Dr. Valery Dmitrievich Nikolaev Profile

Dr. Valery Dmitrievich Nikolaev

at PN Lebedev Physical Institute

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Author

Publications (18)

Proceedings Article | 18 April 2009 Paper

Supersonic COIL driven by centrifugal bubbling SOG with efficient depletion of chemicals in single pass

Marsel Zagidullin, Valery Nikolaev, Nikolay Khvatov, Michael Svistun

Proceedings Volume 7131, 713109 (2009) https://doi.org/10.1117/12.815908

KEYWORDS: Chlorine, Oxygen, Chemical oxygen iodine lasers, Chlorine gas, Charge-coupled devices, Helium, Chemical lasers, Spectrometers, Laser resonators, Liquids

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Proceedings Article | 26 April 2007 Paper

Performance of high pressure COIL with centrifugal bubble singlet oxygen generator

Marsel Zagidullin, Valery Nikolaev, Nikolay Khvatov, Michael Svistun

Proceedings Volume 6346, 63460B (2007) https://doi.org/10.1117/12.737169

KEYWORDS: Chlorine, Oxygen, Chemical oxygen iodine lasers, Chlorine gas, Helium, Liquids, Iodine, Chemical lasers, Estimation theory, Absorption

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Proceedings Article | 12 April 2007 Paper

Perspective methods for the generation of COIL gain medium

Marsel Zagidullin, Valery Nikolaev, Michael Svistun, Nikolay Khvatov

Proceedings Volume 6611, 66110A (2007) https://doi.org/10.1117/12.740587

KEYWORDS: Oxygen, Chlorine, Iodine, Chemical oxygen iodine lasers, Helium, Nitrogen, Chlorine gas, Liquids, Signal detection, Aerodynamics

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Proceedings Article | 23 March 2005 Paper

Efficient COIL driven by SOG with filament-guided jets

Marsel Zagidullin, Valery Nikolaev, Michael Svistun, Nickolai Khvatov

Proceedings Volume 5777, (2005) https://doi.org/10.1117/12.610969

KEYWORDS: Chlorine, Chlorine gas, Chemical oxygen iodine lasers, Oxygen, Liquids, Laser resonators, Temperature metrology, Nitrogen, Head, Gas lasers

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Proceedings Article | 23 March 2005 Paper

Ejector COIL with supersonic nozzles for driver N2

Valery Nikolaev, Gordon Hager, Michael Svistun, Marsel Zagidullin

Proceedings Volume 5777, (2005) https://doi.org/10.1117/12.610990

KEYWORDS: Nitrogen, Oxygen, Throat, Aerodynamics, Helium, Mirrors, Chemical oxygen iodine lasers, Chlorine, Analytical research, Iodine

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Proceedings Article | 20 September 2004 Paper

High-gain high-pressure highly efficient COIL

Marsel Zagidullin, Valery Nikolaev, Michael Svistun, Nikolai Khvatov, Gordon Hager

Proceedings Volume 5448, (2004) https://doi.org/10.1117/12.546483

KEYWORDS: Nitrogen, Chlorine, Iodine, Laser induced fluorescence, Chemical oxygen iodine lasers, Oxygen, Aerodynamics, Helium, Mirrors, Visualization

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Proceedings Article | 16 June 2004 Paper

Ejector COIL

Valeriy Nikolaev, Michael Svistun, Marsel Zagidullin

Proceedings Volume 5479, (2004) https://doi.org/10.1117/12.558181

KEYWORDS: Nitrogen, Chemical oxygen iodine lasers, Iodine, Oxygen, Throat, Aerodynamics, Mirrors, Chlorine, Laser induced fluorescence, Visualization

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Proceedings Article | 13 September 2002 Paper

Lasing performance of a chemical oxygen iodine laser (COIL) with advanced ejector nozzle banks

Nickolay Khvatov, Valeri Nikolaev, Michael Svistun, Marsel Zagidullin, Gordon Hager

Proceedings Volume 4760, (2002) https://doi.org/10.1117/12.482127

KEYWORDS: Nitrogen, Oxygen, Iodine, Chlorine, Chemical oxygen iodine lasers, Mirrors, Throat, Aerodynamics, Helium, Laser induced fluorescence

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Proceedings Article | 4 May 2000 Paper

1.4 kW lasing of COIL with 5-cm gain length and nitrogen dilution

Marsel Zagidullin, Valeri Nikolaev

Proceedings Volume 3931, (2000) https://doi.org/10.1117/12.384266

KEYWORDS: Nitrogen, Chemical oxygen iodine lasers, Throat, Chlorine, Iodine, Mirrors, Oxygen, Chemical lasers, Chlorine gas, Laser applications

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Proceedings Article | 7 June 1999 Paper

COIL with longitudinal pumping out and small iodine flow rate

Marsel Zagidullin, Valeri Nikolaev

Proceedings Volume 3612, (1999) https://doi.org/10.1117/12.350640

KEYWORDS: Iodine, Chemical oxygen iodine lasers, Nitrogen, Mirrors, Helium, Oxygen, Laser resonators, Combustion, Doppler effect, Absorption

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Proceedings Article | 20 January 1999 Paper

State of the art and perspectives of chemical oxygen-iodine lasers

Marsel Zagidullin, Valeri Nikolaev

Proceedings Volume 3688, (1999) https://doi.org/10.1117/12.337562

KEYWORDS: Chemical oxygen iodine lasers, Oxygen, Iodine, Chlorine, Laser resonators, Chemical lasers, Nitrogen, Industrial chemicals, Chemical analysis, Chlorine gas

