Spectra of W VIII and W IX in the EUV Region

Atoms

Alexander Ryabtsev¹  Edward Kononov¹  Rimma Kildiyarova¹  Wan-Ü Lydia Tchang-Brillet²  Jean-Francois Wyart²  Norbert Champion²  Christophe Blaess² 

[1] Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow 142190, Russia; E-Mails:;LERMA, Observatoire de Paris-Meudon, PSL Research University, UMR8112 du CNRS, Sorbonne Universités, UPMC Univ. Paris 06, 92195 Meudon, France; E-Mails:

关键词: atomic data for tungsten;    vacuum ultraviolet;    ion spectra;    wavelengths;    energy levels;    transition probabilities;    parametric calculations;   

DOI  :  10.3390/atoms3030273

来源: mdpi

【 摘 要 】

The results obtained on the W VIII spectrum as well as on the isoelectronic spectra Lu V, Hf VI, Ta VII, and Re IX in the VUV wavelength region are summarized with emphasis on the main trends along the isoelectronic sequence. A total of 187 lines of W VIII in the region of 160–271 Å were accurately measured and identified, 98 levels were found, and transition probabilities calculated. The isoelectronic regularities support the data on W VIII. A list of spectral lines in the region of 170–199 Å, considered as belonging to W IX, is presented.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.