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The sensitivity of the albedo electron method in density determinations on some P/M materials is equal to 0.1%. The method offers an accurate and rapid nondestructive means of examining the distribution of porosity in specimens. Use of an accelerator in determinations by this method ensures an appreciable depth of control, enables the size of the control zone to be varied, and increases control rate tens of times compared with the hydrostatic weighing technique.

The paper reports the results of measurements of the space-time properties of space charges in polymethyl methacrylate (PMMA) disks after a high-energy injection of electrons. Investigations by four independent methods (i.e., the through-probing, current, electrostatic, and sectioning methods) reveal that, first, the charge distribution is radially inhomogeneous regardless of the small ratio of the specimen thickness to diameter (1/10 to 1/30) and, second, space-time relaxation of charges occurs in a singular manner at diameters of 32, 65, and 130 mm.

Measurements have been made of the energy distributions of protons passing through NaCl, KCl, Si, and Ge single crystals at various angles with respect to the {100} and {110} planes. The fraction of protons passing through lattice channels has been evaluated, and its dependences on the angle of incidence, the chemical composition of the sample, and the proton energy have been found.

The effects of the amplitude nonuniformity of the magnetic field in a betatron on the forced and betatron radial oscillations of electrons during extraction (or discharge toward the target) at the end of the acceleration cycle are examined. The amplitude and phase dynamics of radial betatron oscillations are studied by means of an analog computer.

High-alumina, zircon, chamotte-kaolin, zirconia, and clay-graphite end nozzles were tested in a semi-continuous casting plant during the pouring of stainless steel in the pouring device, and SP-25 high-alumina and zircon nozzles were tested in the intermediate ladle.

The angular distribution of electrons having an initial energy of 6.74 MeV has been studied after passage through C, Al, Cu, Sn, and Pb samples having thicknesses in the range in which multiple-scattering theory does not apply.

A study was made of the channeling of 6. 72 MeV protons in a silicon crystal at 100–800 °K. The experimental dependence of the limiting channeling angle agrees with the theoretical prediction. A relation is found between the relative number of channeled protons and the temperature.

A magnetic β-spectrometer has been used for a thorough study of the energy distribution of electrons having an initial energy of 6.74 MeV after passage through C, Al, Cu, Sn, and Pb samples up to 0.5 R in thickness.