Konstantin Lyakhov

Konstantin Lyakhov
Russian Academy of Sciences | RAS · Steklov Mathematical Institute

PhD

About

29
Publications
3,103
Reads
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126
Citations
Additional affiliations
February 2019 - present
Russian Academy of Sciences
Position
  • Senior Researcher
Description
  • Quantum technologies
November 2010 - present
Jeju National University
Position
  • Professor
Description
  • nuclear engineering,laser physics, plasma applications
June 2004 - May 2008
Goethe-Universität Frankfurt am Main
Position
  • PhD Student

Publications

Publications (29)
Article
Full-text available
In this paper, application of the method of laser-assisted retardation of condensation has been considered for molybdenum isotope separation. Enrichment factor as a function of pressure and temperature of gas flow cold core have been evaluated. Since the maximal value of enrichment factor is not high(~ 1.8), to achieve desired enrichment level in p...
Conference Paper
In this paper, photo-absorption cross section for selective multi-line excitation of target isotopologues within the SILARC method as a function of laser pulse spectrum in irradiation cell implemented as laser resonator has been derived. More accurate expression for excitation rate, which takes into account effective fraction of molecules interacti...
Article
Вводится новый критерий оптимизации для итеративного извлечения изотопов циркония при помощи лазерного метода селективного замедления конденсации. Оптимизация проводится относительно следующего набора параметров: давление и температура газового потока, мольная доля целевого газа в газе-носителе, интенсивность лазерного импульса, радиус лазерного лу...
Article
Full-text available
A design of an industrial concentration plant based on the method of selective retardation of condensation in an external laser field was earlier proposed. In this paper, we review recent results on optimization criteria (objective functions) proposed for the search for optimal parameters of this scheme, related to the geometry and operational char...
Article
A cheap and efficient production of boron isotopes is important for providing further progress in nuclear engineering, semiconductor industry, and nuclear medicine. Motivated by this problem, we consider the \({\text {CO}}_{2}\) laser system designed to separate boron isotopes by the method of laser-assisted retardation of condensation. Values of t...
Article
Full-text available
The influence of multi-line pulsed excitation of target isotopes within the method of selective laser assisted retarded condensation (SILARC) on the efficiency of boron isotopes separation is investigated. In pulsed mode simultaneous excitation of all four isotopologues 11B35Cln37Cl3−n is possible. In order to study it, a new formula for multi-line...
Chapter
Advancing miniaturization of microelectronic devices makes the heat removal problem extremely important. It makes to search for cheaper ways for silicon isotopes production. We discuss a number of important constraints to be considered for optimal design of industrial scale silicon isotopes separation facility relying on the laser assisted retarded...
Article
Full-text available
Plasma discharge is a novel disinfection and effectual inactivation approach to treat microorganisms in aqueous systems. Inactivation of Gram-negative Escherichia coli (E. coli) by generating high-frequency , high-voltage, oxygen (O 2) injected and hydrogen peroxide (H 2 O 2) added discharge in water was achieved. The effect of H 2 O 2 dose and oxy...
Article
More cheap production of boron isotopes is needed to provide further progress in nuclear engineering, microelectronics, and nuclear medicine. In this paper feasibility of boron isotopes separation scheme by laser assisted retarded condensation (SILARC) on industrial scale is investigated. Proposed industrial scale facility has a modular structure....
Article
Full-text available
Polyoxymethylene copolymer (POM-C) is the most prominent engineering thermoplastic consisting of repeating carbon-oxygen bonds in the form of oxymethylene groups (OCH2). It is widely used to make small gear wheels, ball bearings, precision parts, automotive and consumer electronics. In this study, the POM-C round blocks were irradiated with 165 KeV...
Article
Full-text available
Polyoxymethylene copolymer (POM-C) round block was implanted with 120 KeV ions of He to doses of 5 x 1016 and 1 x 1016 ions cm-2. It was also implanted with 120 KeV ions of Ar + He and He + Ne to dose of 1 x 1016 ions cm-2, respectively. The friction coefficient behavior of both implanted and unimplanted POM-C blocks was investigated using a ball o...
Conference Paper
Full-text available
