Probabilistic approach to the analysis of regularities in behavior of material parameters of electronic equipment under action of external fields

It has been shown that the dependence between the parameters of materials of electronic equipment and external fields is determined by the distribution function of the corresponding random variable. The obtained results have been applied to the analysis of a number of physical phenomena

Analysis of random events in physical and chemical processes flowing in materials of semiconductor products under external influences and thermal aging

It has been proposed to consider physical and chemical processes in materials of semiconductor products under external influences and thermal aging as flows of the random events. The mathematical analysis of random events in the physical and chemical processes has been presented. The theoretical results have been applied to the analysis of a number of processes

Physical mechanisms and models of the long-term transformations in radiative recombination observed in n-GaAs under microwave irradiation

Simulation of long-term changes in photoluminescence of n-GaAs after microwave treatment by using the analysis of random events underlying the processes of evolution of the defect structure has been performed. We have shown the agreement of the experimental and theoretical time dependences of the changes in the photoluminescence intensity provided that the distribution of the random variable – time to a random event – obeys the Weibull–Gnedenko law. The mechanisms of transformation of the defect structure, which are based on the dynamics of behavior of dislocations and impurity complexes owing to microwave irradiation, have been presented

Physical mechanisms and models of long-term transformations of radiative recombination in n-GaAs due to the magnetic field treatments

Simulation of long-time changes in photoluminescence of n-GaAs has been performed, and the mechanism of transformation of the defect structure caused by magnetic field treatments has been represented

Status of the Lake Baikal Experiment

We review the present status of the Baikal Underwater Neutrino Experiment and report on neutrino events recorded with the detector stages NT-36 and NT-96.Comment: 5 pages, 4 PostScript figures, uses here.sty and mine.sty, submitted to the Proc. of 5th Int. Workshop on Topics in Astroparticle and Underground Physics (LNGS INFN, Assergi, September 7-11, 1997

Registration of atmospheric neutrinos with the Baikal neutrino telescope

We present first neutrino induced events observed with a deep underwater neutrino telescope. Data from 70 days effective life time of the BAIKAL prototype telescope NT-96 have been analyzed with two different methods. With the standard track reconstruction method, 9 clear upward muon candidates have been identified, in good agreement with 8.7 events expected from Monte Carlo calculations for atmospheric neutrinos. The second analysis is tailored to muons coming from close to the opposite zenith. It yields 4 events, compared to 3.5 from Monte Carlo expectations. From this we derive a 90 % upper flux limit of 1.1 * 10^-13 cm^-2 sec^-1 for muons in excess of those expected from atmospheric neutrinos with zenith angle > 150 degrees and energy > 10GeV.Comment: 20 pages, 11 figure

The Lake Baikal neutrino experiment

We rewiew the present status of the Baikal Neutrino Project and present the results of a search for high energy neutrinos with the detector intermediate stage NT-96.Comment: 3 pages, 2 figures, to appear in the Proceedings of Sixth International Workshop on Topics in Astroparticle and Underground Physics (TAUP99), September 6-10, 1999, Pais, Franc

The Baikal Deep Underwater Neutrino Experiment: Results, Status, Future

We review the present status of the Baikal Underwater Neutrino Experiment and present results obtained with the various stages of the stepwise increasing detector: NT-36 (1993-95), NT-72 (1995-96) and NT-96 (1996-97). Results cover atmospheric muons, first clear neutrino events, search for neutrinos from WIMP annihilation in the center of the Earth, search for magnetic monopoles, and -- far from astroparticle physics -- limnology.Comment: Talk given at the Int. School on Nuclear Physics, Erice, Sept.199

Baikal-GVD

We present the status of the Gigaton Volume Detector in Lake Baikal (Baikal-GVD) designed for the detection of high energy neutrinos of astrophysical origin. The telescope consists of functionally independent clusters, sub-arrays of optical modules (OMs), which are connected to shore by individual electro-optical cables. During 2015 the GVD demonstration cluster, comprising 192 OMs, has been successfully operated in Lake Baikal. In 2016 this array was upgraded to baseline configuration of GVD cluster with 288 OMs arranged on eight vertical strings. Thus the instrumented water volume has been increased up to about 5.9 Mtons. The array was commissioned in early April 2016 and takes data since then. We describe the configuration and design of the 2016 array. Preliminary results obtained with data recorded in 2015 are also discussed

High-frequency electromagnetic radiation of germanium crystals in magnetic fields

The cyclotron radiation of plasma of thermal carriers of germanium crystals, which is not in the state of thermodynamic equilibrium with semiconductor, has been experimentally confirmed