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Results of a study of the effect of a wide range of cooling rates in thermal and thermomagnetic treatment on the magnetic properties (permeability, coercive force, and coefficient of squareness) of amorphous strips from magnetically soft cobalt-based alloy AMAG 176 of the Co – Fe – Ni – Si – B system are considered. Variation of these properties is discussed.

1. The magnetic properties of strips in the initial state depend to a considerable extent on their thickness and length. This shows that there is a correlation between the magnetic properties and the conditions of shaping the strips (cooling rate). 2. Heat treatment and thermomagnetic treatment eliminate almost completely the nonuniformity of magnetic properties along the strips and improve them considerably. 3. After heat treatment and thermomechanical treatment the magnetic properties do not depend on the thickness of the strips but the dynamic properties (permeability at high frequencies and losses) change: with decreasing thickness permeability increases, and losses decrease.

(1993). Space ecology and observational astronomy. Astronomical & Astrophysical Transactions: Vol. 4, No. 1, pp. 47-48.

An investigation is made of the influence of a transverse macroinhomogeneity in a solid state laser on the emission kinetics. It is shown that when a fairly definite minimum is located in the central part of the transverse intensity distribution, the emission is in the form of spontaneous fluctuations whose growth increment increases with increasing depth of this minimum. The results obtained are in agreement with the experimental data on the correlation between the transverse field distribution and the laser emission kinetics.

1. Intermediate annealing of ingots, forgings, and especially strips improves the mechanical properties and grain refining of copper alloys with 0.01–0.03% B. 2. Intermediate homogenizing annealing of forgings lowers the initial softening temperature of cold-rolled strips of the alloy with ∼0.01% B from 200–300 to 150°C.

An investigation was made of the spectral characteristics of the radiation emitted by a ruby laser with a pronounced transverse field structure when a narrow spectral line of a second laser was injected into the resonator of the first laser as a stimulus. The dynamics of the emission spectrum was found to be governed by the gap between the frequency of the stimulating radiation and the maximum of the gain profile.