Results 11 to 20 of about 1,274,676 (322)

“Structure of Spectral Lines” [PDF]

Nature, 1947
In Nature of August 23, p. 244, Dr. D. A. Jackson reviews my recent book on “High-Resolution Spectroscopy” (Methuen, 1947). After considerable hesitation and with much reluctance, I feel compelled to comment on several misrepresentations made by Dr. Jackson.
S, TOLANSKY, D A, JACKSON
openaire   +3 more sources

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

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

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 search for 21 cm HI absorption in AT20G compact radio galaxies [PDF]

, 2012
We present results from a search for 21 cm associated HI absorption in a sample of 29 radio sources selected from the Australia Telescope 20 GHz survey. Observations were conducted using the Australia Telescope Compact Array Broadband Backend, with which
Allison, J. R., Curran, S. J., Emonts, B. H. C., Gareb, K., Mahony, E. K., Reeves, S., Sadler, E. M., Tanna, A., Whiting, M. T., Zwaan, M. A.   +9 more
core   +2 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

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

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

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

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