Spectra and energy levels of three- and four-times ionized hafnium (Hf iv and Hf v)
- 1 December 1974
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 64 (12) , 1656-1664
- https://doi.org/10.1364/josa.64.001656
Abstract
The spectra of hafnium produced by a sliding-spark discharge operating at peak currents of 6 to 1200 Å were photographed in the spectral range of 400 to 2100 Å. Sixty-three lines of Hf iv were measured in the limited range of ~ 500–900 Å, of which 43 were classified. New levels in the 4f14nl doublet term system of Hf iv were found for nl = 6f, 7p, and 8s. In addition, the resonance transition array 4f145d–4f135d2 was interpreted. In Hf v 216 lines were observed. With these data, all levels of the configurations 4f13nl for nl = 6s, 7s, 6p, 5d, and 6d were found except for two levels of 4f136d. Theoretical interpretations are given of all of the above configurations. Values for the ionization energies of both species were derived.Keywords
This publication has 6 references indexed in Scilit:
- On the spectrum of Hf IVPhysica, 1974
- Fourth Spectrum of LutetiumJournal of the Optical Society of America, 1972
- One-Electron Spectrum of Doubly Ionized Lutetium (Lu iii) and Nuclear Magnetic Dipole Moment of ^175LuJournal of the Optical Society of America, 1971
- Two- and three-electron electrostatic effective interactions in 1N1' configurationsJournal of Physics B: Atomic and Molecular Physics, 1970
- Analysis of the Third Spectrum of Praseodymium*Journal of the Optical Society of America, 1963
- Spectral structure of doubly and trebly ionized hafniumPhysica, 1961