학술논문
4f 13 5s 2 5p 6 -4f 13 5s 2 5p 5 6s transitions in the W VIII spectrum and spectra of isoelectronic hafnium, tantalum, and rhenium ions
Document Type
Original Paper
Author
Source
Optics and Spectroscopy. August 2012 113(2):109-114
Subject
Language
English
ISSN
0030-400X
1562-6911
1562-6911
Abstract
Spectra of hafnium, tantalum, tungsten, and rhenium in the range of 145–350Å, excited in a low-inductive vacuum spark, have been recorded on a grazing-incidence vacuum spectrograph using a grating with 3600 lines/mm and a radius of 3 m. The wavelengths and intensities of more than 3800 lines in the tungsten spectrum have been measured. Comparison with the Hartree-Fock calculations showed that most spectral lines should be due to transitions in the W VIII spectrum. Short-wavelength lines due to the 4f13 5s2 5p6 -4f13 5s2 5p5 6s transitions have been identified in the W VIII spectrum and the Re IX, Ta VII, and Hf VI isoelectronic spectra.