46 Result(s)

Article

Dependence of the Acoustic Signal Value on the Energy of a Femtosecond Pulse in Aqueous Aerosol and in Aqueous Aerosol with Silver Nanoparticles

Experimentally obtained dependences of acoustic signals on the energy of femtosecond pulses propagating in the filamentation mode in a liquid-drop aerosol with nanoparticles of different concentrations simulat...

V. A. Donchenko, S. S. Golik, Al.A. Zemlyanov, A. Yu. Mayor… in Russian Physics Journal (2023)

Article

Ionization Processes in a Carbon Aerosol Upon Exposure to Long Laser Pulses. II

An experimental setup and a technique for measuring the temperature and concentration of carbon and barium oxide particles in an ionized dispersed medium are described. It is shown that in a wide-aperture Nd lase...

S. F. Balandin, V. A. Donchenko, V. F. Myshkin, A. I. Potekaev… in Russian Physics Journal (2022)

Article

Ionization Processes in a Carbon Aerosol Upon Exposure to Long Laser Pulses. I

The interaction mechanisms of low-energy long-duration (~1 ms) laser pulses with dispersed particles in air are considered. The basic equations describing the mechanisms of particle motion in a plasma flow dur...

S. F. Balandin, V. A. Donchenko, V. F. Myshkin, A. I. Potekaev… in Russian Physics Journal (2022)

Article

Electromagnetic Energy Transfer in the Atmosphere Ionized by Laser Radiation

The physical processes occurring in the atmosphere, when weak ionization channels are formed by laser radiation, are discussed. An electromagnetic energy transmission scheme is proposed and the parameters nece...

S. F. Balandin, V. A. Donchenko, V. F. Myshkin, A. I. Potekaev… in Russian Physics Journal (2022)

Article

Femtosecond Laser Filamentation in Liquid Spray

The paper presents the femtosecond laser filamentation, which splits the liquid spray into two jets. The dependence is suggested for the acoustic signal and the femtosecond pulse energy, which identifies the l...

A. A. Zemlyanov, P. A. Babushkin, S. S. Golik, V. A. Donchenko… in Russian Physics Journal (2022)

Article

Physical Processes of Generating Electric and Magnetic Fields in the Channel of СО₂-Laser Pulse Propagation

Mechanisms of generating electric and magnetic fields during propagation of microsecond CO₂-laser pulses in the atmosphere along long paths are considered. The wavelength range of radiation selected for our resea...

S. F. Balandin, V. A. Donchenko, V. F. Myshkin, V. A. Khan in Russian Physics Journal (2021)

Article

Energy Characteristics of Non-Resonator Generation in Nanodispersed Active Media Irradiated with Femtosecond Laser Pulses

Results of experimental measurements of the energy characteristics of stimulated emission in coumarin-30 and rhodamine 6G dyes with nanoparticles under irradiation with femtosecond laser pulses are presented. ...

P. A. Babushkin, V. A. Donchenko, Al. A. Zemlyanov… in Russian Physics Journal (2020)

Article

Stimulated Emission Thresholds of Ethanol Solution of Coumarin-30 Dye with Incorporated ZnO Nanoparticles Upon Irradiation with Femtosecond Laser Pulses

Experimental results of measuring the threshold power density of stimulated emission in coumarin-30 dye solutions with ZnO nanoparticles upon irradiation with femtosecond laser pulses are presented. It is show...

P. A. Babushkin, A. V. Burnashov, V. A. Donchenko… in Russian Physics Journal (2020)

Article

Electrical Conductivity in a Laser Beam Channel

Electrical conductivity in a laser beam channel has been investigated. Oscillations of the conductivity caused by the oscillation motion of electrons in laser-induced breakdown plasma are established in an ext...

S. F. Balandin, V. A. Donchenko, Al. A. Zemlyanov, V. F. Myshkin… in Russian Physics Journal (2020)

Article

Lower-Threshold Ionization in Laser Channel Propagation

The paper considers the creation of long ionized channels in atmospheric aerosol based on the combustion and detonation processes. The literature review is performed in this field. Special attention is given t...

