A high-voltage nanosecond pulse generator for exciting diffuse gas discharges at atmospheric pressure

A high-voltage nanosecond pulse generator intended for studying diffuse discharges in gases at pressures close or equal to atmospheric pressure is described. The generator produces pulses with an ∼50-ns (at half-height) duration, a >50-kV voltage amplitude, a 10- to 12-ns rise time, and a pulse repetition rate of up to 1 kHz across an equivalent load (1.3 kΩ, 15 pF). The generator is based on available cheap components, and the amplitude (energy) of output pulses and their repetition rate can be promptly regulated in a wide range. The generator is immune to noise and reliable.     

Measurement accuracy of the SG-3 laser rangefinder

Translated from Izmeritel'naya Tekhnika, No. 11, pp. 43–45, November, 1990.     

Steel powder with a metastable austenite structure

The effect of technological parameters of fabrication on wear resistance and phase transformations in the surface layer of chromium-nickel steel PK110Kr2N is studied. A statistical model is proposed for prediction of the content inhomogeneity of the steel. Enhanced abrasive wear resistance is attained by appropriate transformations in the surface layer.Scientific-Research Institute for Problems of Powder Technology and Coatings, Perm. Translated from Poroshkovaya Metallurgiya, Nos. 3–4, pp. 42–47, March–April, 1994.     

Local Environment and Migration in Nickel Metal of 57Co Impurity Atoms Formed by a Nuclear Reaction

The local environment of ^{5 7}Co impurity atoms formed in nickel metal by the ^{5 8}Ni(,p) reaction was studied by emission Müossbauer spectroscopy. The positions of ^{5 7}Co atoms after irradiation and short isochronous (1800 s) heat treatments of the cyclotron targets at 500-1100 K were evaluated. The processes of impurity transfer during treatment of irradiated targets were analyzed. The rate of impurity transfer is determined by the damage of the irradiated metal lattice and stabilization forms of impurity atoms (i.e., their location in the substitution sites or at the crystallite grain boundary).