Molecular Structure, Physical and Chemical Processes in Gases and in Non-Equilibrium Plasma

Mikhail F. Butman

Mikhail F. Butman

Doctor of Physical and Mathematical Sciences, Professor of Department of Physics

Professor Butman is a specialist in the field of high-temperature materials science, kinetics and thermodynamics of chemical reactions, physical chemistry of surface phenomena and vapour state, chemistry of solid state and mass-spectrometry.

Fields of research:

  • Kinetics and thermodynamics of ionic and molecular sublimation of inorganic ionic crystals, intermetallic and organometallic compounds;
  • Defect formation processes and morphological and electrical properties of mono- and polycrystals caused by them. Solid state ionics.
  • Mechanisms of high-temperature reactions on crystal surface, including ionic clusters formation and saturated vapour oligomerization;
  • Thermodynamic properties of free ions and molecules.

The most significant works:

  1. M. F. Butman, H. Dabringhouse. Transient Behavour of the Thermal Ion Emission from KC1(001) upon Polarity Reversal of the Electric Extraction Field. Surface Science, 2003. Vol. 540. PP. 313-325.
  2. M. F. Butman, A.A.Smirnov, L.S.Kudin, H.Dabringhouse. Mass Spectrometric Study of the Thermal Ion Emission from Crystalline BaF2 at the Temperatures of Phase Transition to the Superionic State Surface Science 2001. Vol. 489. PP. 83-89
  3. M. F. Butman, A. A. Smirnov, L. S. Kudin, Z.A. Minyr. Vacancy Formation Energies and Mechanisms of Ion-Molecule Reactions from Ionic Sublimation Measurements on Potassium Bromide Single Crystal. Philosophical Magazine B. 2000. Vol. 80. No 9. PP. 1653-1666.
Georgy V. Girichev

Georgy V. Girichev

Doctor of Chemical Science, Professor, Head of Physics Department

Professor Girichev is a specialist in the field of molecule structure studies and high temperature chemical reactions research as well as in physical experiment techniques.

The research methods are: gas electron diffraction, mass-spectrometry, laser Raman spectroscopy, and quantum-chemical calculations.

Research group, which is lead by professor Girichev, carries out up to the half of high temperature studies accomplished by the gas electronography method in CIS and about one third ones in the world. Research group possesses unique equipment for the studies in the temperature range of 0-1300 0C including the one of the most powerful in the world equipment set for performing synchronous electronographic and mass-spectrometric experiment. This equipment set enables to investigate unsaturated and overheated vapours, to study thermostability of the compounds, to carry out directed synthesis of the desired substance in the course of the experiment. The latter provides direct study of the radical structure.

Most of the works are devoted to the research of the structure of molecules existing in gaseous phase under high temperatures.

The most significant works:

  1. G.V. Girichev, N.I. Giricheva, N.V. Belova, N.P. Kuzmina. Bis-complex Structure of Dipyvaloilmethanates of sp- and d-Elements in Gaseous Phase Zhurnal Koordinatzionnoy Khimii. 1999. Vol. 25. No 12. PP. 1-8. [in Russian]
  2. N.I. Giricheva, G.V. Girichev. Molecular Structure of Niobium tetra- and oxytrihalides J. Mol. Struct. 1999. Vol. 484. No 4. PP. 1-9.
  3. G.V. Girichev, N.I. Giricheva. Structural Manifestations of Internal Periodicity in the Series of Transition Metals Halides Zhurnal Neorganitcheskoi Khimii. 1999. Vol. 44. No 7. PP. 1101-1103. [in Russian]
Lev S. Kudin

Lev S. Kudin

Doctor of Chemical Science, Professor of Physics Department

Professor Kudin is one of the creators of new a version of mass-spectrometric method of ionic-molecular equilibriums. The new scientific school on thermoemission of clusters ions by poor volatile inorganic compounds has also been founded by him.

His field of research interests is high temperature chemistry and high temperature materials.

The main directions of activity are:

  • Studies of ionization and fragmentation mechanisms under the electron impacts
  • Investigation of ion-molecular reaction thermodynamics
  • Determination of thermodynamic activity of independent components of alloys and multi-component systems
  • Studies of thermo-ionic emission of solid electrolytes
  • Studies of kinetics of molecular and ion sublimation of single crystals.

Objects of investigation are inorganic substances: halides, oxides and hydroxides of alkaline and alkali-earth metals; chlorides of lanthanides, copper, silver, aluminum; salts of oxygen containing acids; solid electrolytes; aluminuim; aluminosilicates; alloys on the base of Mg, Ba, Si, Zr etc.

