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Lifetimes, Branching Fractions, and Oscillator Strengths of Doubly Ionized Tungsten



M Schultz-Johanning, R Kling, R Schnabel, M Kock, ZZ Li, H Lundberg, S Johansson


A first set of W III oscillator strengths has been obtained from combined lifetime and brancing fraction measurements. The branching fractions in the wavelength region of 154-334 nm were measured on a Penning discharge with Fourier transform spectroscopy. Three levels have been calibrated on absolute scales with lifetimes measured with the time -resolved laser-induced fluorescence technique. The f-values derived have uncertainties of about 10% at best. A comparison with Cowan-code calculations is given since no other data are available in the literature.
Physica Scripta
No. 5


doubly-ionized tungsten, oscillator strengths, tomic lifetimes


Schultz-Johanning, M. , Kling, R. , Schnabel, R. , Kock, M. , Li, Z. , Lundberg, H. and Johansson, S. (2001), Lifetimes, Branching Fractions, and Oscillator Strengths of Doubly Ionized Tungsten, Physica Scripta (Accessed May 28, 2023)
Created April 30, 2001, Updated October 12, 2021