Intensity Measurements in the Spectrum of Nickel and Cobalt
- 15 August 1930
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 36 (4) , 679-693
- https://doi.org/10.1103/physrev.36.679
Abstract
Quantitative intensity measurements have been carried out in the Ni I and Ni II, and the Co I spectrum. The spectrographic outfit for the intensity measurements consisted of a stigmatic concave grating mounting used with step weakeners, and a Hilger E 1 used with the method of slit width variation. The summation rules have been tested both for multiplets and supermultiplets, also the intensity ratio for singlets and triplets, doublets and quartets. Serious divergencies have been found everywhere. In the Ni II spectrum an extension of the summation rules to supermultiplets gives better results in several cases. Intensity tables are given of the lines measured.Keywords
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