We report the observation results of the hard radiation flashes which accompanied the lightning discharges above the mountains of Northern Tien Shan. Time series of the counting rate intensity, numerical estimations of absolute flux, and energy distribution of accelerated electrons and of (20-2000) keV gamma rays were obtained at the height of 3700 m a. s. l., immediately within thunderclouds, and in closest vicinity (less than or similar to 100 m) to discharge region. Two different kinds of radiation emission events are presented here: a relatively prolonged rise of gamma ray intensity with minute-scale duration (the thunderstorm ground enhancement, TGE) which has preceded a negative field variation, and a short sub-millisecond radiation burst, which accompanied a close lightning discharge in thundercloud. It was revealed also an indication to positron generation in thunderclouds at the time of gamma ray emission, as well as modulation of the neutron counting rate in Tien Shan neutron monitor which was operating at a (1.5-2) km order distance from the region of lightning development.
The events of multiple neutron production under 2000g/cm^2 thick rock absorber were studied at the Tien Shan mountain cosmic ray station, at the altitude of 3340m above the sea level. From comparison of the experimental and Geant4 simulated neutron multiplicity spectra it follows that the great bulk of these events can be explained by interaction of cosmic ray muons with internal material of the neutron detector. In synchronous operation of the underground neutron monitor with the Tien Shan shower detector system it was found that the characteristics of the muonic component of extensive air showers which is seemingly responsible for generation of the neutron events underground do change noticeably within the energy range of the knee of primary cosmic ray spectrum. Some peculiar shower events were detected when the neutron signal reveals itself only ∼(100–1000) μs after the passage of the shower particles front which probably means an existence of corresponding delay of the muon flux in such events.
Formation of competencies in the field of information security is becoming one of the key elements of the information culture of modern man. Therefore, the search for ways to improve the effectiveness of the educational process on information security has become more active. In this paper, the application of problem teaching to improve creative activity of students has been proved. This technology of training is used by us for students of the Faculty of Physics and Technology Al Farabi Kazakh National University. The training course "Information Security in Telecommunication Systems" is the main component of the Bachelors degree program in the specialty "5B071900-Radio Engineering, Electronics and Telecommunications". One of the key moments of training is the analysis of professional situations, i.e. method when the ability to analyze unrefined vital and production problems develops.
Elastic and inelastic scattering of alpha-particles at 48.1MeV and He-3 at 60MeV on O-16 nuclei has been measured with excitation of states at 6.05 (0(+))-6.13 (3(-)) MeV, 6.92 (2(+))-7.12 (1(-)) MeV and 8.87 (2(-)) MeV. The center-of-mass beam momenta are the same for these two strongly absorbed particles. Analysis of angular distributions was performed in the frameworks of the optical model, the coupled channels method and the Distorted Wave Born Approximation (DWBA). A good description of experimental data was obtained over the full angular range without taking into account the spin-orbit interaction and the cluster transfer mechanism with real potentials that have volume integrals of about 400MeV fm(3). Collective and microscopic models were used in the analysis of the inelastic scattering. The values of the octupole deformation lengths were extracted. It is shown that nuclear rainbow effects appear not only in the elastic, but also in the inelastic scattering with excitation of the 3(-) state of O-16.
The results of the experiment performed by Kurchatov - Tsukuba - Almaty collaboration at the tandem of Tsukuba University are presented. All the known states of Be-9 up to the excitation energies similar to 12 MeV were observed. It is possible, all the low laying Be-9 states could be decomposed into three rotational bands, each having cluster structure Be-8 core plus a valence neutron in one of the orbits: p(3/2-), s(1/2+) and p(1/2-).