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Artikel 112065-01


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112065-01  Siegbahn, Manne und Einar Friman.
On the High-Frequency Spectra (L-Series) of the Elements Tantalum-Uranium. SS. 39-49. Mit 3 Abbildungen. - Und: Dieselben. On an X-Ray Vacuum Spectrograph. SS. 494-496. Mit 1 Abbildung. - Und: Einar Friman. On the High-Frequency Spectra (L-Series) of the Elements Lutetium-Zinc. SS. 497-499. In: Philosophical Magazine and Journal of Science. 6th Series. Vol. 32. (22 x 14 cm). VII, 610 S. Mit zahlreichen Abbildungen und Tafeln. Halblederband der Zeit.
London, Taylor & Francis, 1916.
Drei erste Ausgaben zur Röntgenspektroskopie. - "Siegbahn began by constructing a metal X-ray tube that he and Ivar Malmer used in a study of the K series of heavy elements (zirconium to neodymium). They showed in 1915 that each of the two K lines identified by Mosely (K(alpha) and K(betha)) actually consists of a doublet... To extend Moseley's study of the L series, for which four lines had been identified, Siegbahn constructed improved vacuum spectrometers and X-ray tubes to reduce absorption by air and, especially for lighter elements, by the wall of the tube. He worked with Einar Friman (1916) in a study of the L series for zinc to uranium. They extended the longest recorded wavelength from Moseley's 6 Angstrom units to 12.8 Angström units, and increased the precision by two orders of magnitude. The surprisingly complicated line structure was systematically analyzed in Friman's 1916 doctoral dissertation" (DSB). - Siegbahn erhielt 1924 für seine Forschungen auf dem Gebiet der Röntgenspektroskopie den Nobelpreis für Physik. - Exlibris. Oberes Kapital mit kleiner Fehlstelle, sonst sauber und gut erhalten. - DSB 18, 821

250 €