Polyoxymethylene copolymer (POM-C) is the most prominent engineering thermoplastic consisting of repeating carbon-oxygen bonds in the form of oxymethylene groups (OCH2). It is widely used to make small gear wheels, ball bearings, precision parts, automotive and consumer electronics. In this study, the POM-C round blocks were irradiated with 165 KeV...
Conference Paper
Full-text available
Polyoxymethylene copolymer (POM-C) round block was implanted with 120 KeV ions of He to doses of 5 x 10 16 and 1 x 10 16 ions cm-2. It was also implanted with 120 KeV ions of Ar + He and He + Ne to dose of 1 x 10 16 ions cm-2 , respectively. The friction behavior of both implanted and unimplanted POM-C blocks was investigated using a pin on disk tr...
Article
Demand in isotopically pure boron is steadily growing in industry and medicine. It makes necessary to search for cheaper ways of isotopes production. We propose a new experimental setup design for boron isotope separation by laser assisted retardation of condensation (SILARC) method based on an energy efficiency use relevant optimization method. Th...
Article
In this paper, we propose optimal design of experimental setup for isotope separation by laser assisted retardation of condensation method. Optimal parameters for this setup can be found from the optimization criterion based on the transport model for rarefied gas flow dynamics in external laser field specifically tuned for selective excitation of...
Conference Paper
Full-text available
Modern researches indicate many possible ways of isotopically enriched materials applications in different spheres of human activity. In particular, zirconium isotope enriched materials can be used in nuclear industry in order to save fuel. Therefore, the problem of finding cheaper ways of zirconium isotope separation arises. In this paper we focus...
Article
In this paper we develop a new static model for boron isotope separation by the laser assisted retardation of condensation method (SILARC) on the basis of model proposed by Jeff Eerkens. Our model is thought to be adequate to so-called two-step iterative scheme for isotope separation. This rather simple model helps to understand combined action on...
Article
A new static model for boron isotope separation by the laser assisted retardation of condensation method (SILARC) on the basis of model developed by Jeff Eerkens is proposed. This model was developed for so called two step iterative scheme for isotopes enrichment. From this model optimal conditions, that include carrier gas choice, rarefication deg...
Article
Full-text available
Strong chromofields generated at early stages of ultrarelativistic nuclear collisions may explain not only creation of the quark-gluon plasma but also collective deceleration of net baryons. This is demonstrated by solving classical equations of motion for baryonic slabs under the action of a time-dependent chromofield. We have studied sensitivity...
Article
Strong chromofields developed at early stages of relativistic heavy-ion collisions give rise to the collective deceleration of net baryons from colliding nuclei. We have solved classical equations of motion for baryonic slabs under the action of a time-dependent chromofield. We have studied the sensitivity of the slab trajectories and their final r...
Article
This article generalizes Schwinger’s mechanism for particle production in the time dependent field volume in the quasi-static approximation. Solution of DGLAP equations in the double leading log approximation for a small x gluon distribution function was used to derive the new formula for initial chromofield energy density. This initial chromofield...
Article
Full-text available
This article generalizes Schwinger's mechanism for particles production in the arbitrary finite field volume. McLerran-Venugopolan(MV) model and iterative solution of DGLAP equation in the double leading log approximation for small x gluon distribution function were used to derive the new formula for initial chromofield energy density. This initial...
Article
Full-text available
It is assumed that strong chromofields are generated at early stages of ultrarelativistic heavy-ion collisions which give rise to a collective deceleration of net baryons from colliding nuclei. We have solved classical equations of motion for baryonic slabs under the action of a time-dependent longitudinal chromoelectric field. It is demonstrated t...
Article
Full-text available
Strong chromofields developed at early stages of ultrarelativistic heavy-ion collisions may give rise to the collective deceleration of net baryons from colliding nuclei. We have solved classical equations of motion for baryonic slabs under the action of a time-dependent chromofield. It is demonstrated that the slab trajectories and their final ra-...
Article
Full-text available
This work is dedicated to obtaining of analog of Bogoliubov's chain for the case of complex scalar field in QFT and renormalization problem of obtained equations is discussed.

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