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941.
Diffusion-doped layers with a green emission band dominating in the room-temperature luminescence spectrum are obtained by
annealing single-crystal zinc selenide substrates in tellurium and zinc vapors. 相似文献
942.
A new formula that relates the acoustic Grüneisen parameter to the Poisson ratio is suggested on the basis of the previously derived expression for this parameter. 相似文献
943.
Voitsekhovskii A. V. Grigor'ev D. V. Korotaev A. G. Kokhanenko A. P. 《Russian Physics Journal》2004,47(7):764-772
The effects of wide- and narrow- variband layers on the charge-carrier concentration and mobility in the MBE-grown epitaxial CMT structures measured by the Hall-effect method are studied by numerical simulation. The dependence of the relative difference between the experimentally obtained effective values of electrophysical parameters and those of an epitaxial coating on the variband-layer characteristics is discussed. An analysis of this dependence shows that the manner in which the broad-band and narrow-band layers affect the resulting parameters is inequivalent. The calculations suggest that the effect of the wide-band layer on the experimental electrophysical parameters can be neglected. In the case of the narrow variband layer, however, the difference between the electophysical parameters strongly depends on the variband-layer parameters and the concentrations of ionized donor and acceptor centers. 相似文献
944.
An assumption that the most probable fragments of spontaneous low-energy fission inherit the quantum structure of initial nuclei is discussed. The energies Q of spontaneous decay into two fragments of nuclei with 2 < Z < 102 are estimated. The transition from negative to positive values of Q occurs near Z = 40. 相似文献
945.
Russian Physics Journal - 相似文献
946.
The patterns of absorption and reflection of an ultrashort laser pulse by a plasma with a solid-state density, which are realized in the mode of the normal skin effect, are studied. It is shown that a decrease in low-power pulse duration shorter than the period corresponding to the fundamental frequency of radiation leads to an increase in the absorption coefficient. If the pulse power is so high as to provide electron heating during a time shorter than the reciprocal fundamental frequency, nonlinear suppression of absorption takes place and the spectrum of the reflected radiation contains odd harmonics of the fundamental frequency. 相似文献
947.
948.
949.
Acoustical Physics - A method for calculating the resulting field of an opaque radiator and the field scattered by an inhomogeneous inclusion in a planar layered waveguide is described. The... 相似文献
950.
G. M. Ter-Akopian A. V. Daniel A. S. Fomichev G. S. Popeko A. M. Rodin Yu. Ts. Oganessian J. H. Hamilton A. V. Ramayya J. Kormicki J. K. Hwang D. Fong P. Gore J. D. Cole M. Jandel J. Kliman L. Krupa J. O. Rasmussen I. Y. Lee A. O. Macchiavelli P. Fallon M. A. Stoyer R. Donangelo S. -C. Wu W. Greiner 《Physics of Atomic Nuclei》2004,67(10):1860-1865
Ternary fission of 252Cf was studied at Gammasphere using eight ΔE×E particle telescopes. Helium, beryllium, boron, and carbon light charged particles (LCPs) emitted with kinetic energy more than 9, 21, 26, and 32 MeV, respectively, were identified. The 3368-keV γ transition from the first 2+ excited state in 10Be was found and the population probability ratio N(2+)/N(0+) = 0.160 ± 0.025 was estimated. No evidence was found for 3368-keV γ rays emitted from a triple molecular state. For the first time, charge distributions are obtained for ternary fission fragments emitted with helium, beryllium, and carbon LCPs. 相似文献