The most significant works:

  1. L. S. Kudin, A.M. Pogrebnoi, I. V. Khasanshin, V. B. Motalov. Thermodymanic Properties of Neutral and Charged Species in High Temperature Vapour over Terbium and Thulium Trichlorides High Temp. High Press. 2000. Vol. 32. No 5. PP. 557-565.
  2. K. V. Rakov, L. S. Kudin, A.M. Pogrebnoy. Mass-spectrometric Study of the Thermoemission of Neutral and Charged Particles from Copper Mono Iodide Zhurnal Neorganitcheskoy Khimii. 2001. Vol. 46. No 9. PP. 1567-1570 [in Russian]
  3. M. F. Butman, L. S. Kudin, A.A. Smirnov, Z.A. Munir. Mass Spectrometric Study of the Molecular and Ionic Sublimation of Cesium Iodide Single Crystals Int. Journal of Mass Spectrometry. 2000. Vol. 202. PP. 121-137.
"Alexander M. Pogrebnoy

Alexander M. Pogrebnoy

Doctor of Chemical Science, Professor of Physics Department

Professor Pogrebnoy is a specialist in the field of mass-spectrometric investigations of inorganic compounds.

Areas of his research interests are:

  • Studies of ion-molecular equilibriums in inorganic compounds vapours;
  • Thermodynamic determination of ionic and molecular associates characteristic;
  • Study of thermo-ion emission from solid electrolytes.
  • Objects of investigation are: halides of alkaline, alkali-earth metals and lanthanides as well as different classes of solid electrolytes.

Professor A.M. Pogrebnoy was the first to discover large ionic and molecular associates in vapours over halides of lanthanides. It has been shown that solid electrolytes are effective emitters of ions and ionic associates. A number of studies on polymer materials gas-permeability and on porophores decomposition kinetics by mass-spectrometric method have been performed. The researches have been several times supported by the grants of the International Program in the field of science.

The most significant works:

  1. A.M. Pogrebnoy, L. S. Kudin, A.Yu. Kuznetsov, M. F. Butman. Molecular and Ionic Clusters in Saturated Vapour over Lutetium Trichloride Rapid Communications in Mass Spectrometry. 1997. Vol. 11. PP. 1536-1546.
  2. A.M. Pogrebnoy, L. S. Kudin, K. V. Rakov. Thermo-emission of Molecules and Ions from Solid Electrolytes CsAg4I5 and KAg4I5 Zhurnal Fizitcheskoy Khimii. 2001. Vol. 75. No 5. PP. 825-830 [in Russian]
  3. A.M. Pogrebnoy, L. S. Kudin. Formation Enthalpies of Neutral and Charged Components of Saturated Europium Dichloride Vapour Zhurnal Fizitcheskoy Khimii. 2003. Vol. 77. No 1. PP. 21-29 [in Russian]
Vladimir V. Rybkin

Vladimir V. Rybkin

Doctor of Chemical Science, Professor of Department of Electronic Devices and Materials

V.V. Rybkin is an expert on physics and chemistry of non-equilibrium plasma and its applications for material treatment, head of the research group.

The main methods of studies are: mass-spectrometry, optical emission and absorption spectroscopy, electron-spin resonance spectroscopy, Lagmuir probes, Fourier Transform Infrared by Attenuated Total Reflectance. Special in-house created methods of numerical modelling of plasma systems are applied also. These methods are based on self-consisted solution of Boltzmann equation for plasma electrons, equations of vibrational and chemical kinetics as well as equations of charge balance.

Extensive studies of physico-chemical properties of low pressure plasmas in oxygen, air, oxygen-nitrogen mixtures and some others as well as processes of interaction of these plasmas with the surface of some polymer materials (polyethylene, polypropylene, polyethylene terephthalate, polyimide etc.) have been carried out. As a result, the scientific foundations of methods for simulation of plasma chemical reactor operation for polymer material treatment were created. Lately intensive studies in the field of physico-chemical properties of atmospheric pressure plasma with liquid electrodes and its application for polymer modification for immobilization of different organic molecules on polymer surface have been accomplished.

Studies of the research group were supported with different grants including Russian Foundation for Basic Researches, INCO COPERNICUS, Korean Organization of Science and Engineering Foundation and some others. The research group has close scientific and educational relations with some Universities abroad including Karlov University Prague, Czech Republic), Pierre and Marie Curie University Paris, France), Chungnam National University (The Republic of Korea).

