Results 1 to 10 of about 251,815 (286)
Stark Broadening of Zn III Spectral Lines
Stark widths for spectral lines within 24 multiplets of Zn III singlets and triplets have been calculated using modified semiempirical method for an electron density of 1017 cm−3 and temperatures from 5000 K up to 100,000 K.
Milan S. Dimitrijević +1 more
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Stark Broadening of O I Spectral Lines
We do not know a priori chemical composition of a star. However, with more high resolution spectra becoming more abundant thanks to the development of space-born observations, atomic data including Stark broadening parameters for various spectral lines ...
Milan S. Dimitrijević +1 more
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There is presented an overview of the latest advances in the analytical theory of Stark broadening of hydrogenic spectral lines in various types of laboratory and astrophysical plasmas.
Eugene Oks
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Correcting the Input Data for Calculating the Asymmetry of Hydrogenic Spectral Lines in Plasmas
We provide corrections to the data in Sholin’s tables from his paper in Optics and Spectroscopy 26 (1969) 27. Since his data was used numerous times by various authors to calculate the asymmetry of hydrogenic spectral lines in plasmas, our corrections ...
Paul Sanders, Eugene Oks
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Identification of phase-independent spectral lines in close binary V455 CYG: I. Telluric lines [PDF]
Spectroscopic observations of close binary star V455 Cygni reveal many lines that originate in interstellar and circumstellar medium and the atmosphere of the Earth; we found over two hundred such spectral features, and in this paper we present the list
Cséki A. +3 more
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MODERNIZATION OF THE KHARKIV MICROWAVE SPECTROMETER: CURRENT STATE [PDF]
Subject and Purpose. Results are presented of the recent considerable upgrade implemented at the Kharkiv microwave spectrometer. The upgrade has been aimed at extending the operating frequency range and increasing the utmost accessible spectral ...
E. A. Alekseev +4 more
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On the Stark broadening of Ru III spectral lines [PDF]
Stark broadening parameters, full widths at half maximum (FWHM) and shifts for spectral lines within six multiplets of doubly charged ruthenium ions have been calculated, for an electron density of 10 17 cm-3 and temperature range from 10 000 K to 160 ...
Dimitrijevć Milan S.
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SQUARE-WAVE FREQUENCY MODULATION IN MICROWAVE SPECTROSCOPY [PDF]
Subject and Purpose. The frequency modulation (FM)combined with lock-in detection, the technique which is used in microwave spectroscopy for enhancing the sensitivity of measurements, as well as the effects due to standing wavesinthe measuring absorption
E. A. Alekseev +2 more
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THE RT-32 RADIO TELESCOPE CONSTRUCTION BASED ON THE MARK-4B ANTENNA SYSTEM. 3. LOCAL OSCILLATORS AND SELF-NOISE OF THE RECEIVING SYSTEM [PDF]
Purpose: High resolution investigation of spectral lines of space sources requires low intrinsic noise of the radio telescope receiving system. It is provided with both input cryogenic amplifiers and low phase noise of local oscillators. To make spectral
O. M. Ulyanov +25 more
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Update of Atomic Data for the First Three Spectra of Actinium
The present article describes a complete reanalysis of all published data on observed spectral lines and energy levels of the first three spectra of actinium (Ac I–III). In Ac I, three previously determined energy levels have been rejected, 12 new energy
Alexander Kramida
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