Rydberg series in the vacuum ultraviolet absorption spectrum of silicon monoxide
- 28 July 1979
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 12 (14) , 2309-2318
- https://doi.org/10.1088/0022-3700/12/14/014
Abstract
New observations of the absorption spectrum of SiO in the 700-1500 AA wavelength range are reported. The experiments were performed with a 1 m normal incidence spectrograph at the synchrotron radiation facility of the 500 MeV accelerator in Bonn. The known band systems have been extended, and a Rydberg series converging on the x2 Sigma + state of SiO+ has been found from which an improved value of the ionisation potential is derived (11.584+or-011 eV). A further Rydberg series above the first ionisation threshold is found to converge on the B2 Sigma + state of SiO+ at 14.805 eV.Keywords
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