78 research outputs found
Elliptical motions of stars in close binary systems
Motions of stars in close binary systems with a conservative mass exchange
are examined. It is shown that Paczynski-Huang model widely used now for
obtaining the semi-major axis variation of a relative stars orbit is incorrect,
because it brings about large mistakes. A new model suitable for elliptical
orbits of stars is proposed. Both of reactive and attractive forces between
stars and a substance of the flowing jet are taken into account. A possibility
of a mass exchange at presence of accretion disk is considere
Analysis of hadron production in nucleus-nucleus interactions up to and out of kinematical limit of free NN-collisions in the frame of FRITIOF model
In the framework of the modified FRITIOF model, the inclusive spectra of the
cumulative -, -mesons and protons produced in the
nucleus-nucleus interactions at 4.5 GeV/c/nucleon and 4.2 GeV/c/nucleon are
calculated. It is shown that the model reproduces qualitatively, and in some
cases quantitatively the main experimental regularities of -mesons
production, and "soft" part of the proton spectra. According to the model the
production of the cumulative particles is connected with the mechanism of the
"soft" nucleon-nucleon interaction.Comment: 12 pages, 11 figure
FEATURES OF SUBMICRO- AND NANO- CRYSTALLINE STRUCTURE IN AL-LI-ALLOYS UPON MEGA PLASTIC DEFORMATION
С помощью методов просвечивающей электронной микроскопии изучено влияние химического состава сплавов системы Al-Cu-Li на образование в них нанокристаллической структуры после мегапластической деформации кручением под высоким давлением и последующего отжига. Выявлено, что размерная стабильность зеренной структуры наноструктурированных сплавов обусловлена барьерным эффектом выделяющейся гетерогенно стабильной мелкодисперсной фазы T2.The effect of chemical composition on formation of nanocrystalline structure in Al-Cu-Li alloys subjected to severe plastic deformation by high-pressure torsion and subsequent annealing is investigated by methods of transmission electron microscopy. It has been shown that size stability of nanocrystalline structure is caused by the barrier effect of the finely heterogeneously dispersed stable T2-phases
Dynamical evolution of stellar orbits in close binary systems with conservative mass transfer
The possible existence of cloud-like clusters of microparticles at the libration points of a binary star
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