Spinodal decomposition, nuclear fog and two characteristic volumes in thermal multifragmentation

Thermal multifragmentation of hot nuclei is interpreted as the nuclear liquid-fog phase transition inside the spinodal region. The experimental data for p(8.1GeV) + Au collisions are analyzed within the framework of the statistical multifragmentation model (SMM) for the events with emission of at least two IMFs. It is found that the partition of hot nuclei is specified after expansion to a volume equal to Vt = (2.6+-0.3) Vo, with Vo as the volume at normal density. However, the freeze-out volume is found to be twice as large: Vf = (5+-1) Vo.Comment: 8 pages, 6 figures, to be published in Nucl.Phys.

Nuclear multifragmentation and fission: similarity and differences

Thermal multifragmentation of hot nuclei is interpreted as the nuclear liquid--fog phase transition deep inside the spinodal region. The experimental data for p(8.1GeV) + Au collisions are analyzed. It is concluded that the decay process of hot nuclei is characterized by two size parameters: transition state and freeze-out volumes. The similarity between dynamics of fragmentation and ordinary fission is discussed. The IMF emission time is related to the mean rupture time at the multi-scission point, which corresponds to the kinetic freeze-out configuration.Comment: 7 pages, 3 Postscript figures, Proceedings of IWM 2005, Catani

Test of a theoretical equation of state for elemental solids and liquids

We propose a means for constructing highly accurate equations of state (EOS) for elemental solids and liquids essentially from first principles, based upon a particular decomposition of the underlying condensed matter Hamiltonian for the nuclei and electrons. We also point out that at low pressures the neglect of anharmonic and electron-phonon terms, both contained in this formalism, results in errors of less than 5% in the thermal parts of the thermodynamic functions. Then we explicitly display the forms of the remaining terms in the EOS, commenting on the use of experiment and electronic structure theory to evaluate them. We also construct an EOS for Aluminum and compare the resulting Hugoniot with data up to 5 Mbar, both to illustrate our method and to see whether the approximation of neglecting anharmonicity et al. remains viable to such high pressures. We find a level of agreement with experiment that is consistent with the low-pressure results.Comment: Minor revisions for consistency with published versio

Effect of physical and structural parameters of liquid-crystal devices of the guest-host type of information representation on their optical characteristics

A computer modeling method is used to optimize the structural parameters of a liquid-crystal guest-host type of indicator, making it possible to improve the optical characteristics by a factor of 1.5-2 by increasing the thickness of the liquid-crystal layer and simultaneously reducing the dye concentration. © 1999 The Optical Society of America

ANALYSIS OF THE EXISTING AGENT PLATFORMS FOR BUILDING MANAGEMENT SYSTEMS MOBILE RADIO NODES CLASS MANET

Проведено аналіз існуючих агентних платформ та можливість їх застосування для створення системи управління вузлами мобільних радіомереж класу MANET.Проведен анализ существующих агентных платформ и возможность их применения для создания системы управления узлами мобильных радиосетей класса MANET.Existing agent platforms and their applicability to the MANET-nodes control system are analyzed

OBJECTIVE FUNCTION COORDINATION IN TACTICAL MANET INTELLECTUAL CONTROL SYSTEMS

Розглянуто проблеми координації цільових функцій в інтелектуальних системах управління радіомережами класу MANET. Проаналізовано методи координації та особливості їх застосування. Сформульовано задачу координації, проаналізовано та математично формалізовано алгоритми координації у інтелектуальних системах управління радіомережами MANET.Рассмотрены проблемы координации целевых функций в интеллектуальных системах управления радиосетями класса MANET. Проанализированы методы координации и особенности их применения. Сформулирована задача координации, проанализированы и математически формализованы алгоритмы координации в интеллектуальных системах управления радиосетями MANET.The problems of interaction coordination in tactical MANET intellectual control systems are considered. The methods of coordination and features of their application are analyzed. The coordination problem is formulated; coordination algorithms in MANET intellectual control systems are analyzed and mathematically formalized