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N.L. Tsintsadze P.K. Shukla L. Stenflo 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2003,23(1):109-115
The electroweak coupling between intense neutrino beams and strongly degenerate relativistic dense electron-positron magnetoplasmas
is considered. The intense neutrino bursts interact with the plasma due to the weak Fermi interaction force, and their dynamics
is governed by a kinetic equation. Our objective here is to develop a kinetic equation for a degenerate neutrino gas and to
use that equation to derive relativistic magnetohydrodynamic equations. The latter are useful for studying numerous collective
processes when intense neutrino beams nonlinearly interact with degenerate, relativistic, dense electron-positron plasmas
in strong magnetic fields. If the number densities of the plasma particles are of the order of 1033 cm-3, the pair plasma becomes ultra-relativistic, which strongly affects the potential energy of the weak Fermi interaction. The
new system of equations allows several neutrino-driven streaming instabilities involving new types of relativistic Alfvén-like
waves. The relevance of our investigation to the early universe and supernova explosions is discussed.
Received 11 September 2002 Published online 4 February 2003
RID="a"
ID="a"Permanent address: Department of Physics, Tbilisi State University, Chavchavadze 3, Tbilisi 38028, Georgia.
RID="b"
ID="b"Also at the Department of Plasma Physics, Ume? University, 90187 Ume?, Sweden; and the Center for Interdisciplinary Plasma Science,
Max-Planck Institut für Plasmaphysik und extraterrestrische Physik, Postfach 1312, 85741 Garching, Germany. e-mail: ps@tp4.ruhr-uni-bochum.de
RID="c"
ID="c"Permanent address: Department of Plasma Physics, Ume?University, 90187 Ume?, Sweden. 相似文献
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G. V. Tsintsadze G. M. Zhidomirov M. A. Meladze A. G. Pel'menshchikov E. A. Kvezereli N. U. Zhanpeisov A. P. Narimanidze 《Russian Chemical Bulletin》1988,37(4):810-812
1. | The quantum-chemically calculated proton affinity may be considered a convenient index, characterizing the relative coordinating capacity of the different electron-donor sites of the amides and hydrazides of pyridinecarboxylic acids. |
2. | The calculated change in the electronic structure of the bonds in these molecules upon proton coordination qualitatively corresponds to the nature of the change in their IR spectra upon complexation. |
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The results on the investigation of the susceptibility for the Heisenberg ferromagnet CuK2Cl4.2H2O in the magnetic field are reported. The susceptibility divergence at the critical temperature in the magnetic field is shown to transform into susceptibility anomalies of two types, their shifts being approximated by the power functions with indices ω = 2.6 and ? = 0.58. The experimental data support the assumption about the complex critical temperature. The regions for the existence of phases with uniform and non-uniform magnetizations are determined. 相似文献
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E. G. Boos D. I. Ermilova V. V. Samoilov T. Temiraliev B. V. Batyunya I. V. Boguslavsky N. B. Dashian I. M. Gramenitsky R. Lednický S. V. Levonian V. Vrba Z. Zlatanov E. Hannula P. Villanen J. Patočka R. K. Dementiev I. A. Korzhavina E. M. Leikin A. G. Pyzyrny V. I. Rud L. A. Tikhonova I. Herynek M. Lokajíček J. Řídký V. Šimák M. Suk A. Valkárová A. M. Khudzhadze G. O. Kuratashvili T. P. Topuriya V. D. Tsintsadze 《Zeitschrift fur Physik C Particles and Fields》1982,15(4):287-291
The 22.4 GeV/c \(\bar p\) p interactions with the leading particle and the slow proton subtracted are used as data on soft processes. Considerable similarity between them and hard processes, such ase + e ? annihilation into hadrons, is found by means of studying charged multiplicities, KNO scaling and longitudinal as well as transverse spectra. 相似文献
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NL Asfandiarov AI Fokin VG Lukin EP Nafikova GS Lomakin VS Fal'ko YV Chizhov 《Rapid communications in mass spectrometry : RCM》1999,13(12):1116-1123
A series of anthraquinone (C(14)O(2)H(8)) derivatives has been studied by means of electron capture negative ion mass spectrometry (ECNI-MS), photoelectron spectroscopy (PES), and AM1 quantum chemical calculations. Mean lifetimes of molecular negative ions M(-.) (MNI) have been measured. The mechanism of long-lived MNI formation in the epithermal energy region of incident electrons has been investigated. A simple model of a molecule (a spherical potential well with the repulsive centrifugal term) has been applied for the analysis of the energy dependence of cross sections at the first stage of the electron capture process. It has been shown that a temporary resonance of MNI at the energy approximately 0.5 eV corresponds to a shape resonance with lifetime 1-2.10(-13) s in the f-partial wave (l = 3) of the incident electron. The next resonant state of MNI at the energy approximately 1.7 eV has been associated with the electron excited Feshbach resonance (whose parent state is a triplet npi* transition). In all cases the initial electron state of the MNI relaxes into the ground state by means of a radiationless transition, and the final state of the MNI is a nuclear excited resonance with a lifetime measurable on the mass spectrometry timescale. Copyright 1999 John Wiley & Sons, Ltd. 相似文献