The Ca I absorption spectrum in the extreme ultraviolet: excitation of the 2p subshell
- 10 February 1976
- journal article
- Published by The Royal Society in Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
- Vol. 348 (1652), 143-151
- https://doi.org/10.1098/rspa.1976.0029
Abstract
The Ca I absorption spectrum has been photographed between 10 and 120 angstrom for the first time. At least seven discrete features-all attributable to excitation of the 2p subshell - have been observed. Identifications are made by comparison with Hartree-Fock calculations. The Hartree-Fock results also support an explanation of the irregular quantum defects and remarkable breadths of the lines assigned to the 2p $\rightarrow $ 3d transition.
Keywords
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