E. S. Abramova, S. F. Balandin, V. A. Donchenko, V. F. Myshkin… in Russian Physics Journal (2020)

Article

Creation of Laser-Induced Long Ionized Channels in Air Suspension

The paper deals with the propagation of the powerful laser beam in gas-dispersion systems and atmospheric aerosol background, which is accompanied by a wide spectrum of thermal, acoustic-and-hydrodynamic and i...

E. S. Abramova, S. F. Balandin, V. A. Donchenko, V. F. Myshkin… in Russian Physics Journal (2020)

Article

Electrical Parameters of a Laser Beam Channel in the Atmosphere. II

Results of measurements of the conductivity and electric field strength in the laser radiation propagation channel and near it are presented. An experimental setup and measurement scheme are described. The dat...

S. F. Balandin, V. A. Donchenko, Al. A. Zemlyanov, V. F. Myshkin… in Russian Physics Journal (2019)

Article

Electrical Parameters of a Laser Beam Channel in the Atmosphere. I

Results of measurements of the conductivity in the laser radiation propagation channel not only in laboratory, but also outdoors for laser radiation focused in the free atmosphere are presented. An experimenta...

S. F. Balandin, V. A. Donchenko, Al. A. Zemlyanov, V. F. Myshkin… in Russian Physics Journal (2019)

Article

Physical Principles of Creation of Ionization Channels in the Atmosphere Under cw and Pulsed Laser Irradiation

Works are analyzed from which the possibility follows of ionization of the atmosphere upon exposure to laser radiation to develop laser antennas and systems of protection from lightning. Various effects leadin...

V. A. Donchenko, S. F. Balandin, B. Zh. Kemel’bekov… in Russian Physics Journal (2018)

Article

A Selective Pulse-Induction Metal Detector

A. I. Potekaev, G. N. Parvatov, I. M. Smirnov, N. P. Vintonyak… in Russian Physics Journal (2018)

Article

Status and Prospects for Develo** Electromagnetic Methods and Facilities for Engineer Reconnaissance in Russia

An analysis of the most effective methods, techniques and scientific-research developments of induction mine detectors is performed, their comparative tactical-technical characteristics are reported, and prior...

A. I. Potekaev, V. A. Donchenko, S. D. Zambalov, G. N. Parvatov… in Russian Physics Journal (2018)

Article

Comparison of the Efficiency of Cavityless Lasing in Thin Layers of the Active Medium with Agglomerates of Ag, Al, and Al₂O₃ Nanoparticles

Characteristics of cavityless lasing in thin layers of rhodamine 6G (R6G) solutions doped with aluminum, silver, and aluminum oxide agglomerated nanoparticles are experimentally investigated. It is demonstrate...

V. A. Donchenko, S. P. Zhuravkov, Al. A. Zemlyanov… in Russian Physics Journal (2016)

Article

Peculiarities of Lasing in Solutions of R6G with Agglomerated Metallic Nanoparticles

A physical interpretation is given for the experimentally observed substantial lowering of the lasing thresholds and the blue shift of the peak of the stimulated emission spectrum of a solution of the laser dy...

V. A. Donchenko, I. A. Edreev, Al. A. Zemlyanov, V. A. Kharenkov in Russian Physics Journal (2013)

Article

Influence of scattering on superluminescence in composites dye solution – nanoparticles

Spectral and energy luminescence characteristics of R6G dye solutions in ethanol with addition of Ag nanoparticle suspensions in different aggregate states are experimentally investigated. It is demonstrated t...

V. A. Donchenko, Al. A. Zemlyanov, N. S. Panamarev… in Russian Physics Journal (2011)

Article

Number of electric charges per unit mass of a substance

I. G. Sokovets, V. A. Donchenko in Russian Physics Journal (2011)