Published February 1, 1985
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Journal Article
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Lifetimes, branching ratios, and transition probabilities in Co ii
- Creators
- Salih, S.
- Lawler, J. E.
- Whaling, W.
Abstract
The radiative lifetime of 14 levels in the z^5F, z^5D, and z^5G terms of Co ii have been measured with use of time-resolved laser fluorescence spectroscopy with a Co+-ion beam. Our lifetime values are shorter by 15–50 % than earlier results from beam-foil time-of-flight measurements. The lifetimes were converted to 41 individual transition probabilities with use of branching ratios measured on spectra recorded with the 1-m Fourier-transform spectrometer at the Kitt Peak National Observatory. On average our transition probabilities agree with those of Kurucz and Peytremann; for ΔS=1 transitions their calculated values are lower than our experimental results by a factor of ∼(1/4).
Additional Information
©1985 The American Physical Society Received 24 August 1984 This research was supported in part by National Science Foundation Grants Nos. AST-83-00948 and AST-83-17713. We are indebted to J. W. Brault and the National Solar Observatory-National Optical Astronomical Observatory (NSO-NOAO) staff for assistance with the KPFTS spectra. The National Solar Observatory is operated by Association of Universities for Research in Astronomy (AURA), Inc., under contract with the National Science Foundation.Files
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Additional details
- Eprint ID
- 6785
- Resolver ID
- CaltechAUTHORS:SALpra85
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