Vol 43, No 11 (2016)

The PAMELA experiment on the study of cosmic rays in a wide energy range was performed onboard the Resurs-DK1 spacecraft from June 2006 to February 2016. The data on antiproton fluxes in the near-Earth space play an important role for this field of physics. Their detection by the PAMELA spectrometer is possible using two independent detectors: the track system in a magnetic field and the position-sensitive calorimeter (in the low-energy region, <1 GeV). The presented technique for identifying antiprotons is based on the analysis of tracks of the antiproton and secondary charged mesons produced during its annihilation in the calorimeter. This technique allows identification of antiprotons with energies of 200–800 MeV, independently confirming the data of a magnetic analysis and increasing the statistics due to the larger geometrical factor of the calorimeter in comparison with a track system.

Inspection methods for space objects (SOs) using an active apparatus with onboard detecting equipment are considered. A method based on sequential maneuvering of a spacecraft inspector in the equatorial plane to the points of convergence with various inspected objects in crossed orbits is proposed.

The formation of beams with wavefront screw dislocation appeared when circularly polarized light passes through a light-induced orientation defect formed in a homeotropically oriented NLC at the surface photorefractive effect is calculated. NLCs with negative and positive low-frequency dielectric anisotropy are considered. The calculated data are compared with the results of previously performed experiments.