Anatoliy Zahorodniy

Zahorodniy was born on January 29, 1951, in Velyka Bahachka, Ukraine.

In 1972, he graduated from the Faculty of Radiophysics, Kharkiv State University (now - V.N. Karazin Kharkiv National University).{{Cite web|url=https://www.univer.kharkov.ua/en|title = V. N. Karazin Kharkiv National University (Official Site)}} In 1978, he defended his Candidate of Sciences dissertation "Fluctuations and emission spectra of bounded plasma" and received the degree of Candidate of Physical and Mathematical Sciences in "Theoretical Physics".In 1990 he defended his dissertation (Dr. of Sci. degree) on "Electromagnetic fluctuations in limited plasma-molecular systems" and received a doctorate in Physics and Mathematics in "Plasma Physics".

From 1972 on, he has been at the Nikolay Bogolyubov Institute of Theoretical Physics of the NAS of Ukraine.{{Cite web|url=http://bitp.kiev.ua/en/about|title=Bogolyubov Institute for Theoretical Physics|website=bitp.kiev.ua}} From 1980 to 1988, he was scientific secretary. From 1989 to 2002, he was deputy director for research. From 1996 to 2016, he was head of the Department of Theory and Modeling of Plasma Processes. From 2003, he has been the director.

In 1997, he was elected a Corresponding member of the National Academy of Sciences of Ukraine, in the section "Theoretical Physics, Plasma Physics"; in 1998 he was awarded the Academic title of Professor. In 2006 he was elected an Academician of the National Academy of Sciences of Ukraine. From 2009 to 2011, he was its Chief Scientific Secretary; from 2011 to 2020, Vice President, and from 2020 on, he has been President of the National Academy of Sciences of Ukraine.{{Cite web|url=https://www.nas.gov.ua/EN/PersonalSite/Pages/default.aspx?PersonID=0000004461|title=Zagorodny Anatoly G.|website=www.nas.gov.ua}}{{Cite web |date=2021-04-19 |title=Зеленський увів президента Академії наук до складу РНБО |url=https://web.archive.org/web/20210419113606/https://www.ukrinform.ua/rubric-polytics/3174501-zelenskij-uviv-prezidenta-akademii-nauk-do-skladu-rnbo.html |access-date=2025-03-19 |website=web.archive.org}}

His scientific works are devoted to the problems of theoretical and mathematical physics, plasma theory, statistical physics, physics of kinetic phenomena.{{Cite web|url=https://www.scopus.com/authid/detail.uri?authorId=6603699621|title=Scopus preview - Zagorodny, Anatoly G. - Author details - Scopus|website=www.scopus.com}}

Together with Ivan Yakymenko and Yuriy Klymontovych, he developed a statistical theory of spatially bounded plasma-molecular systems, on the basis of which he investigated the influence of the interaction of plasma and molecular subsystems on electromagnetic fluctuations in such systems.{{cite journal |last1=Klimontovich Y. L., Wilhelmsson H., Yakimenko I. P., Zagorodny A. G. |title=Statistical theory of plasma-molecular systems |journal=Phys. Reports |date=1989 |volume=175 |issue=5–6 |pages=263–401|doi=10.1016/0370-1573(89)90054-9 |bibcode=1989PhR...175..263K }} He obtained new kinetic equations for the distribution functions of free and bound charged particles in bounded plasma-molecular media, established the explicit form of collision integrals, and investigated the influence of boundary surfaces on the distributions of electrons, ions, and molecules near the medium boundary. He developed the theory of bremsstrahlung in plasma-molecular systems, which takes into account all possible scattering processes involving charged particles and molecules, as well as the scattering of electrons and molecules by collective fluctuations.{{cite journal |last1=P. P. J. M. Schram, Sitenko A. G., Trigger S. A., Zagorodny A. G. |title=Statistical theory of dusty plasmas: Microscopic equations and Bogolyubov-Born-Green-Kirkwood-Yvon hierarchy |journal=Phys. Rev. E |date=2001 |volume=63 |issue=1 II |page=016403|doi=10.1103/PhysRevE.63.016403 |pmid=11304361 }}

In the 1980s and 1990s, together with Oleksiy Sytenko, he generalized the theory of fluctuations in a stable stationary plasma to the case of turbulent plasma with diffusion-drift motions of the liquid type. Calculated the dynamic form factors of such a plasma, investigated their features associated with large-scale turbulent motions in such a plasma. Within the developed approach, he proposed a model of non-Markov diffusion of particles in turbulent plasma.

