The Experts below are selected from a list of 108 Experts worldwide ranked by ideXlab platform
Yu. M. Smirnov - One of the best experts on this subject based on the ideXlab platform.
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excitation of Strontium Atom in electron Atom collisions
Journal of Applied Spectroscopy, 2010Co-Authors: Yu. M. SmirnovAbstract:The excitation of 3D levels of Strontium Atom by slow monoenergetic electrons has been studied experimentally. Thirty six excitation cross-sections were measured at 30-eV electron energy. Optical excitation functions for most of the transitions were recorded in the 0–200-eV electron-energy range. The excitation cross-section as a function of the principal quantum number has been found to correspond to a power law for all 3D series.
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Excitation of Strontium Atom in electron–Atom collisions
Journal of Applied Spectroscopy, 2010Co-Authors: Yu. M. SmirnovAbstract:The excitation of ^3D levels of Strontium Atom by slow monoenergetic electrons has been studied experimentally. Thirty six excitation cross-sections were measured at 30-eV electron energy. Optical excitation functions for most of the transitions were recorded in the 0–200-eV electron-energy range. The excitation cross-section as a function of the principal quantum number has been found to correspond to a power law for all ^3D series.
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Inelastic collisions of slow electrons with SrBr_2 molecules
Russian Journal of Physical Chemistry B, 2008Co-Authors: Yu. M. SmirnovAbstract:Inelastic collisions of slow electrons with SrBr_2 molecules were studied experimentally. The dissociative excitation cross sections of two lines of the Strontium Atom and eight lines of the singly charged Strontium ion were measured. Six optical excitation functions were recorded over the electron energy range 0–100 eV. Dissociative excitation cross sections were also measured for two Strontium monobromide sequences related to the B ^2Σ^+- X ^2Σ^+ system.
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Electron impact excitation cross sections of ^1 F ^o levels of the Strontium Atom
Journal of Applied Spectroscopy, 2007Co-Authors: Yu. M. SmirnovAbstract:The behavior of excitation cross sections of the Strontium Atom was studied experimentally in the spectral series 5s4d^1D_2-5snf^1F _3 ^o in the range n = 4–26, and also the optical excitation functions for lines in the same series in the range n = 4–12. It was established that the beginning of the series is perturbed. The effect of the perturbation is manifested both in the irregular course of the dependence of the absolute values of the cross sections on n, and in the difference between the shapes of the optical excitation functions for different terms of the series. The results obtained are compared with available experimental data.
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Electron impact excitation cross sections of 1 F o levels of the Strontium Atom
Journal of Applied Spectroscopy, 2007Co-Authors: Yu. M. SmirnovAbstract:The behavior of excitation cross sections of the Strontium Atom was studied experimentally in the spectral series 5s4d1D2-5snf1F 3 o in the range n = 4–26, and also the optical excitation functions for lines in the same series in the range n = 4–12. It was established that the beginning of the series is perturbed. The effect of the perturbation is manifested both in the irregular course of the dependence of the absolute values of the cross sections on n, and in the difference between the shapes of the optical excitation functions for different terms of the series. The results obtained are compared with available experimental data.
Robin Kaiser - One of the best experts on this subject based on the ideXlab platform.
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Coherent light transport in a cold Strontium cloud
Physical review letters, 2002Co-Authors: Yannick Bidel, B. Klappauf, J.-c. Bernard, Dominique Delande, Guillaume Labeyrie, Christian Miniatura, D. Wilkowski, Robin KaiserAbstract:We study light coherent transport in the weak localization regime using magneto-optically cooled Strontium Atoms. The coherent backscattering cone is measured in the four polarization channels using light resonant with a J(g)=0 to J(e)=1 transition of the Strontium Atom. We find an enhancement factor close to 2 in the helicity preserving channel, in agreement with theoretical predictions. This observation confirms the effect of internal structure as the key mechanism for the contrast reduction observed with a rubidium cold cloud [G.Labeyrie et al., Phys. Rev. Lett. 83, 5266 (1999)]. Experimental results are in good agreement with Monte Carlo simulations taking into account geometry effects.
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Coherent light transport in a cold Strontium cloud
Physical Review Letters, 2002Co-Authors: Y. Bibel, B. Klappauf, J.-c. Bernard, Dominique Delande, Guillaume Labeyrie, Christian Miniatura, D. Wilkowski, Robin KaiserAbstract:We study light coherent transport in the weak localization regime using magneto-optically cooled Strontium Atoms. The coherent backscattering cone is measured in the four polarization channels using light resonant with a J=0 to J=1 transition of the Strontium Atom. We find an enhancement factor close to 2 in the helicity preserving channel, in agreement with theoretical predictions. This observation confirms the effect of internal structure as the key mechanism for the contrast reduction observed with an Rubidium cold cloud (see: Labeyrie et al., PRL 83, 5266 (1999)). Experimental results are in good agreement with Monte-Carlo simulations taking into account geometry effects.
Nikolay K. Vuchkov - One of the best experts on this subject based on the ideXlab platform.
