Abstract
The analysis of the higher spark spectra of the elements has received a fresh impetus from the recent advances in the technique of accurate wave¬length determination in the extreme ultra-violet region bordering on soft X-rays. Some of the complicated spectra of the heavy elements and of the rare earths have also been successfully attacked in, recent times. The Os-Ir¬Pt group is an. example ; the arc spectra of these elements have now been analysed,' but the spark spectra which are even richer in lines have not yet been investigated. Since Jr I, Pt II, Au III and Hg IV form an isoelectronic sequence, the spectrum of Hg IV has been taken up in this work with the hope of analysing Pt II and Au III subsequently. A complete analysis of these rich spectra may throw light on any modifications that may be required in Hund's theory.
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Schedule a callMore From: Proceedings of the Indian Academy of Sciences - Section A
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