Solid-state spectroradiometer for ecological studies in the 1.5-MM transparency window of the atmosphere

We briefly describe the features of the functional diagram and design of an uncooled solid-state objects. The main characteristics of the spectrometer are presented. __________ Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 49, No. 4, pp. 294–299, April 2006.     

Prediction of the penetrating power of metallic shaped charge jets subjected to an intense electric current pulse

A method for evaluating the penetrating (piercing) power of shaped charges under the condition when an intense electric current pulse is applied to a shaped charge jet is developed. The buildup of waist-type MHD instability and the volume damage of the jet material are viewed as possible mechanisms behind a reduction of the penetrating power of a shaped charge jet under the current action. With this method, electrodynamic action parameters that provide a significant reduction of the penetrating power of a shaped charge jet are calculated for shaped charges of various penetrability.     

Alpha particle detector based on micropixel avalanche photodiodes

The main goal of this work is to study the possibility of detecting alpha particles with a micropixel avalanche photodiode (MAPD) in combination with Lutetium Fine Silicate (LFS) scintillators (500 μm thick). The results show that alpha detectors based on the MAPD are expected to be useful in many applications: public security (associated particle imaging for explosives and drugs detection), radioactive contamination monitoring in various environments, and detection of charged particles from nuclear reactions.     

Study of light-induced reorientation of the nematic liquid crystal director by birefringence dynamics

It is proposed to apply the birefringence method to measure the threshold of the light-induced Freedericksz transition and the nonlinearity enhancement factor of nematic liquid crystals by director relaxation dynamics in the light field. A birefringence change is recorded by interference of ordinary and extraordinary components of the light beamaffecting the liquid crystal director orientation. The Freedericksz transition thresholds and nonlinearity enhancement factors are measured for the samples doped with comb-shaped polymers with various degrees of polymerization. The determined thresholds are in agreement with the results obtained by the aberrational self-action method.     

Spin Wave Effects in Transport between a Ferromagnet and a Weyl Semimetal Surface

JETP Letters - We experimentally investigate spin-polarized transport between a ferromagnetic Ni electrode and a surface of Weyl semimetal, realized in a thick WTe2 single crystal. For highly...     

The interrelation between the Faraday effect and the inverse Faraday effect in a magnetic medium and the terahertz inverse Faraday effect in single molecule magnets

The interrelation between the Faraday and the inverse Faraday effects when the magneto-dipole interaction of a sample with an electromagnetic wave is essential has been phenomenologically investigated. This investigation was carried out in the spirit of well-known Pitaevsky’s approach. The terahertz inverse Faraday effect in single molecule magnets has been theoretically studied, the conditions favorable for observing this effect have been formulated.     

A New Generation Pulsed MHD Generator

Doklady Physics - The results of calculation and theoretical investigation for the creation of a powerful (~600 MW) pulsed MHD generator on the combustion products from solid (powder)...