Valeriy Azyazov

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Curriculum Vitae

VALERIY N. AZYAZOV

Department of Chemical & Electric Discharge Lasers

P.N. Lebedev Physical Institute , Samara Branch

221 Novo-Sadovaya

Samara, 443011, Russia

(8846) 334-4220

e-mail: azyazov@fian.smr.ru

Education

Doctor of Science, Laser Physics, Samara State University, Samara, Russia, 05/23/2008.
Thesis: “Kinetics of electronically and vibrationally excited species in the oxygen-iodine laser medium”.

PhD, Laser Physics, P.N. Lebedev Physical Institute, Moscow, Russia, 03/27/1995.
Thesis: “Energy efficiency of chemical oxygen-iodine laser”.
Advisor: Marsel V. Zagidullin.

M.S., Physics, with great distinction, June 1982, (Principal Researcher Nikolay L. Kupriyanov), Samara State University, Russia.

Research Experience

1982-1991    Researcher, Theoretical Department of Samara Branch of P.N. Lebedev Physical Institute SB LPI (Samara, Russia).

• Studied theoretically output characteristics of a chemical oxygen-iodine laser (COIL). Developed a simple and universal one-dimensional model of a gas-liquid chemical singlet oxygen generator in which mass and heat transport in the gas and in the liquid was described with the help of empirical mass-transfer coefficients.
  
• Proposed a new channel of I₂ dissociation in COIL active medium involving vibrationally excited singlet oxygen molecule.
• Proposed a new mechanism of heterogeneous relaxation of electronically excited iodine atoms I(²P_1/2) in the active medium of oxygen-iodine laser.

Co-workers: Katulin V.A., Igoshin V.I., Kuprianov N.L. and Yuryshev N.N.

1992-2000         Researcher, Department of Chemical & Electric Discharge Lasers of SB LPI.

• Designed and built a jet-type singlet oxygen generator and studied its properties. Obtained a record density of electronically excited oxygen molecules O₂(¹Δ) up to 10¹⁸ cm^-3 at gas temperatures close to ambient.
• Demonstrated an operation of a subsonic COIL with a drop-jet generator of singlet oxygen, operating at pressures up to 90 Torr.
• Devised a method to measure the rates of chemisorptions in the gas-liquid chemical reactions. Designed and built a single laminar jet gas-liquid reactor to study the kinetics of gas-liquid chemical reactions. Studied the kinetics of chemisorptions of Cl₂ by H₂O-H₂O₂-KOH and H₂O-KOH solutions. Measured the rate constants of liquid reactions of chlorine molecule with HO₂^- and OH^- ions using single laminar jet gas-liquid reactor. 

Co-workers: Nikolaev V.D., Zagidullin M.V., Khvatov N.A. and Svistun M.I.

2000-2005      Senior Researcher, Department of Chemical & Electric Discharge Lasers of SB LPI.

• Designed and built a flow tube apparatus for kinetic studies of chemical and energy exchange processes in the gas phase. Recorded the luminescence spectra of the singlet oxygen dimoles at 703, 634 and 578 nm at the output of a drop-jet singlet-oxygen generator with a resolution of 0.15 nm in the range of gas-temperature T = 150 - 350 K. Measured vibrational population of oxygen molecules at the output of the generator using emission spectroscopy technique.
• Designed and built a chemical oxygen-iodine laser. Demonstrated its efficient operation in subsonic and supersonic modes with the N₂ and CO₂ buffer gases.
• Studied experimentally and theoretically a distribution of O₂ molecules over vibrational levels in O₂(¹Δ)/I mixture. Detected vibrationally excited O₂ molecules using emission spectroscopy technique.
• Detected emission spectra of iodine molecule in the visible range in the O₂(¹Δ)/I₂ mixture.  Proposed the mechanism for formation of electronically excited iodine molecule I₂(B³Π₀) in the presence of singlet oxygen. Detected the vibrationally excited O₂(¹Δ,v=1) molecules using infrared emission spectroscopy.
• Contributed to the development of Heidner-Lilenfeld-Azyazov-Heaven model of iodine molecule dissociation in the presence of singlet delta oxygen.

Co-workers: Antonov I.O., Safonov V.S., Ufimtsev N.I., Pichugin S.Yu. and Heaven M.C.

2005-2006      Visiting Scientist, Chemistry Department of Emory University (Atlanta, USA).

