[en] A new approach towards comparing two spectra based on preliminary identification of line positions is considered. It is implemented in a program, IDENT, written in FORTRAN, which checks setting of dispersions and prints out information on the nature of spectra coincidence

[en] Consideration is being given to calculation aspects of founding probabilities of rare event registra ion when studying multiple processes. Recurrent expression for determining probabilities in registration model with constant intensities of primary events as well as in their fluctuations according to the truncated-normal law are constructed. The question about calculation stability to initial values was investigated. Computer calculations were conducted for characteristic values of distribution parameter

No abstract available

[en] Detail comparison of results of experiments on studying photonuclear reaction cross sections using bremsstrahlung (BS) and quasimonochromatic radiation arising during annihilation of accelerated positrons in flight testify to the presence of systematic differences; main of them are the following: markedly lesser distinct manifestation of structural peculiarities in QMR cross sections as compared with BS cross sections and little lesser (by 10-20%) values of QMR cross sections. The Tichonov method was used to restore (γn) reaction cross section by ¹²C proceeding from dependence of reaction yield on energy. The following conclusions have been drawn. Difference of a real shape of QMR spectrum from delta function is one of main reasons of QMR- and BS-cross sections. Halfwidth of monoline (200-400 keV) reached during modern QMR experiments doesn't permit to separate all cross section peculiarities. Difference of real QMR spectrum shape from delta function permits actually to obtain during QMR experiment data only on yield (but not on cross section) of reaction which raises a question of solution of corresponding integral equations with kernel of rather complex shape. The investigations performed testify that a more correct processing of QMR experiments data can promote considerable convergence of these data with BS experiment data

[en] New findings in study of geodesic acoustic modes (GAMs) on the T-10 tokamak since the last IAEA FEC 2014 are described. The broadband fluctuations of potential φ and electron density n _e in Ohmic and ECRH regimes are analyzed with Heavy Ion Beam Probing along with fluctuations of poloidal magnetic field B _pol. At the edge, at ρ  >  0.8, the dominated GAM peak with frequency 17 kHz in potential fluctuations, and noticeable peak of quasi-coherent density and potential fluctuations with frequency 40–100 kHz and HFHM ∼30 kHz are observed. During ECRH of high density ${\stackrel{¯<!--\; ??\; -->}{n}}_{\text{e}}$ ∼ 4  ×  10¹⁹ m⁻³ plasmas, the level of broadband fluctuations decreases, but the energy confinement degrades and the GAM amplitude on φ rises. The bi-spectral analysis of φ and n _e fluctuations demonstrates the existence of statistically significant auto- and cross-bicoherence at the GAM frequency that points out to three-wave interaction between GAM and broadband electrostatic turbulence, while the cross-bicoherence for φ, n _e and B _pol indicates three-wave interaction between GAM and broadband electromagnetic turbulence. These three-wave interactions may be explained by quadratic character of nonlinear GAM generation, e.g. owing to Reynolds stress. (special topic)

No abstract available

No abstract available

No abstract available

[en] Efforts to design the InterSONG device to be used in the experiments to be carried out with involvement of the InterHelios automatic interplanetary station operating at up to 25 solar radii distances are in progress now to improve essentially sensitivity in the experiments to investigate into solar neutrons via measurements in the Sun vicinity. The mentioned device is designed on the basis of LiI scintillation crystal enriched with ⁶Li and a plastic scintillator with boron additive used as a fast neutron moderator. The device is designed to record 0.1-100 MeV energy neutrons and electromagnetic radiation within 0.03-10 MeV range

[en] Specific oscillations within a range of 20 kHz ('20 kHz-mode') were investigated on the T-10 and TEXT tokamaks using Heavy Ion Beam Probe (HIBP) diagnostic. Regimes with ohmic heating on both machines, and with off-axis ECRH in T-10 were studied. It was shown that '20 kHz-modes' are mainly the potential oscillations. The power spectrum of the oscillations has the form of a solitary quasi-monochromatic peak with a contrast range of (3-5). They are the manifestation of torsional plasma oscillations with poloidal wavenumber m=0, called zonal flows. It was shown that in TEXT the radial electric field oscillations exist in a limited radial range of 0.65<ρ<0.95. The frequency of '20 kHz-mode' varies with local T_e: f∼T_e^1/2, which is consistent with theoretical scaling for geodesic acoustic modes (GAM): f_GAM∼c_s/R∼T_e^1/2, where c_s is the speed of sound. The absolute frequencies are close to GAM values within a factor of unity. (author)