Polarization Direction Finding and Concealed Ballistic Launch Detection

Russian Physics Journal - The possibility of simultaneous solution of three interrelated inverse problems: polarization direction finding of a flying ballistic object, determination of its...     

Nonlinear Transformations of Pulsed Signals in Radar Tomography

Russian Physics Journal - This paper considers two methods for improving the visibility of hidden objects in radar tomography using nonlinear time transformations of short ultra-wideband (UWB)...     

Application of the High-Speed Photography Technique to Study Pulsed Vacuum Arc Plasma in a Short Gap

Physics of Atomic Nuclei - We studied the process of switching a short vacuum gap, initiated by an auxiliary discharge along the surface of the dielectric by registration images using an...     

Relaxation and none quilibrium radiation behind shock waves in air

This article discusses relaxation behind shock waves in air at velocities from 8 to 12 km/sec. Profiles are obtained for the parameters of the gas behind the front. The populations of the radiating states of the atoms and the molecules are calculated. In a number of spectral ranges the intensity of the radiation passes through a maximum exceeding the equilibrium level. A comparison is made with experimental data obtained in shock tubes. The radiant heat fluxes from the relaxation zone are calculated. The contribution of this radiation to the radiative heating of blunt bodies with flow around them at hypersonic velocities is evaluated.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza., No. 4, pp. 161–174, July–August, 1970.The authors thank their co-workers in the High Temperature Institute of the Academy of Sciences of the USSR, above all, L. M. Biberman, V. S. Vorob'ev, A. N. Larar'kov, and G. É. Norman for their valuable evaluations and for their interest in the work.     

Magnetochemical effects occurring upon treatment of the thin ferromagnetic film surface in an acidic medium

The results from magnetooptical studies of the influence of magnetochemical effects on the surface morphology and local magnetic properties of FeN alloy thin films and thin-film systems that consist of alternating silicon dioxide and FeN layers of submicron thickness, are shown. The dramatic influence of chemical etching on the surface morphology and magnetic characteristics of the investigated samples is revealed.