8 research outputs found
Precision method for the determination of neutrino mixing angle
Based on the properties of the cascade statistics of reactor antineutrinos the effective method of neutrino oscillations searching is offered. The determination of physical parameters of this statistics, i.e., the average number of fissions and the average number of antineutrinos per fission, does not require a priori knowledge of geometry and characteristics of the detector, the reactor power and composition of nuclear fuel
KNO and Polyakov's multiplicity scaling in inelastic pp- and pp -collisions at superhigh energies
It is shown that the normalized Saleh-Teich's multiplicity charged particles distribution in inelastic pp- and pp-collisions describes the KNO scaling low in soft processes (the range of ISR energies) and can be exhibited as Polyakov's scaling low in hard processes ( (√s >> 1800 GeV) but in any case the multiplicity scaling is always violated in the range of Sp − pS energies. It is supposed that the increase of transverse momentuma (or, what is the same, increase of phase volume) is the reason of the violation of any type scaling in the range of Sp − pS energies, when the part of semi-hard processes is essentially increased
Solar axions as an energy source and modulator of the Earth magnetic field
We show existence of strong negative correlation between the temporal
variations of magnetic field toroidal component of the solar tachocline (the
bottom of convective zone) and the Earth magnetic field (Y-component). The
possibility that hypothetical solar axions, which can transform into photons in
external electric or magnetic fields (the inverse Primakoff effect), can be the
instrument by which the magnetic field of convective zone of the Sun modulates
the magnetic field of the Earth is considered. We propose the axion mechanism
of "solar dynamo-geodynamo" connection, where an energy of axions, which form
in the Sun core, is modulated at first by the magnetic field of the solar
tachocline zone (due to the inverse coherent Primakoff effect) and after that
is absorbed in the liquid core of the Earth under influence of the terrestrial
magnetic field, thereby playing the role of an energy source and a modulator of
the Earth magnetic field. Within the framework of this mechanism new
estimations of the strength of an axion coupling to a photon (ga_gamma about
5*10^-9 GeV^-1) and the axion mass (ma ~ 30 eV) have been obtained.Comment: 13 pages, 3 figure
Galactic cosmic rays-clouds effect and bifurcation model of Earth global climate
The possible physical linkage between the cosmic rays cloud and indirect aerosol effects is discussed using the analysis of the first indirect aerosol effect (Twomey effect) and its experimental representation as the dependence of mean cloud droplet effective radius versus aerosol index defining the column aerosol number. It is shown that the main kinetic equation of Earth climate energy-balance model is described by the bifurcation equation (relative to the surface temperature of the Earth) in the form of fold catastrophe with two controlling parameters defining the variations of insolation and Earth magnetic field (or cosmic rays intensity in the atmosphere) respectively. The results of comparative analysis on the time-dependent solution of Earth climate energy-balance model taking into account nontrivial role of galactic cosmic rays and the known experimental data on the paleotemperature from the Vostoc ice core are presented. In the framework of the bifurcation model (i) the possibility of abrupt glacial climate changes analogous to the Dansgaard-Oeschger events due to stochastic resonance is theoretically argued, (ii) the concept of the climatic sensitivity of water (vapour and liquid) in the atmosphere is introduced. This concept reveals the property of temperature instability in the form of so-called hysteresis loop. On the basis of this concept it is shown that the simulated time series of global ice volume over the past 730 kyr are in good agreement with time series of seawater δ¹⁸O (ice volume proxy). (iii) Also, the so-called "doubling CO₂" problem is discussed
Solar axions as an energy source and modulator of the Earth magnetic field
We show existence of strong negative correlation between the temporal variations of magnetic field toroidal component of the solar tachocline (the bottom of convective zone) and the Earth magnetic field (Y-component). The possibility that hypothetical solar axions, which can transform into photons in external electric or magnetic fields (the inverse Primakoff effect), can be the instrument by which the magnetic field of convective zone of the Sun modulates the magnetic field of the Earth is considered. We propose the axion mechanism of Sun luminosity and “solar dynamo geo-dynamo” connection, where an energy of solar axions emitted in M1 transition in ⁵⁷Fe nuclei is modulated at first by the magnetic field of the solar tachocline zone (due to the inverse coherent Primakoff effect) and after that is resonance absorbed in the core of the Earth, thereby playing the role of an energy source and a modulator of the Earth magnetic field
KamLAND-experiment and soliton-like nuclear georeactor
We give an alternative description of the new data produced in the KamLAND experiment, assuming the existence of a natural nuclear reactor on the boundary of the liquid and solid phases of the Earth's core. Analyzing the uncertainty of antineutrino spectrum of georeactor origin, we show that the theoretical (which takes into account the soliton-like nuclear georeactor with power about 20 TW) reactor antineutrino spectrum describes with good accuracy the new experimental KamLAND-data. At the same time the parameters of mixing (Δm²₂₁=2.5х10⁻⁵ eV², tan²Θ₁₂=0.437) calculated within the framework of georeactor hypothesis are substantially closer to the data of solar flux SNO-experiment then the parameters of mixing obtained in KamLAND-experiment
Geoantineutrino Spectrum, ³He/⁴He-ratio Distribution in the Earth's Interior and Slow Nuclear Burning of the Liquid and Solid Phases of the Earth's Core
The description problem of geoantineutrino spectrum and reactor antineutrino experimental spectrum in KamLAND, which takes place for antineutrino energy ~ 2.8 MeV, and also the experimental results of the interaction of uranium dioxide and carbide with iron-nickel and silica-alumina melts at high pressure (5-10 GPа) and temperature (1600-2200°C) have motivated us to consider the possible consequences of the assumption made by V.Anisichkin and coauthors that there is an actinid shell on boundary of liquid and solid phases of the Earth's core. We have shown that the activation of a natural nuclear reactor operating as the solitary waves of nuclear burning in ²³⁸U- and/or ²³²Th-medium (in particular, the neutron-fission progressive wave of Feoktistov and/or Teller-Ishikawa-Wood) can be such a physical consequence. The simplified model of the kinetics of accumulation and burnup in U-Pu fuel cycle of Feoktistov is developed. The results of the numerical simulation of neutron-fission wave in two-phase UO₂/Fe medium on a surface of the Earth's solid core are presented. The georeactor model of 3He origin and the ³He/⁴He-ratio distribution in the Earth’s interior is offered. It is shown that the ³He/⁴He ratio distribution can be the natural quantitative criterion of georeactor thermal power. On the basis of O'Nions-Evensen-Hamilton geochemical model of mantle differentiation and the crust growth supplied by actinid shell on the boundary of liquid and solid phases of the Earth's core as a nuclear energy source (georeactor with power of 30 TW), the tentative estimation of geoantineutrino intensity and geoantineutrino spectrum on the Earth surface are given