A5032176122- Spectroscopy and Quantum Chemical Studies
- Spectroscopy Techniques in Biomedical and Chemical Research
- Spectroscopy and Laser Applications
- Chemical and Physical Studies
- Spectroscopy and Chemometric Analyses
- Molecular spectroscopy and chirality
- Laser-induced spectroscopy and plasma
- Water Quality Monitoring and Analysis
- Mechanical and Optical Resonators
- Quantum optics and atomic interactions
- Analytical chemistry methods development
- Laser-Matter Interactions and Applications
- Photoreceptor and optogenetics research
- Atmospheric Ozone and Climate
- Biofield Effects and Biophysics
- Quantum, superfluid, helium dynamics
- Photonic and Optical Devices
- Molecular Spectroscopy and Structure
- Laser Design and Applications
- Optical Imaging and Spectroscopy Techniques
- Near-Field Optical Microscopy
- Photoacoustic and Ultrasonic Imaging
- Magnetic and Electromagnetic Effects
- Nonlinear Optical Materials Studies
- Oil Spill Detection and Mitigation
Prokhorov General Physics Institute
2015-2024
Bauman Moscow State Technical University
2020
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
1993-2020
Concern Energomera (Russia)
2016
Russian Academy of Sciences
2004-2015
Vavilov Institute of General Genetics
1990-1995
Institute of Applied Physics
1990
Lomonosov Moscow State University
1976-1979
Three main spectral components ∼ 3210, 3450, and 3650 cm -1 separated by deep gaps in the Raman OH band of liquid water have been detected a new treatment procedure experimental data. The applied is based on statistics fractional moments. This approach includes consideration total set moments (the even complex ones) generalized mean value functions (GMV) as specific noise ``label''. possibility extraction quantitative description fine structure averaging spectra demonstrated. In frame novel...
It is established for the first time by Raman scattering of second-harmonic pulses an Nd:YAG laser that there are molecular complexes with frequencies ∼3600, ∼3450, and ∼3200 cm-1 (which characteristic dimers, tetramers, ice-like hexamers observed in H2O beams) water at temperatures 13 — 99°C. The frequency ice hexameric component found to shift only slightly increase temperature, whereas its contribution decreases but remains significant, a simultaneous small complexes.
A comparison of laser ablation by a train picosecond pulses and nanosecond revealed difference in craters, thresholds, plasma sizes spectral line intensities. Laser with resulted improved crater quality while ablated mass decreased up to 30%. reduction dimensions for was observed the intensity atomic/ionic lines spectra greater factor 2–4 indicating an excitation atomization plasma.
The four-photon laser spectroscopy of molecular motions [1] distilled water in the terahertz and subterahertz spectral ranges is employed to observe resonant lines related rotational transitions ortho para nuclear spin isomers H2O molecule. It demonstrated that intensity ratio ortho/para several samples decreases by a factor 2.0–2.5 comparison with gas-phase ratio. A violation equilibrium upon condensation vapor interpreted as manifestation selectivity formation H-bonded complexes isomers....
Abstract The unexpectedly narrow structure of Rayleigh wing spectra from 5 to 50 cm −1 was detected using four‐photon coherent laser spectroscopy. observed features were compared with the IR water vapor absorption (from HITRAN database) and spontaneous Raman spectrum in phase. fairly good resemblance between our recorded pure rotational H 2 O molecules gas phase allows suggestion that a discernible proportion may exhibit virtually free rotation liquid Copyright © 2005 John Wiley & Sons, Ltd.
A scientific session of the Physical Sciences Division Russian Academy (RAS) was held in Conference Hall Lebedev Physics Institute, Sciences, on 29 March 2006. The following reports were presented at session: (1) Bunkin F, Nurmatov A, Pershin S M (Wave Research Center Prokhorov General RAS, Moscow) Coherent four-photon spectroscopy low- frequency molecular librations a liquid; (2) Simonenko V (Russian Federal Nuclear — Zababakhin All-Russia Scientific Institute Technical Physics, Snezhinsk,...
The interaction of laser pulses with the Cauliflower mosaic virus (CaMV) in a Tris-HCl pH7.5 buffer is investigated. 20 ns ruby are used for excitation. Spectra light passing through sample and reflected from it registered help Fabri–Perot interferometer. Stimulated low-frequency Raman scattering (SLFRS) CaMV suspension registered. SLFRS frequency shift, conversion efficiency threshold measured first time, to best our knowledge.
H 2 O molecules coherent librations in Milli-Q water and aqueous solution of α-hymotripsin protein sub-millimeter range (70–90 cm -1 ) are observed by four photon scattering technique for the first time. Perfect correlation detected resonances with rotational spectrum gas phase is found. Moreover a few lines ortho- para- isomers were identified. The presence directs to an essential gain four-photon signal. It was found that molecule interacts selectively para-isomers molecules.
Abstract Four‐photon spectra of the induced coherent rotations H 2 O, D O and HDO molecules on its selective rotational transition in bulk liquid have been observed for first time. We measured distilled water (H O) 1:1 O/D mixture range 30–40 cm −1 . identified ortho ‐ / para ‐spin‐isomer lines both isotopic liquids. The application this technique to study spin‐selective interactions with biopolymers nano objects is discussed. Copyright © 2008 John Wiley & Sons, Ltd.
Ratio of H2O ortho-/para-spin-isomers in water different treatment procedures (distilled or cavitation fountain) were studied by both Rayleigh wing four-photon spectroscopy and 1H nuclear magnetic resonance (NMR) spectroscopy. Low-frequency gas-like rotational resonances observed the 0.1–1.5 cm−1 (3–45 GHz) spectral range NMR proton density was measured samples. We established that intensity ortho-isomer line (616−523)0.74 increases factor ∼3.5 after distilled water. Moreover, same sample...