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Proceedings Article | 22 December 1998 Paper

Sub- and supersonic COILs driven by a jet-type singlet oxygen generator

Marsel Zagidullin, Valeri Nikolaev, Nickolay Khvatov, Michael Svistun

Proceedings Volume 3574, (1998) https://doi.org/10.1117/12.334439

KEYWORDS: Chemical oxygen iodine lasers, Oxygen, Iodine, Nitrogen, Laser resonators, Mirrors, Throat, Chlorine, Chemical lasers, Chemical analysis

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Proceedings Article | 12 May 1998 Paper

Comparative analysis of the different methods of preparing active media in a supersonic COIL

Valeri Nikolaev

Proceedings Volume 3268, (1998) https://doi.org/10.1117/12.308063

KEYWORDS: Oxygen, Chemical oxygen iodine lasers, Iodine, Chlorine, Chlorine gas, Nitrogen, Chemical analysis, Throat, Head, Chemical lasers

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Proceedings Article | 4 April 1997 Paper

Optimization of jet singlet oxygen generator for chemical oxygen-iodine laser

Otomar Spalek, Jarmila Kodymova, Marsel Zagidullin, Valeri Nikolaev

Proceedings Volume 3092, (1997) https://doi.org/10.1117/12.270132

KEYWORDS: Oxygen, Chemical lasers, Liquids, Chlorine, Chemical oxygen iodine lasers, Photodiodes, Protactinium, Iodine, Signal processing, Resonators

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Proceedings Article | 29 March 1996 Paper

Buffer gas mixing with active gas on chemical oxygen-iodine laser performance with jet type SOG

Marsel Zagidullin, Valeri Nikolaev, Michael Svistun, Vladimir Safonov, Nikolay Ufimtsev

Proceedings Volume 2702, (1996) https://doi.org/10.1117/12.236885

KEYWORDS: Chlorine, Oxygen, Chlorine gas, Chemical oxygen iodine lasers, Iodine, Laser resonators, Chemical lasers, Argon, Liquids, Throat

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Proceedings Article | 13 February 1996 Paper

Predicted and measured output parameters of high pressure jet SOG

Marsel Zagidullin, Valeri Nikolaev, Michael Svistun, Nikolay Ufimtsev

Proceedings Volume 2767, (1996) https://doi.org/10.1117/12.232189

KEYWORDS: Chlorine, Chlorine gas, Oxygen, Diffusion, Liquids, Ions, Chemical lasers, Mathematical modeling, Temperature metrology, Molecules

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Proceedings Article | 13 February 1996 Paper

Current COIL research in Samara

Valeri Nikolaev

Proceedings Volume 2767, (1996) https://doi.org/10.1117/12.232183

KEYWORDS: Oxygen, Chemical oxygen iodine lasers, Chlorine, Ions, Cavitation, Free space, Diffusion, Chemical lasers, Argon, Thermal effects

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Development of the high pressure singlet oxygen generator (SOG) is a very important aspect for chemical oxygen-iodine laser (COIL). Increasing of oxygen pressure up to 30 torr and more at conserving high O₂(¹(Delta) ) yield and maintaining BHP temperature at minus (10 divided by 20) degrees Celsius permits us to decrease ration [H₂O]/[O₂] to 5% and less. In this case COIL can operate successfully without a water vapor trap. With raising the total pressure Reynolds number increases too, diminishing boundary layers in supersonic nozzles and improving pressure recovery. The weight and dimensions of the SOG and laser become reduced for the same gas flow rate. For solving these problems the jet SOG has been suggested and developed in Lebedev Physical Institute, Samara Branch. The advantages of the jet SOG consist of the following: (1) Large and controlled specific surface of contact liquid-gas provides for high mass transfer efficiency. (2) High jets velocity guarantees fast basic hydrogen peroxide (BHP) surface renovation. (3) High gas velocity in the reaction zone diminishes O₂(¹(Delta) ) quenching. (4) Efficient gas-liquid heat exchange eliminates the gas heating and generation water vapor due O₂(¹(Delta) ) quenching. (5) Counterflowing design of the jet SOG produces the best conditions for self-cleaning gas flow of droplets in the reaction zone and gives the possibility of COIL operation without droplets separator. High pressure jet SOG has some features connected with intrachannel jet formation, free space jets reconstruction, interaction jets ensemble with counter moving gas flow and drag part of gas by jets, disintegrating jets, generation and separation of droplets, heat effects, surface renovation, impoverishment BHP surface by HO₂^- ions, moving solution film on the reaction zone walls, etc. In this communication our current understanding of the major processes in the jet SOG is set forth. The complex gas and hydrodynamic processes with heat and mass transfer, chemical reactions, generation of the relaxing components with high energy store take place in the SOG reaction zone. It is impossible to create a sufficiently exact model of such a jet SOG taking into account all the enumerated processes. But some approximations and simplifications allow us to determine what the main jet SOG parameters parts are for designing COIL.

Proceedings Article | 10 December 1992 Paper

Unstable resonator with semitransparent output coupler for transverse-flow CO2 laser

Pavel Mikheyev, Valeri Nikolaev, Alexander Shepelenko

Proceedings Volume 1752, (1992) https://doi.org/10.1117/12.130740

KEYWORDS: Resonators, Mirrors, Output couplers, Diffraction, Numerical simulations, Carbon dioxide lasers, Near field, Gas lasers, Laser resonators, Signal attenuation

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Showing 5 of 18 publications

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