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Agency: European Commission | Branch: FP7 | Program: CPCSA | Phase: INFRA-2008-1.2.2 | Award Amount: 3.39M | Year: 2009

Many research groups and institutes within the European Research Area (ERA) are playing a central role in the production of a vast range of atomic and molecular (AM) data, data that is of critical importance across a wide range of applications such as astrophysics, atmospheric physics, fusion, environmental sciences, combustion chemistry and in industrial applications from plasmas to lighting.\n\nThrough the auspices of this infrastructure the Virtual Atomic and Molecular Data Centre (VAMDC) aims to build a secure, documented, flexible and interoperable e-science environment-based interface to the existing AM data. The VAMDC will be built upon the expertise of existing AM databases, data producers and service providers with the specific aim of creating an infrastructure that is easily tuned to the requirements of a wide variety of users in academic, governmental, industrial or public communities both within and outside the ERA. The project will cover the building of the core consortium, the development and deployment of the infrastructure and the development of interfaces to the existing AM databases as well as providing a forum for training potential users and dissemination of expertise across the ERA. It is expected that VAMDC becomes a European legal entity during the course of the project.

Lukin I.P.,Zuev Institute of Atmospheric Optics
Applied Optics | Year: 2014

Transformation of vortex Bessel beams during propagation in turbulent atmosphere is theoretically analyzed. Deforming influence of the random inhomogeneity of the turbulent medium on propagation of diffraction-free beams leads to disappearance of their invariant properties. In the given research, features of evolution of the spatial structure of distribution of mean intensity of vortex Bessel beams in turbulent atmosphere are analyzed. A quantitative criterion of possibility of carrying over of a dark central domain by vortex Bessel beams in a turbulent atmosphere is derived. The analysis of the behavior of several physical parameters of mean-level optical radiation shows that the shape stability of a vortex Bessel beam increases with the topological charge of this beam during its propagation in a turbulent atmosphere. © 2014 Optical Society of America.

Kochanov V.P.,Zuev Institute of Atmospheric Optics
Journal of Quantitative Spectroscopy and Radiative Transfer | Year: 2011

Line profiles expedient for the description of the simultaneous action of line mixing, narrowing, and dependence of collision relaxation constants on molecular speed have been constructed. It is shown that negligence of the mixing of overlapped lines and speed-dependence in the case when masses of absorbing and perturbing molecules are comparable leads to systematic errors in the principal absorption line parameters in tens of percent. © 2011 Elsevier Ltd.

Nikitin A.V.,Zuev Institute of Atmospheric Optics
Computer Physics Communications | Year: 2012

A new code designed to calculate the 6C, 9C, and 12C symbols for C3 v, Td, and Oh point groups is presented. The program is based on an algorithm that uses the symmetry property between pair and impair representations. This algorithm allows one to speed up the C-symbols calculation and increase the efficiency of spectroscopic programs based on the irreducible tensorial formalism. © 2011 Elsevier B.V.

Kochanov V.P.,Zuev Institute of Atmospheric Optics
Journal of Quantitative Spectroscopy and Radiative Transfer | Year: 2011

Analytical approximate expressions for speed-dependent Rautian-Sobel'man, Voigt, and general line profiles, including spectral line mixing, were obtained. Systematic errors of the approximate profiles are within 0.7% for the mass ratios of perturbing and absorbing molecules mb/ma≤9. The calculation time of the approximate line profiles is much shorter than the time required for calculating exact expressions for the line profiles. An approximate analytical expression for the observable homogeneous line width was derived. A least-square fitting of the singlet methane absorption line centered at 6107.17cm-1 was performed, using the approximate line profiles obtained. © 2011 Elsevier Ltd.

Banakh V.A.,Zuev Institute of Atmospheric Optics
Optics Letters | Year: 2011

The propagation of short broadband pulses in a homogeneous medium is analyzed on the basis of the wave equation and in the parabolic approximation of that equation. It is shown that the diffraction spreading of a focused optical pulsed beam does not occur in the limiting case of a δ pulse. © 2011 Optical Society of America.

Kochanov V.P.,Zuev Institute of Atmospheric Optics
Journal of Quantitative Spectroscopy and Radiative Transfer | Year: 2013

An application of one-dimensional velocity approach to calculation of speed-dependent spectral line profiles was considered. It was shown that a mean deviation of the line profile obtained within this approach from the line profile derived with integrating over three projections of an absorbing molecule's velocity does not exceed 1.1% at mass ratios of perturbing and absorbing molecules ≤9. Analytical approximate expressions for speed-dependent line profiles, including spectral line narrowing and mixing, were obtained for one- and three-dimensional velocity approaches. © 2013.

Kochanov V.P.,Zuev Institute of Atmospheric Optics
Journal of Experimental and Theoretical Physics | Year: 2014

Based on a quantum-mechanical expression for the kernel of the collision integral and the dispersion intermolecular interaction potential, we have calculated the line profiles in which the collisions with scattering through large and classical small angles as well as the diffraction scattering of molecules have been simultaneously taken into account. By comparing the calculated profiles with those in the models of hard velocity-changing collisions, we show that disregarding soft collisions leads to a noticeably sharper line shape. In an effort to quantitatively process the spectra, we have parameterized the calculated profiles and obtained their algebraic approximation. © Pleiades Publishing, Inc., 2014.

Lukin V.P.,Zuev Institute of Atmospheric Optics
Physics-Uspekhi | Year: 2014

In connection with the wide use of optoelectronic systems, we review the development of adaptive optics as an effective tool that allows using controllable optical elements to eliminate irregular distortions that occur as light propagates in an inhomogeneous medium. The subject matter of this rapidly developing field of science and technology is described. Of the ideas under development in recent years, many have been around for quite a long time, but it is only now, with the development of an up-to-date optoelectronic element base, that they have started being widely incorporated into science and engineering practice. We discuss the development of adaptive optics from mere ideas to their application in astronomy, high- power laser physics, and medicine. The current state of adaptive optics in stellar and solar astronomy is reviewed, and some results of its use in distortion correction systems of high-power laser systems and facilities are presented. © 2014 Uspekhi Fizicheskikh Nauk, Russian Academy of Sciences.

Kaloshin G.A.,Zuev Institute of Atmospheric Optics
Applied Optics | Year: 2011

The microphysical model Marine Aerosol Extinction Profiles (MaexPro) for surface layer marine and coastal atmospheric aerosols, which is based on long-term observations of size distributions for 0:01-100 μm particles, is presented. The fundamental feature of the model is a parameterization of amplitudes and widths for aerosol modes of the aerosol size distribution function (ASDF) as functions of fetch and wind speed. The shape of the ASDFand its dependence on meteorological parameters, altitudes above the sea level (H), fetch (X), wind speed (U), and relative humidity is investigated. The model is primarily to characterize aerosols for the near-surface layer (within 25 m). The model is also applicable to higher altitudes within the atmospheric boundary layer, where the change in the vertical profile of aerosol is not very large. In this case, it is only valid for "clean" marine environments, in the absence of air pollution or any other major sources of continental aerosols, such desert dust or smoke from biomass burning. The spectral profiles of the aerosol extinction coefficients calculated by MaexPro are in good agreement with observational data and the numerical results obtained by the well-known Navy Aerosol Model and Advanced Navy Aerosol Model codes. Moreover, MaexPro was found to be an accurate and reliable instrument for investigation of the optical properties of atmospheric aerosols. © 2011 Optical Society of America.

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