Induced IR emission in resonant alkali-metal atom excitation
Induced IR emission in resonant alkali-metal atom excitation
N.V. Znamenskii, L.S. Kornienko, V.E. Mnuskin, V.I. Odintsov, A.N. Tokareva, B.F. Trinchuk
Efficient induced IR radiation production is possible in an alkali-metal vapor under conditions of isolated resonance with transitions between the upper levels.
Show AbstractAn automated system for recording the Raman spectra of globular proteins
An automated system for recording the Raman spectra of globular proteins
V.G. Pirogov, V.A. Sokolina, M.V. Fedorov, Yu.I. Khurgin, N.G. Tserevitinova, A.Yu. Chikishev
A laser Raman spectrometer has been built to record the weak signals characteristic of biopolymers. The apparatus works with photon counting and synchronous detection, and it employs long-time signal accumulation. The spectrometer is interfaced to a minicomputer. The effects of hydration on the Raman spectrum of $\alpha$-chymotrypsin have been examined.
Show AbstractAmplitude, phase, and frequency characteristics of a multipass-mode gas laser
Amplitude, phase, and frequency characteristics of a multipass-mode gas laser
P.V. Korolenko, V.G. Makarov, S.A. Stepina
An He-Ne laser operating at o.63 μm has been used in examining the spatial structure and spectrum on the excitation of multipass modes. The excitation conditions for these modes with various ray paths have been considered. A high degree of spatial coherence exists in the outgoing beams.
Show AbstractMagnetic parameters of the borehole basalts from the Waring plateau
Magnetic parameters of the borehole basalts from the Waring plateau
I.V. Kashinskaya, K.V. Popov, V.I. Trukhin
Magnetic studies have been performed on 23 specimens of oceanic basalts from boreholes 338 and 342 (38th leg of the Glomar Challenger, 1974), which reveal alternation in the signs of the magnetic deviation $j_0$ for the natural residual magnetization vector $I_n$ with depth. The most likely reason for the forward magnetization of a quarter of the specimens is self-reversal of $I_n$ in situ by a magnetostatic mechanism. The reverse-magnetized basalts were produced in fields of the corresponding polarity.
Show AbstractPeriodic structure formation in lateral convection in salt water
Periodic structure formation in lateral convection in salt water
V.M. Blinkov, A.M. Gusev
Studies have been made on.the convection currents arising in stably stratified saline water in a rectangular basin with unequally heated walls. The structure and production conditions have been determined for undamped perturbations.
Show AbstractCoherent velocity oscillations in detached flows and planar turbulent mixing layers
Coherent velocity oscillations in detached flows and planar turbulent mixing layers
E.P. Anisimova, A.A. Speranskaya
Laboratory data are presented on coherent-structure nucleation in the mixing zone arising at the boundary between a suspension flow and immobile pure water. When the initial density of the suspension flow is reduced, the Strouhal number tends to the value characteristic of the mixing layer existing in a density-nstratified detached flow.
Show AbstractOzone transport by middle-atmosphere flows
Ozone transport by middle-atmosphere flows
M.S. Rakova, A.Kh. Khrgian
The changes in the total amount of ozone X are considered in the passage of cold and warm fronts and in cyclones and anticyclones. There is a regular decrease in X on warm-air influx and an increase in cold air. Fronts entrain air not only from the troposphere but also from the stratosphere, and the larger vortices have the greatest effects on the horizontal and vertical ozone distributions.
Show AbstractParticular solutions to a nonstationary photogravitational three-body problem
Particular solutions to a nonstationary photogravitational three-body problem
L.G. Luk'yanov
The three-body photogravitational problem with variable light pressure is considered. It is shown that triangular and coplanar solutions do not exist, but that a single rectilinear solution may.
Show AbstractThe local distributions of iron and manganese atoms in intermetallides in the $Er(Fe_{1-x}Mn_x)_2$ quasibinary system
The local distributions of iron and manganese atoms in intermetallides in the $Er(Fe_{1-x}Mn_x)_2$ quasibinary system
A.S. Ilyushin, D.A. Castro, I.A. Mahmud
M$\stackrel{..}{o}$ssbauer spectroscopy has been applied to the local distributions of atoms in the 3d sublattices of the intermetallides in the $Er(Fe_{1-x}Mn_x)_2$ quasibinary system. Atomic ordering occurs.
Show AbstractSputtering calculations for a nickel single crystal in a magnetic phase transition
Sputtering calculations for a nickel single crystal in a magnetic phase transition
V.N. Samoilov, V.A. El'tekov, V.E. Yurasova
Computer simulation has been applied to the atomic binding energy on (001) faces of Ni, the change in sputtering coefficient for a (001) Ni face bombarded by normally incident $Ar^{+}$ ions of energy 200 eV in a magnetic phase transition, and variations in spatial distribution of the sputtered particles. The change in sputtering coefficient in the magnetic transition is in agreement with the available experimental evidence.
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