Representing the potential of a general body as a series convergent everywhere outside its surface
Representing the potential of a general body as a series convergent everywhere outside its surface
N.A. Chuikova
Mittag-Loffler expansion has been used for the reciprocal of the distance as the potential of a planet in terms of spherical functions, with the series converging everywhere outside the surface; an estimate is made of the representativeness.
Show AbstractEffects of external factors on acoustoelectronic storage in a piezoelectric-semiconductor structure
Effects of external factors on acoustoelectronic storage in a piezoelectric-semiconductor structure
I.Yu. Solodov, G.Yu. Timofeeva
A study has been made of the effects of evacuation, transverse electric fields, illumination, and temperature change on acoustoelectronic storage in a layered piezoelectric-semiconductor structure. Some parameters have been determined for the surface states in the semiconductor, and information has been obtained on the trapping and recombination kinetics.
Show AbstractEffects of previous illumination on the conductity of an undoped film on amorphous, hydrogenated silicon
Effects of previous illumination on the conductity of an undoped film on amorphous, hydrogenated silicon
I.A. Kurova, N.N. Ormont, V.D. Podrugina
Observations have been made on the conductivity changes in a-Si:H films and in the activation energy after preliminary illumination, and also on the suppression of the temperature-dependent quenching of the band-band photoconductivity and superlinearity in the lux-ampere characteristics; explanations are given via the formation of an additional concentration of broken silicon bonds, which acquire a donor or acceptor character and correspondingly displace the Fermi level $E_F$ upwards or downwards in accordance with the equilibrium position of that level in the film. The recombination model is discussed.
Show AbstractВлияние спин-орбитального взаимодействия на частоты плазменных колебаний в полупроводниках
Влияние спин-орбитального взаимодействия на частоты плазменных колебаний в полупроводниках
М.Е. Маринчук
Методом причинных функций Грина исследуется электронная плазма в полупроводниках со спин-орбитальным взаимодействием в отсутствие магнитного поля. Найдена поправка к предельной частоте плазменных колебаний, обусловленная этим взаимодействием.
Show AbstractMuon photodecay in a magnetic field
Muon photodecay in a magnetic field
V.Ch. Zhukovskii, G.V. Kormil'tsev, P.A. Eminov
The angular distribution and spectrum have been calculated for the lepton photodecay probability in a magnetic field. The study is made of how the probability is dependent on the field strength, lepton spin orientation, mass ratio of the initial and final leptons, and wave circular polarization direction.
Show AbstractQuantum limits to errors of measurement in distributed systems
Quantum limits to errors of measurement in distributed systems
Yu.I. Vorontsov
Quantum limits have been found to the error in measuring the length of a rod, the coordinates of the ends, and the voltage at the end of a long line for various measurement methods. It is shown that the stroboscopic method of rod length measurement does not give an increase in sensitivity in a gravitational-wave experiment. The strobing method can be effective only in observation on one of the normal coordinates of the rod.
Show AbstractEmission from a relativistic particle on part of its path
Emission from a relativistic particle on part of its path
R. Gonzales-Felippe, Yu.G. Pavlenko
It is shown that canonical perturbation theory enables one to calculate any radiation effects in classical electrodynamics in a unified fashion. The first part of the paper deals with spontaneous and induced emission from particles for a wide range of paths. The spectral and angular characteristics of the radiation have been determined. The second part of the paper derives expressions for the scattering cross sections of particles for electromagnetic waves in the presence of an external field. The results correspond to the crossed-field model.
Show AbstractThe matter field in the Kaluza-Klein theory with spontaneous symmetry breaking
The matter field in the Kaluza-Klein theory with spontaneous symmetry breaking
A.P. Demichev, N.P. Nelipa, M. Chaichian
An expression is derived for the matter-field lagrangian in a proposed approach to the Kaluza-Klein theory. It is shown that the transformation features of these fields are equivalent to nonlinear realizations of the symmetry group.
Show AbstractA method of determining the existence of weakly bound states in a multiparticle quantum system
A method of determining the existence of weakly bound states in a multiparticle quantum system
V.V. Komarov, A.M. Popova
Spectral analysis of the Schr$\stackrel{..}{o}$dinger operator for a multiparticle system provides conditions on the two-particle potentials such that if obeyed, a system of N particles has bound states of zero energy even though the subsystems of n particles, $n \subset \{N—1, N—2, ... 2\}$, do not have either bound or virtual states.
Show AbstractElectron capture by hydrogen-type and helium-type light-element ions
Electron capture by hydrogen-type and helium-type light-element ions
Yu.A. Shurygina, A.M. Popova, Ya.A. Teplova, Yu.A. Painberg
The central-parameter method is applied to the energy range 25-1000 keV/nucleon to examine the formation of metastable helium-type and lithium-type ions during one-electron capture in the collision of light ions with helium atoms. Comparison with experiment shows that the model gives a qualitatively correct description of the cross section ratio for one-electron capture by ions in the ground state and in metastable states.
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