• Measured kinetic constants of chemical and energy exchange processes in the O₂/O₃/I₂/CF₃I/CO₂/NO₂/N₂O gaseous mixtures using pulsed laser technique, laser induced fluorescence, emission spectroscopy in the Dr Michael Heaven’s laboratory. Designed and built a photolysis cell for kinetic studies of elementary processes. Measured the rate constants of quenching of electronically excited iodine molecule     I₂(A′³Π_2u) by CO₂, I₂, Ar. Measured the rate constants of quenching of electronically excited iodine atom I(²P_1/2) by O, O₃, NO₂, N₂O₄ and N₂O.
• Measured the fraction of electronically excited oxygen molecule O₂(¹Δ) produced by the reaction O(¹D) + N₂O --> O₂(¹Δ) + N₂  to be > 0.9.
• Studied kinetics in the O/O₂/O₃ system using pulsed laser photolysis technique and emission spectroscopy. Measured the rates of O₂(¹Δ) quenching in O(³P)/O₂/O₃/CO₂/He/Ar mixtures. Re-measured the rate constants of quenching of O₂(¹Σ) by O₃ and CO₂.

Co-workers: Antonov I.O., Kabir H.M., Mikheyev P.A., Postell D.  and Heaven M.C.

2007-till now  Leading Researcher, Department of Chemical & Electric Discharge Lasers of SB LPI.

• Developed the model for calculation of distribution of iodine molecules over vibrational levels in the presence of singlet oxygen taking into account the excitation, relaxation and dissociation processes.
• Studied the output characteristics of an electric discharge iodine atoms generator using laser induced fluorescence and emission spectroscopy. Performed comparison of two methods of oxygen-iodine medium production-conventional, by means of I₂ dissociation in the singlet oxygen flow and with iodine atoms produced externally in the electric discharge generator in a flow cell apparatus. Demonstrated a cw chemical oxygen-iodine laser operating in a subsonic mode with a high water content of about 15% and external production of iodine atoms in CH₃I/Ar dc glow discharge.
• Created a new laboratory to study kinetics of chemical and energy exchange processes using pulsed laser technique, laser induced fluorescence, emission spectroscopy etc. Observed a fast quenching effect and an incomplete ozone recovery effect in pure oxygen-ozone mixture. Determined the contribution of these effects on the balance of singlet oxygen and ozone molecules in the middle atmosphere.
  
  

Co-workers: Mikheyev P.A., Ufimtsev N.I., Pichugin S.Yu., Torbin A.P.

Teaching Experience

2012 - till now Associate Professor, Department of Physics, Samara State Aerospace University, Samara, Russia

Designed special courses related to the atmospheric chemistry, kinetics of chemical and energy exchange processes.

2009-2011       Assistant Professor, Department of Physics, Samara State University, Samara, Russia.

Designed and taught special courses related to the kinetics of chemical and energy exchange processes in the non-equilibrium mixtures. Advised 5 graduate students that defended the M.Sc. in Physics.

2002                 Samara Branch of P.N. Lebedev Physical Institute, Samara, Russia

Advised PhD thesis of Nikolay I. Ufimtsev: “Kinetics of vibrationally excited oxygen in the chemical oxygen-iodine laser”

Awards

2009              Prize-winner of best scientific works of P.N. Lebedev Physical Institute
2009              Prize of Science Department of Samara province government
2004              Honorary diploma of P.N. Lebedev Physical Institute
1989               Prize-winner of young scientist competition of P.N. Lebedev Physical Institute

Grant principal investigator:

1. U.S. Civilian Research & Development (CRDF) -RC1-2516-SA-03: “Determination of dominant I₂ dissociation pathway in singlet oxygen”, 2003-2004;
2. International Science & Technology Centre (ISTC) No 2907p: “Experimental and theoretical study of laser behavior of I-O₂(¹D)-CO₂ mixture”, 2004;
3. Russian Foundation of Basic Research (RFBR) 04-02-96506: “Energy exchange reactions in oxygen-iodine medium with high density of electronical and vibrational excitation”, 2004-2005.
4. Samara province government grant: “Kinetics of excited species in oxygen-iodine medium”, 2008;
5. Russian Foundation of Basic Research (RFBR) 08-02-12035: “Chemical oxygen-iodine laser with electric discharge iodine atoms generator”, 2008-2009.
6. Ministry of Education and Science of Russian Federation, 16.740.11.0494: “The rate of ozone regeneration in the atmosphere in the presence of singlet delta oxygen and vibrationally excited ozone”, 2011-2013.
7. Russian Foundation of Basic Research (RFBR) 14-05-97013: “Measurements of kinetic constants of atmospheric processes involving active oxygen species”, 2014-2016

 

©2014 Valeriy Azyazov  |   P.N. Lebedev Physical Institute, Samara Branch