Modification of gamma radiation spectrum in the proton field of a power spectrum
Modification of gamma radiation spectrum in the proton field of a power spectrum
I.P. Ivanenko, V.V. Sizov
This paper is devoted to studies of changes in the shape of a spectrum of highenergy gamma radiation as it travels through the photon field of a power spectrum (X-radiation in the active zone of compact gamma radiation sources). A relationship is established between the characteristics of the field and the gamma radiation spectrum.
Show AbstractMechanisms of mutual synchronization of two resonance-coupled oscillators
Mechanisms of mutual synchronization of two resonance-coupled oscillators
Yu.I. Kuznetsov, I.I. Minakova, M.I. Shchedrina
Mechanisms of mutual synchronization of coupled oscillators are analyzed for different types and magnitudes of the coupling. It is shown that mechanisms of transition from multifrequency to single-frequency operation of separate oscillators depend on the $Q$-factor and detuning of the coupling circuit.
Show AbstractNonlinear saturation of the wave-magnetized electron beam interaction in a dielectric waveguide (optimization of Compton process in the Cerenkov emitter)
Nonlinear saturation of the wave-magnetized electron beam interaction in a dielectric waveguide (optimization of Compton process in the Cerenkov emitter)
V.K. Grishin, I.F. Lenskii
This paper considers nonlinear interaction of a magnetized electron beam with a radiated wave in a dielectric waveguide at the stage of process saturation due to the capture of particles by the wave. The Compton mechanism of radiation excitation in devices of the Cerenkov emitter type is optimized on the basis of conservation laws and analysis of nonlinear solutions of the Vlasov kinetic equation. Beam density distributions corresponding to the maximum efficiency are presented.
Show AbstractАнализ процесса рекомбинации атомов водорода на поверхности твердых тел
Анализ процесса рекомбинации атомов водорода на поверхности твердых тел
Analysis of recombination of hydrogen atoms on solid surfaces
A method of theoretical description of recombination of hydrogen atoms on solid surfaces is proposed which is based on scattering theory for several quantum particles.
Show AbstractElectron structure and optical properties of BaO
Electron structure and optical properties of BaO
A.A. Grigorenko, V.S. Stepanyuk, A.A. Katsnel'son, O.V. Farberovich, V.V. Mikhailin
A completely self-consistent band structure calculation was performed for BaO. A theoretical energy dependence of the imaginary part of the permittivity function was obtained for the first time. The results obtained show satisfactory agreement with experimental data.
Show AbstractClassical gravitational effects in the relativistic theory of gravitation
Classical gravitational effects in the relativistic theory of gravitation
P.V. Karabut, Yu.V. Chugreev
Classical gravitational effects (light beam deflection, time lad of radio signals, and displacement of the pericenter of a satellite's orbit) in the field of a Kerr-Newman source are considered in the relativistic theory of gravitation. Exact expressions for the magnitudes of the effects and their post-Newtonian asymptotic forms are obtained.
Show AbstractOn the contribution of the Higgs sector to the transverse form factor and anomalous electron moment in a magnetic field
On the contribution of the Higgs sector to the transverse form factor and anomalous electron moment in a magnetic field
Yu.M. Loskutov, V.V. Skobelev
The contribution of leading diagrams with Higgs bosons to the form factors of a vertex $ее\gamma$ and to the anomalous magnetic moment of an electron in a magnetic field $В$ is calculated in a single-loop approximation. It is noted that for $B\to 0$ the diagram with an electron loop yields a zero result. For $В = 0$ and $M\sim 6$ GeV, the contribution of the Higgs diagram, which is topologically identical to a diagram of quantum electrodynamics, is equivalent by the order of magnitude to the contribution of the six-loop quantum electrodynamics diagrams.
Show AbstractDescription of resonance states of helium-like ions
Description of resonance states of helium-like ions
V.V. Komarov, A.M. Popova, V.G. Airapetyan
A method has been proposed for constructing the resonance localization regions of helium-like ions. The upper estimate for the resonance halfwidths in the system has been derived. Resonances in helium-like ions are shown to be accumulated at real thresholds.
Show AbstractHard production of charmed quarks
Hard production of charmed quarks
A.P. Kryukov, D.A. Slavnov
The process of production of charmed particles in a proton-proton collision is considered. The results of analytical computer calculations of the cross section for the main subprocess, namely, the gluon-gluon production of a charmed quark pair, are presented. It is shown that the main contribution to the cross section is provided by third order perturbation theory diagrams.
Show AbstractPost-Newtonian effects in the motion of two bodies of comparable masses
Post-Newtonian effects in the motion of two bodies of comparable masses
V.I. Denisov, V.G. Turyshev
The motion of binary systems consisting of self-gravitating bodies of comparable masses is examined within the framework of an extended version of the parametrized post-Newtonian formalism. It is shown that the dynamic characteristics of moving bodies significantly depend on a new parameter $\tau$. A possible method of evaluating this parameter in treating the observation data obtained from the study of the pulsar system PSR 1913+16 is discussed.
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