sources moving in refractive media

447

Microwave discharge in a quasioptical resonator

452

Properties of photon echo on broad spectral lines

456

Coherence properties of radiation and multiphoton resonances

465

Contribution to the theory of superluminescence in a dispersive medium with molecular relaxation

469

A nonlinear theory of broadening and a generalization of the KarplusSchwinger formula

479

Nonadiabatic transition in triatomic systems

493

Contribution to the theory of resonant fourwave parametric interactions

506

PLASMA, GASES 
Relaxation of the electron distribution in a parametrically unstable plasma located in a strong electromagnetic field

518

Electron beam excitation of low frequency oscillations in a plasma by application of external perturbations

530

Absolute instability of focused waves in a plasma

536

Active submillimeter diagnostics of the plasma of a microwave pinch discharge at high pressure

547

SOLIDS, LIQUIDS 
Role of selffocusing in the damage to transparent dielectrics by laser radiation

562

Calculation of the effective mass of an electron in a periodic field near the edge of an energy band

568

Hyperfine fields at Fe^{57} nuclei in Gd_{x}Y_{1 x}Fe_{2} alloys

577

Effective magnetic field at the ^{82}Kr nucleus in iron

581

Some features of the behavior of the thermal conductivity of ferrites in the vicinity of magnetic phase transitions

586

Spectrum of polarons in a magnetic field. States in the forbidden band

599

On the polarization characteristics of Mössbauer coherent scattering by perfect magneticordered crystals

608

Kinetic phenomena and charge discreteness effects in granulated media

623

Dynamics of a classical electron in a dense medium of disordered scatterers

641

Anomalies in the drag electron dislocation force in a phase transition of order 21/2

649

Investigation of the transition of FeCO_{3} from the antiferromagnetic to the paramagnetic state under the influence of a strong magnetic field

659

Electronnuclear magnetic resonance in a thin ferromagnetic film

672

Intrinsic spin wave relaxation processes in yttrium iron garnets

677

Elastic and photoelastic properties of gadolinium molybdate crystals near a phase transition

689

Lens effect due to the pressure of light on the surface of a transparent dielectric

698

Magnetoacoustic investigation of the electron structure of gallium under pressure

711

Lowtemperature spin configuration of iron ions in erbium orthoferrite

721

Magnetic properties of singlecrystal powders of YFeO_{3}

727

Oscillations of the critical temperature in thin film superconductordielectric structures

736

Magnetic phase transitions in orthoferrite with a Morin point

743

Effect of light on strainstimulated light emission in ZnS crystals

750

Nonequilibrium states in superconducting tunnel structures

756

Josephson effect in wide superconducting bridges

766




