A time lens for high resolution neutron time of flight spectrometers

We examine in analytic and numeric ways the imaging effects of temporal neutron lenses created by traveling magnetic fields. For fields of parabolic shape we derive the imaging equations, investigate the time-magnification, the evolution of the phase space element, the gain factor and the effect of finite beam size. The main aberration effects are calculated numerically. The system is technologically feasible and should convert neutron time of flight instruments from pinhole- to imaging configuration in time, thus enhancing intensity and/or time resolution. New fields of application for high resolution spectrometry may be opened.Comment: 8 pages, 11 figure

Physical culture and health of the person

Physical health is the natural state of an organism caused by normal functioning of all its bodies and systems. Each person has to care of the health, properly eat, lead a healthy lifestyle is a guarantee of longevity. The most important in human life is its health, it adapts the person for work, promotes self-developmentФизическое здоровье – это естественное состояние организма, обусловленное нормальным функционированием всех его органов и систем. Каждый человек должен заботиться о своём здоровье, правильно питаться, вести здоровый образ жизни - это залог долголетия. Самое главное в жизни человека – это его здоровье, оно приспосабливает человека к труду, способствует саморазвити

Static correlations in the ordered colloidal systems

The macroion-macroion correlation function and structure factor are studied within the Ornstein-Zernike (OZ) integral equation closed by hypernetted-chain approximation using the method of critical modes. Developing the results which have recently been received i

Static correlations in the ordered colloidal systems

The macroion-macroion correlation function and structure factor are studied within the Ornstein-Zernike (OZ) integral equation closed by hypernetted-chain approximation using the method of critical modes. Developing the results which have recently been received i

On Vertex Operator Construction of Quantum Affine Algebras

We describe the construction of the quantum deformed affine Lie algebras using the vertex operators in the free field theory. We prove the Serre relations for the quantum deformed Borel subalgebras of affine algebras, namely the case of $\hat{\it sl}_{2}$ is considered in detail. We provide some formulas for generators of affine algebra.Comment: LaTeX, 9 pages; typos corrected, references adde

Analysis of the drawing mill drive operation

For enterprises of the metallurgical industry, the task of increasing the operational life of drawing mills is urgent. The reasons for a significant decrease in the resource and an increase in the number of equipment downtime are related to the operational problems. Downtime due to emergency equipment failures account for up to 45 % of the mill's operating time per month. The paper considers the drive scheme of the drawing mill and analyzes the loss of time to restore its working condition. It is shown that the replacement of a cylindrical gearbox with a gearshift mechanism and a bevel gear with a planetary gear motor equipped with a frequency converter will increase the productivity of the drawing mill by reducing emergency equipment downtime. © 2022 National University of Science and Technology MISIS. All rights reserved