Preliminary Analysis of the Spectrum of Triply Ionized Gadolinium (Gd iv)*
- 1 March 1970
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 60 (3), 347-351
- https://doi.org/10.1364/josa.60.000347
Abstract
The emission spectrum of doubly and triply ionized gadolinium from 1200 to 6000 Å is reported. A pulsed hollow-cathode light source was used with a 5-m Czerny–Turner vacuum spectrograph to obtain wavelengths and photoelectric intensities for 12 000 lines of doubly ionized gadolinium and 8000 lines of triply ionized gadolinium. For the fourth spectrum, a preliminary analysis indicates that the 4f66s–4f66p transitions occur at 45 000 cm−1 and the 4f7–4f65d transitions at 75 000 cm−1. The stronger lines from these regions determine 32 low-lying levels of these configurations.Keywords
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