The most significant works:

  1. V. Rybkin, A. Bessarab, E. Kuvaldina, A. Maximov, V. Titov. Self-Consistent Analysis of Low-Temperature Oxygen Plasma and Processes of its Interaction with Some Polymer Materials Pure & Appl. Chem. 1996. Vol.68. No5. PP. 1041-1045
  2. A-M. Diamy, J-C. Legrand, V. Rybkin, S. Smirnov. Experimental Study and Modelling of Formation and Decay of Active Species in an Oxygen Discharge Contr. Plasma Phys. 2005. Vol.45. No 1. PP. 5-21.
  3. V.A.Titov, V.V. Rybkin, A.I. Maximov, H.-S. Choi. Characteristics of Atmospheric Pressure Air Glow Discharge with Aqueous Electrolyte Cathode Plasma Chemistry and Plasma Processing. 2005. Vol.25. No 5. PP. 503-518.
Victor G. Solomonik

Victor G. Solomonik

Doctor of Chemical Science, Professor of Physics Department

His field of scientific interests is quantum chemistry, molecules structure and spectra.

The main directions of activity are: Development of the ab initio quantum chemical calculation methods of vibronic spectra of a molecule; Ab initio study of structure and spectra of simple and complex inorganic molecules and ions.

The most important results obtained are the following:

  1. The set of effective ab initio methods of the force fields and vibronic molecular spectra calculation has been developed. It provides carrying on sensitive investigations of complex polyatomic molecules applying high approaches of ab initio quantum chemistry by means of PC.
  2. Significant contribution to the theory and methodology development of ab initio calculation of observed properties of structure-unrigid molecules and molecules possessing low lying excited electron states, including the molecules displaying the Jahn-Teller effect, has been made.
  3. Structure and spectra of more that several hundreds of simple and complex molecules and ions existing under a high temperature in gaseous phase have been studied by the ab initio calculation quantum chemistry methods.

Professor Solomonik conducts research in cooperation with some quantum chemistry laboratories and groups abroad. His works were supported with the grants of International and Russian foundations.

The most significant works:

  1. V. G. Solomonik, J. E. Boggs, J. F. Stanton. Jahn-Teller Effect in VF3 J. Phys. Chem. 1999. Vol. 103. P. 838.
  2. V. G. Solomonik, A. V. Marenich. Isomerism and Vibronic Spectra of Alkaline Metal Perrenates: ab initio Calculations by CISD+Q method Zhurnal Structurnoy Khimii. 2001. Vol. 42. No 6. P. 1097 [in Russian]
  3. V. G. Solomonik, T.P. Pogrebnaya. Jahn-Teller Effect in Molecules of Vanadium, Niobium and Tantalum Tetrafluorides Zhurnal Neorganitcheskoy Khimii. 2001. Vol. 46. No 12. P. 2039. [in Russian]
Vladimir I. Svetsov

Vladimir I. Svetsov

Doctor of Chemical Science, Professor, Head of Department of Electronic Devices and Materials, Vice-Rector on Academic Affairs

Professor Svetsov is the head of the scientific trend “Kinetics and mechanisms of low-temperature non-equilibrium plasma interaction with solid inorganic materials” and the head of the corresponding scientific group.

Methods applied are mass-spectrometry, optical emission and absorption spectroscopy, electron-spin resonance spectroscopy, physical methods of plasma parameters measurement and mathematical modelling of non-equilibrium plasma of molecular gases.

The gases under investigation are: helium, neon, argon, krypton, xenon, hydrogen, nitrogen, oxygen, carbon oxide and dioxide, chlorine, bromine, water vapour, ammonia, tetrachloro- and tetraflouromethane, sulfur hexafluoride and various gaseous mixtures. Solids under study are: iron, nickel, cobalt, copper, molybdenum, gallium arsenide, aluminium, carbonic materials, dielectrics (glass, ceramics, quartz).

In his studies professor Svetsov determined the conditions of highest possible active particles concentrations generation. Kinetic regularities and mechanisms of non-equilibrium plasma of molecular gases interaction with inorganic materials have been studied in detail both for pure gases and for their mixtures; models of heterogeneous interaction of active plasma species with solids have been proposed.

Lately the main attention is given to the research of heterogeneous plasma chemical processes in halogen and halogen hydride mixtures with noble and molecular gases.

The most significant works:

  1. V. I. Svetsov, D. V. Sitanov , A. M. Efremov. Atom Formation Mechanism in Plasma of Chlorine and Nitrogen Mixtures High Energy Chemistry. 1999. Vol. 33. No 2. PP. 137-141. [in Russian]
  2. V. I. Svetsov, A. M. Efremov, N. L. Ovchinnikov. Gallium Arsenide Plasma Chemical Etching in Mixtures of Chlorine and Argon Microelectronics. 1999. Vol. 28. No 1. PP. 16-20. [in Russian]
  3. V. I. Svetsov, A. M. Efremov, D. I. Balashov. Compilation of Cross Section Data of Elementary Processes of HCl Applicable for Plasma Modelling Contribution Plasma Phys. 1999. Vol.39. No 3. PP. 247-250.