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Kroll, Diana Lambdin

doi:10.5951/at.33.4.0027

Cited by 2 publications

(3 citation statements)

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“…In Table 2 we present our branching fractions which are re-separated from the absolute data given in Kroll, 1985, Kroll and Kock, 1987and Heise and Kock, 1990. Possible transitions which were not found in the spectra have been estimated with the data of Kurucz and Bell, 1995 to contribute less than 2% and have been accounted for in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…In the present paper we use branching fractions from previous publications, the PhD thesis of Kroll, 1985, and the journal papers by Kroll andKock, 1987 andHeise andKock, 1990. In all cases branching fractions were determined by means of emission spectroscopy.…”

Section: Branching Fraction Measurementmentioning

confidence: 99%

“…The result of this combination is a set of absolute transition probabilities (Huber andSandeman, 1986 andKock, 1996). In Kroll, 1985, Kroll and Kock, 1987and Heise and Kock, 1990 we used lifetimes with high uncertainties of 10 % to calibrate our experimental branching fractions in the Fe II spectrum. These lifetimes were also affected by a systematic error, since they proved to be systematically too large.…”

Section: Introductionmentioning

confidence: 99%

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Fe II lifetimes and transition probabilities

Schnabel

Schultz-Johanning

Kock

2004

A&A

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Abstract. Fe II radiative lifetimes were measured applying the time-resolved nonlinear laser-induced fluoresence technique. We investigated 21 levels of up to 47 000 cm −1 . The uncertainties are typically 2−3%. The lifetimes provide an improved absolute scale to our branching fractions which were measured with a Fourier transform spectrometer and a high-resolution grating spectrometer and which have been published earlier. We report absolute transition probabilities of 140 Fe II lines in the wavelength range 220-780 nm. The overall uncertainties are estimated to be 6% for the strong and up to 26% for the weak transitions. The results are compared with recent experimental data from the literature. Our large set of accurate data can be used for a reliability check of theoretical data calculated for iron abundances in astrophysical plasmas.

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Section: Resultsmentioning

confidence: 99%

Section: Branching Fraction Measurementmentioning

confidence: 99%