Further research was aimed at the kinetic description of dusty plasma and the development of the theory of electromagnetic fluctuations in such plasma, taking into account the self-consistent formation of the dynamic charge of powders.{{cite journal |last1=Zagorodny A. G., Schram P. P. J. M., Trigger S. A. |title=Stationary velocity and charge distributions of grains in dusty plasmas |journal=Phys. Rev. Lett. |date=2000 |volume=84 |issue=16 |pages=3594–3597 |doi=10.1103/PhysRevLett.84.3594 |pmid=11019154 |arxiv=physics/9911008 |bibcode=2000PhRvL..84.3594Z |s2cid=35482055 }}{{cite journal |last1=Zagorodny A. G., Schram P. P. J. M., Trigger S. A. |title=ZagorodnStationary velocity and charge distributions of grains in dusty plasmas |journal=Phys. Rev. Lett. |date=2000 |volume=84 |issue=16 |pages=3594–3597 |doi=10.1103/PhysRevLett.84.3594 |pmid=11019154 |arxiv=physics/9911008 |bibcode=2000PhRvL..84.3594Z |s2cid=35482055 |url=https://research.tue.nl/nl/publications/stationary-velocity-and-charge-distributions-of-grains-in-dusty-plasmas(314b2b77-ca88-46de-82e8-de10b94953e0).html }}

He developed the kinetic theory of dusty plasma. On the basis of the first principles of statistical mechanics, he derived microscopic equations and a chain of Bogolyubov equations for dusty plasma, which made it possible to explain a wide class of new physical phenomena. In particular, he proposed a kinetic approach to the calculation of the effective interaction potentials of powders in plasma and applied it to the study of shielded potentials in weakly ionized plasma, including in the presence of external fields. He found that charging the powders with plasma currents [absent in the source] leads to their decryption, i.e. to the appearance of the Coulomb asymptotics of the effective potential. It has also been shown that the specific polarization of the plasma near the moving powder can lead to a significant reduction in the coefficient of friction and even a change in its sign (negative friction).{{cite journal |last1=Bystrenko O., Zagorodny A. |title=Screening of dust grains in a weakly ionized gas: Effects of charging by plasma currents. |journal=Phys. Rev. E |date=2003 |volume=67 |issue=6 2 |page=066403/1–066403/5|doi=10.1103/PhysRevE.67.066403 |pmid=16241355 |bibcode=2003PhRvE..67f6403B }}{{cite journal |last1=Ilyin V., Procaccia I., Zagorodny A. |title=Stochastic processes crossing from ballistic to fractional diffusion with memory: Exact results. |journal=Phys. Rev. E |date=2010 |volume=81 |issue=3 |page=030105|doi=10.1103/PhysRevE.81.030105 |pmid=20365685 |arxiv=0911.3770 |bibcode=2010PhRvE..81c0105I |s2cid=5918243 }}

He developed the theory of electromagnetic fluctuations in powdered weakly ionized plasma, taking into account the dynamic charging of powders with plasma currents. Proposed general relations for the dielectric response function of dusty plasma and fluctuation currents.{{cite journal |last1=Semenov I. L., Zagorodny A. G., Krivtsun I. V. |title=SIon drag force on a dust grain in a weakly ionized collisional plasma |journal=Physics of Plasmas |date=2013 |volume=20 |issue=1 |page=013701|doi=10.1063/1.4773438 |bibcode=2013PhPl...20a3701S }}{{cite journal |last1=Momot A. I., Zagorodny A. G., Momot O. V. |title=Electron density fluctuations in collisional dusty plasma with variable grain charge |journal=Phys. Rev. E |date=2019 |volume=99 |issue=1 |page=013206|doi=10.1103/PhysRevE.99.013206 |pmid=30780254 |bibcode=2019PhRvE..99a3206M |s2cid=73488875 }}

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Category:1951 births

Category:Living people

Category:People from Poltava Oblast

Category:21st-century Ukrainian physicists

Category:National University of Kharkiv alumni

Category:Presidents of the National Academy of Sciences of Ukraine

Category:Laureates of the State Prize of Ukraine in Science and Technology

Category:Laureates of the Honorary Diploma of the Verkhovna Rada of Ukraine