Search results for "ETC"
showing 10 items of 778 documents
<title>Photoinduced AsSeS thin film phase plates as adaptive optics mirrors for eye aberration correction</title>
2008
Amorphous chalcogenide thin films are excellent materials for holographic recordings. AsSeS thin film coating is a useful optical material for it's thickness to be easily corrected with the use of exposure to light and consecutive chemical etching. Following properties allow to treat the surface of AsSeS chalcogenide films and to use them in adaptive optics systems for correction of the optical wavefront. Hereby, we characterize AsSeS film properties to be used for correction of optical aberrations of the human eye. The thickness of the film is characterized with the method of spectrodensitometry and the surface profile depth with a Hartman- Shack waveform analyzator.
Resolution of the ATLAS muon spectrometer monitored drift tubes in LHC Run 2
2019
The momentum measurement capability of the ATLAS muon spectrometer relies fundamentally on the intrinsic single-hit spatial resolution of the monitored drift tube precision tracking chambers. Optimal resolution is achieved with a dedicated calibration program that addresses the specific operating conditions of the 354 000 high-pressure drift tubes in the spectrometer. The calibrations consist of a set of timing offsets and drift time to drift distance transfer relations, and result in chamber resolution functions. This paper describes novel algorithms to obtain precision calibrations from data collected by ATLAS in LHC Run 2 and from a gas monitoring chamber, deployed in a dedicated gas fac…
Mihail Manoilescu, A Researcher Who Tipped the Development and International Trade Theory: Sketch Portrait
2020
Who was Mihail Manoilescu? What are the main dimensions of his scientific work? How did the researcher tilt the industrial development theory, that specializes in international trade, according to David Ricardo’s theory of comparative costs and the H.O.S. theory? What was his place in the world economy? What current significations may one find in Manoilescu’s theses? Here are questions that these lines are designed to answer sketching a portrait of the Romanian economist.
Absorption, fluorescence and EIT processes in the extremely thin cell filled with Rb and buffer gas neon
2008
International audience; Comparison of the absorption and fluorescence in the nanocell (or so called extremely thin cell) filled with pure Rb with another one filled with Rb and Neon gas is provided. The effect of the collapse and revival of Dicke-type narrowing is still observable for thickness L=lambda/2, and lambda, where lambda , is a resonant laser wavelength either 780 nm, or 795 nm (for Rb, D2 or D1 line). For L= so called velocity selective optical pumping (VSOP) resonance located at the atomic transition is still observable, while the linewidth is increased by 4 times in comparison with that obtained in the pure Rb nanocell. Comparison with the theory is presented. Electromagnetic…
Sub-Doppler Satellites of Dark-Line Atomic Resonances in the Case of Ordinary Vapour Cell and Extremely Thin Cell
2006
Study of atomic Vapour Layers of Nanometric Thickness and Atom-Surface Interaction
2007
The rebirth of streetcars in the United-States and France
2014
International audience
Art and Science in Word and Image: Exploration and Discovery
2019
International audience; Art and Science in Word and Image investigates the theme of ‘riddles of form’, exploring how discovery and innovation have functioned inter-dependently between art, literature and the sciences. Using the impact of evolutionary biologist D’Arcy Thompson’s On Growth and Form on Modernist practices as springboard into the theme, contributors consider engagements with mysteries of natural form in painting, photography, fiction, etc., as well as theories about cosmic forces, and other fields of knowledge and enquiry. Hence the collection also deals with topics including cultural inscriptions of gardens and landscapes, deconstructions of received history through word and i…
Art, cuisine et dépendances mutuelles
2014
Professeur des Universités (Dijon), sémiologue de l'alimentation L'homme du paléolithique donne déjà raison à Lévi-Strauss. S'il pense sa nourriture, il ne pense pas moins à peindre ce qu'il chasse et mange. Pinceau en main, l'homme n'aura de cesse de reproduire les aliments, pour voir dans fruits et bestiaires, non simples pelures et pelages, mais vie, âme, mystère. L'art et la nourriture ont toujours marié leurs couleurs et leurs saveurs expressives. La nature morte fera recette pendant des siècles, avant que les courants artistiques ne s'emparent de la modernité alimentaire. Une exposition devenue permanente avec les médias qui cultivent notre disposition esthétique à l'égard du fait cul…
Conceptual design and simulation of a water Cherenkov muon veto for the XENON1T experiment
2014
XENON is a direct detection dark matter project, consisting of a time projection chamber (TPC) that uses xenon in double phase as a sensitive detection medium. XENON100, located at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy, is one of the most sensitive experiments of its field. During the operation of XENON100, the design and construction of the next generation detector (of ton-scale mass) of the XENON project, XENON1T, is taking place. XENON1T is being installed at LNGS as well. It has the goal to reduce the background by two orders of magnitude compared to XENON100, aiming at a sensitivity of $2 \cdot 10^{-47} \mathrm{cm}^{\mathrm{2}}$ for a WIMP mass of 50 GeV/c$^{2}$. With…