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2d numerical modelling of the gas temperature in a high temperature high power Strontium Atom laser excited by nanosecond pulsed longitudinal discharge in a he srbr2 mixture
Journal of Physics: Conference Series, 2014Co-Authors: Tatiana P Chernogorova, K.a. Temelkov, N K Koleva, Nikolay K. VuchkovAbstract:Assuming axial symmetry and a uniform power input, a 2D model (r, z) is developed numerically for determination of the gas temperature in the case of a nanosecond pulsed longitudinal discharge in He-SrBr2 formed in a newly-designed large-volume high-temperature discharge tube with additional incompact ZrO2 insulation in the discharge-free zone, in order to find the optimal thermal mode for achievement of maximal output laser parameters. The model determines the gas temperature of a nanosecond pulsed longitudinal discharge in helium with small additives of Strontium and bromine.
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Strontium Atom laser excited by nanosecond pulsed longitudinal He-SrBr2 discharge
Journal of Physics D, 2006Co-Authors: K.a. Temelkov, Nikolay K. Vuchkov, Borislav Ivanov, Nikola V. Sabotinov, L. LyutovAbstract:An investigation of a Strontium bromide vapour laser excited by a nanosecond pulsed longitudinal discharge is presented. The optimal discharge conditions for laser oscillation on several Sr Atom and ion lines are found. At multiline output an average laser power of 2.4 W is obtained, more than 80% of which is concentrated at the 6.45 µm Sr Atom line.
D. Wilkowski - One of the best experts on this subject based on the ideXlab platform.
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Coherent light transport in a cold Strontium cloud
Physical review letters, 2002Co-Authors: Yannick Bidel, B. Klappauf, J.-c. Bernard, Dominique Delande, Guillaume Labeyrie, Christian Miniatura, D. Wilkowski, Robin KaiserAbstract:We study light coherent transport in the weak localization regime using magneto-optically cooled Strontium Atoms. The coherent backscattering cone is measured in the four polarization channels using light resonant with a J(g)=0 to J(e)=1 transition of the Strontium Atom. We find an enhancement factor close to 2 in the helicity preserving channel, in agreement with theoretical predictions. This observation confirms the effect of internal structure as the key mechanism for the contrast reduction observed with a rubidium cold cloud [G.Labeyrie et al., Phys. Rev. Lett. 83, 5266 (1999)]. Experimental results are in good agreement with Monte Carlo simulations taking into account geometry effects.
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Coherent light transport in a cold Strontium cloud
Physical Review Letters, 2002Co-Authors: Y. Bibel, B. Klappauf, J.-c. Bernard, Dominique Delande, Guillaume Labeyrie, Christian Miniatura, D. Wilkowski, Robin KaiserAbstract:We study light coherent transport in the weak localization regime using magneto-optically cooled Strontium Atoms. The coherent backscattering cone is measured in the four polarization channels using light resonant with a J=0 to J=1 transition of the Strontium Atom. We find an enhancement factor close to 2 in the helicity preserving channel, in agreement with theoretical predictions. This observation confirms the effect of internal structure as the key mechanism for the contrast reduction observed with an Rubidium cold cloud (see: Labeyrie et al., PRL 83, 5266 (1999)). Experimental results are in good agreement with Monte-Carlo simulations taking into account geometry effects.
Christian Miniatura - One of the best experts on this subject based on the ideXlab platform.
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Coherent light transport in a cold Strontium cloud
Physical review letters, 2002Co-Authors: Yannick Bidel, B. Klappauf, J.-c. Bernard, Dominique Delande, Guillaume Labeyrie, Christian Miniatura, D. Wilkowski, Robin KaiserAbstract:We study light coherent transport in the weak localization regime using magneto-optically cooled Strontium Atoms. The coherent backscattering cone is measured in the four polarization channels using light resonant with a J(g)=0 to J(e)=1 transition of the Strontium Atom. We find an enhancement factor close to 2 in the helicity preserving channel, in agreement with theoretical predictions. This observation confirms the effect of internal structure as the key mechanism for the contrast reduction observed with a rubidium cold cloud [G.Labeyrie et al., Phys. Rev. Lett. 83, 5266 (1999)]. Experimental results are in good agreement with Monte Carlo simulations taking into account geometry effects.
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Coherent light transport in a cold Strontium cloud
Physical Review Letters, 2002Co-Authors: Y. Bibel, B. Klappauf, J.-c. Bernard, Dominique Delande, Guillaume Labeyrie, Christian Miniatura, D. Wilkowski, Robin KaiserAbstract:We study light coherent transport in the weak localization regime using magneto-optically cooled Strontium Atoms. The coherent backscattering cone is measured in the four polarization channels using light resonant with a J=0 to J=1 transition of the Strontium Atom. We find an enhancement factor close to 2 in the helicity preserving channel, in agreement with theoretical predictions. This observation confirms the effect of internal structure as the key mechanism for the contrast reduction observed with an Rubidium cold cloud (see: Labeyrie et al., PRL 83, 5266 (1999)). Experimental results are in good agreement with Monte-Carlo simulations taking into account geometry effects.
