Vol 46, No 5 (2019)

A rare event observed in a nuclear emulsion is reported. The RUNJOB Russian-Japanese balloon experiment detected the interaction of a high-energy neutral particle in a nuclear emulsion plate of an X-ray emulsion chamber exposed in 1999.

It is shown that the features of the development of the self-initiated volume discharge in gas mixtures of a non-chain electrochemical HF laser are caused by self-organizing processes of dissipative structures representing plasma diffusion channels. The formation features of diffusion channels in the gas-discharge plasma of the self-initiated volume discharge are determined.

The theory of sources predicts that in the G²-approximationa dependence of the external metric of a sphere on the radius of a material sphere (as well as on its energy-momentum tensor) appears. We show that in the G²-approximation the deflection of a massless particle in the dependence upon the radius manifests itself only in modification of the particle trajectory, not in the total deflection angle. In particular, the shortest distance from the sphere to the trajectory depends upon the sphere radius.

Quasi-static magnetic field generation caused by the oblique incidence of a p-polarized electromagnetic wave on a semi-infinite plasma, in which the electron density exceeds the critical value, is considered. It is shown that the appearance of magnetic fields is caused by excitation of a nonlinear surface current at the zero harmonic of the pump wave.

Protective properties of a material containing ferroboron and polyethylene are experimentally studied. The protection factors in the case of the interaction with fast neutron and gamma-ray fluxes emitted by a water phantom exposed to a proton beam with energies of 50, 100, and 130 MeV are determined.