scispace - formally typeset
A

A N Ryabtsev

Researcher at Russian Academy of Sciences

Publications -  123
Citations -  1802

A N Ryabtsev is an academic researcher from Russian Academy of Sciences. The author has contributed to research in topics: Spectral line & Excited state. The author has an hindex of 22, co-authored 120 publications receiving 1727 citations. Previous affiliations of A N Ryabtsev include St. Francis Xavier University & Russian Academy.

Papers
More filters
Journal ArticleDOI

EUV spectra of Gd and Tb ions excited in laser-produced and vacuum spark plasmas

TL;DR: In this paper, the Hartree-Fock calculations using Cowan code were used to identify the most intense lines of the 4d104f2−4d94fm+1 transitions in the Gd XVII and Tb XVIII spectra.
Journal ArticleDOI

Rare-earth elements in the atmosphere of the magnetic chemically peculiar star HD 144897 , New classification of the Nd III spectrum

TL;DR: In this article, the spectral lines of a slowly rotating strongly magnetic Ap star, HD 144897, have been analyzed for the first time from the lines of the first and second rare-earth elements.
Journal ArticleDOI

Analyses of the Sn IX–Sn XII spectra in the EUV region

S S Churilov, +1 more
- 15 May 2006 - 
TL;DR: In this article, the Sn IX-Sn XII spectra excited in a vacuum spark have been analyzed in the 130-160 A wavelength region, based on the energy parameter extrapolation in the isonuclear Sn VI-VIII and Sn XIII-XIV sequence.
Journal ArticleDOI

NLTE ionization equilibrium of Nd II and Nd III in cool A and Ap stars

TL;DR: In this article, the formation of NdII-III lines in the atmospheres of A-type stars with a comprehensive atomic model was investigated, and strong evidence was found for the existence of enhanced Nd abundance layers above log τ 5000 = -3.5.