An experimental check on the thermalization conditions for an electron flux after exposure to a UHF field
An experimental check on the thermalization conditions for an electron flux after exposure to a UHF field
M.N. Devyatkov, G.I. D'yakonov, G.I. Ovchinnikova
Temperature measurements are reported for an electron flux exposed to a UHF field and passing through a dense space-charge region. It is shown that certain combinations of UHF frequency and current density cause the perturbation to be transformed into electron heating. The experimental results confirm previous theoretical estimates for the flux thermalization conditions.
Show AbstractThe roles of various relaxation mechanisms in the nonlinear spectroscopy of condensed media
The roles of various relaxation mechanisms in the nonlinear spectroscopy of condensed media
V.M. Petnikova, S.A. Pleshanov, V.V. Shuvalov
A study is made on nonlinear-spectroscopy methods that employ resonant parametric interactions on one-photon electron transitions. A model for the nonlinear. susceptibility is constructed that incorporates several types of relaxation. It is shown that these can be distinguished and identified by experiment.
Show AbstractFrequency-selective action on nonlinear waves in an acoustic cavity
Frequency-selective action on nonlinear waves in an acoustic cavity
V.E. Gusev
A mathematical technique has been developed for analyzing the excitation and interaction of nonlinear waves in an acoustic resonator with complex dissipative behavior. It is shown that it is possible to raise the quality factor by introducing additional absorption at selected frequencies.
Show AbstractA colored-fermion triplet in the field of a polarized Yang-Mills wave
A colored-fermion triplet in the field of a polarized Yang-Mills wave
V.R. Khalilov, V.C. Perez-Fernandez
An exact solution has been derived to Dirac's equation in a plane-wave Yang-Mills field of special configuration.
Show AbstractFeatures of the thermal and dynamic structures of the active ocean layer in the region of banks
Features of the thermal and dynamic structures of the active ocean layer in the region of banks
M.B. Timonov, N.K. Shelkovnikov
Results are presented on the dynamic and thermal structures of the active ocean layer in the regions of the Ampere and Whale Banks, which were obtained on the eleventh voyage of the R/V Academician Petrovskii. The field observations indicate that there are regions above the crests of the bank that differ substantially from the surrounding water masses in thermal and dynamic characteristics. The features are given a qualitative explanation in terms of Taylor's column theory.
Show AbstractKinetic cooling in a binary molecular-gas mixture with two-quantum vibrational energy exchange
Kinetic cooling in a binary molecular-gas mixture with two-quantum vibrational energy exchange
U.S. Dzhurabekov, A.I. Osipov
Calculations have been performed on the kinetic cooling effect in a binary mixture of molecular gases on two-quantum vibrational-energy exchange between the components. It is shown that this effect can be detected by experiment for $CH_3F-N_2$ and $СН_4-О_2$ mixtures, which enables one to determine the probabilities of two-quantum vibrational-energy exchange.
Show AbstractLaser diagnosis of nonstationary protoplasm flow in algal cells on membrane stimulation
Laser diagnosis of nonstationary protoplasm flow in algal cells on membrane stimulation
E.B. Chernyaeva
A study has been made of the effects of external conditions on the flow recovery in the protoplasm of Nitella algae after a halt produced by membrane excitation. The protoplasm flow speed has been measured with a laser Doppler spectrometer working with a US-1010 computer in real time. It has been found that under otherwise constant conditions, the recovery kinetics may be determined by the parameters of the stimulating pulse and the illumination conditions.
Show AbstractDye picosecond pulse generation with self-modulated Q switching
Dye picosecond pulse generation with self-modulated Q switching
V.M. Petnikova, S.A. Pleshanov, V.V. Shuvalov
A study has been made of picosecond pulse generation by dye lasers working with heavy gain saturation. Several forms of such laser are proposed that differ in reliability and design. Wide-range adjustment is possible in pulse length and spectrum. Spectrum-bounded pulses of length down to 3.5 psec have been obtained.
Show AbstractThe accuracy in potential recovery in an inverse scattering problem ($l\ge 1$)
The accuracy in potential recovery in an inverse scattering problem ($l\ge 1$)
G.A. Ivanov, A.M. Popova
The paper discusses the error in recovering potentials within the framework of exactly soluble quantum models for the case ($l\ge 1$). It is shown that even for $l=1$, one can obtain reliable information on the behavior of the potential in this way only at large distances.
Show AbstractExtracting the beam from a high-energy cyclotron via an integer resonance
Extracting the beam from a high-energy cyclotron via an integer resonance
L.A. Sarkisyan
It is shown to be possible to provide highly efficient beam extraction from cyclotrons of pion and kaon factory type by means of an integer-resonance mechanism: on account of the closed-orbit distortion in the zone of an integer resonance before it occurs. Numerical simulation results are given on proton extraction from a cyclotron on the basis of the resonance $Q_r=2$.
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