Results 11 to 20 of about 1,349,657 (273)

Superfast Line Spectral Estimation [PDF]

, 2018
A number of recent works have proposed to solve the line spectral estimation problem by applying off-the-grid extensions of sparse estimation techniques.
Fleury, Bernard Henri, Hansen, Thomas Lundgaard, Rao, Bhaskar D.   +2 more
core   +3 more sources

A new model for the structure of the DACs and SACs regions in the Oe and Be stellar atmospheres [PDF]

, 2007
In this paper we present a new mathematical model for the density regions where a specific spectral line and its SACs/DACs are created in the Oe and Be stellar atmospheres.
Antoniou, A., Danezis, E., Dimitrijević, M. S., Lyratzi, E., Nikolaidis, D., Popović, L. Č., Theodosiou, E.   +6 more
core   +1 more source

Precise measurements of the wavelength in KrCl laser spectral region (222 nm)

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2016
The technique for precise measurements of wavelengths in the range around 222 nm (45030 cm–1) has been presented. The reciprocal linear dispersion of the spectrometer was 0.529 Å/mm.
N.G. Zubrilin
doaj   +1 more source

A representative sample of Be stars III: H band spectroscopy [PDF]

, 1999
We present H band (1.53 - 1.69 micron) spectra of 57 isolated Be stars of spectral types O9-B9 and luminosity classes III,IV & V. The HI Brackett (n-4) series is seen in emission from Br 11-18, and FeII emission is also apparent for a subset of those ...
Clark, Dougherty, Gehrz, Hamann, Hanson, Hanson, Hanuschik, Hony, Howells, I. A. Steele, J. S. Clark, Koornneef, Marlborough, Millar, Porter, Quirrenbach, Scargle, Stee, Steele, Storey   +19 more
core   +5 more sources

Spectral Line Shapes of He I Line 3889 Å

Atoms, 2014
Spectral line shapes of neutral helium 3889 Å(23S–33P) transition line are calculated by using several theoretical methods. The electronic contribution to the line broadening is calculated from quantum statistical many-particle theory by using ...
Banaz Omar, Manuel Á. González, Marco A. Gigosos, Tlekkabul S. Ramazanov, Madina C. Jelbuldina, Karlygash N. Dzhumagulova, Mark C. Zammit, Dmitry V. Fursa, Igor Bray   +8 more
doaj   +1 more source

the SDSS-III APOGEE Spectral Line List for H-Band Spectroscopy [PDF]

, 2015
We present the H-band spectral line lists adopted by the Apache Point Observatory Galactic Evolution Experiment (APOGEE). The APOGEE line lists comprise astrophysical, theoretical, and laboratory sources from the literature, as well as newly evaluated ...
Bizyaev, D., Chojnowski, D., Cunha, K., Garcia-Hernandez, D. A., Holtzman, J., Johnson, J. A., Koesterke, L., Lawler, James E., Majewski, S., Meszaros, S., Perez, A. E. G., Prieto, Carlos Allende, Shetrone, Matthew, Smith, V. V., Sobeck, J., Souto, D., Zamora, O., Zasowski, G.   +17 more
core   +2 more sources

Spectral Line Shapes in Plasmas II

Atoms, 2019
The Spectral Line Shapes in Plasmas (SLSP) code comparison workshop series [...]
Evgeny Stambulchik, Annette Calisti, Hyun-Kyung Chung, Manuel Á. González   +3 more
doaj   +1 more source

Rapid Scanning of the Spectral Line Profile With [PDF]

Kirkuk Journal of Science, 2011
The problem of rapid scanning of spectral line profiles with help of Fabry-Perot Interferometer, and to investigate the physical parameters of these profiles is discussed.
Saalaar Z. Mohamed
doaj   +1 more source

Subnanosecond spectral diffusion measurement using photon correlation [PDF]

, 2010
Spectral diffusion is a result of random spectral jumps of a narrow line as a result of a fluctuating environment. It is an important issue in spectroscopy, because the observed spectral broadening prevents access to the intrinsic line properties ...
A Berthelot, A Szabo, A Tribu, A Zumbusch, A. Tribu, C. Bougerol, E Moreau, G Sallen, G. Sallen, HD Robinson, J.-Ph. Poizat, JR Klauder, K. Kheng, L Besombes, L Coolen, L Coolen, L. Besombes, M. Richard, P Palinginis, R Flach, R. André, S. Tatarenko, SA Empedocles, SA Empedocles, T Aichele, T. Aichele, V Türck, WP Ambrose, X Brokmann   +28 more
core   +4 more sources

Effects of nonlocality in time of interactions of an atom with its surroundings on the broadening of spectral lines of atoms [PDF]

, 2002
We investigate effects of nonlocality in time of the interaction of an atom with its surroundings on the spectral line broadening. We show that these effects can be very significant: In some cases nonlocality in time of this interaction can give rise to ...
Adamian, Adamian, Aigul A. Mutygullina, Antoine, Beane, Feynman, Feynman, Fonda, Gainutdinov, Gainutdinov, Gainutdinov, Gainutdinov, Gainutdinov, Horwitz, Lindblad, Lindblad, Reed, Renat Kh. Gainutdinov, Sandulescu, Sinha, Stefanescu, Sudbery, Weinberg, Weinberg, Weinberg, Werner Scheid, Williams, Witten   +27 more
core   +2 more sources