Open AccessIX. The vacuum spark spectra of some the heavier elements, and series classification in the spectra of ionised atoms homologous with copper, silver, and gold
Publication year - 1926
Publication title -
philosophical transactions of the royal society of london. series a, containing papers of a mathematical or physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9258
pISSN - 0264-3952
DOI - 10.1098/rsta.1926.0009
Subject(s) - spectral line , lithium (medication) , extension (predicate logic) , observatory , copper , homologous series , series (stratigraphy) , field (mathematics) , physics , theoretical physics , atomic physics , chemistry , materials science , astrophysics , crystallography , computer science , mathematics , astronomy , metallurgy , geology , medicine , paleontology , programming language , endocrinology , pure mathematics
§ 1. The vacuum spark spectra of the lighter elements have furnished, in the hands of Millikan and Bowen, data for a remarkable extension of the field of optical series spectra. Their recognition and discussion of the sequence of doublet spectra of ionised atoms similar to lithium and sodium has emphasized certain difficulties in the interpretation of doublet separations which we shall mention briefly in § 4. The writer has, by means of spectra photographed by him in Prof. Millikan’s laboratory at the California Institute of Technology and in the laboratory of the Mount Wilson Observatory, essayed the extension of this work into the field of elements lying in the middle part of the periodic table.