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Excerpt from Second Spectrum of Hafnium (Hf II)
On account of the position of hafnium in the periodic table of chemical elements (immediately following the rare earth group) its spectral structures are of special interest and it is highly desirable to make these analyses as nearly complete as possible. For the Hf 11 analysis, it was soon found that a limitation was imposed by the restricted range for which data were available and in part by the fact that the earlier Observations were made with impure materials. Thus in the work already mentioned,5 although lines were measured in the interval 2165 to 9250 A, more than 600 of these were discarded as evidence of columbium, zirconium, titanium, and other impurities. A more reliable and extended list of hafnium lines was finally Obtained through the kind Cooperation of Prof. G. Von Hevesy, who, in 1932, supplied us with a sample of highly purified oxide, with which the spectra have been reobserved, and extended to 1990 A in the ultra violet and to 10637 A in the infrared. A further extension in the ultraviolet was made by Dr. R. J. Lang Of the University of Alberta, who photographed the spark spectra to 1300 A using the same elec trodes which the authors employed for the study of Zeeman effects. To give a detailed account of the new experiments and to present the final results for the Hf 11 spectrum are the aims of the present paper. Further data and analysis of the Hf 1 spectrum will be published after they have been supplemented by additional observations of Zeeman effects, since the data at present available have proved insufficient for the complete identification of Hf 1 spectral terms.
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Paperback. Zustand: New. Print on Demand. This book presents an extensive analysis of the hafnium spectrum, a complex light pattern emitted by ionized hafnium atoms. The author meticulously classifies and interprets spectral lines, revealing the intricate structure of hafnium atoms and their energy level transitions. The author draws parallels between hafnium and lanthanum spectra, shedding light on the behavior of electrons in these elements. Through this comparison, the book deepens our understanding of the periodic table and the organization of elements based on their atomic properties. The work unveils the fundamental principles governing spectral line selection, establishing a rule that predicts the most prominent line in the hafnium spectrum. This rule has far-reaching implications for understanding and analyzing spectra across various elements. Ultimately, this book provides a comprehensive exploration of the hafnium spectrum, offering valuable insights into atomic structure, electron behavior, and the broader landscape of spectroscopy. Its findings contribute to our knowledge of the fundamental building blocks of matter and the interactions that shape their behavior. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781334257544_0
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