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2009ApJ...695..818G - Astrophys. J., 695, 818-824 (2009/April-3)

Measurement and modeling of Na-like Fe XVI inner-shell satellites between 14.5 Å and 18 Å.

GRAF A., BEIERSDORFER P., BROWN G.V. and GU M.F.

Abstract (from CDS):

We have used the University of California Lawrence Livermore National Laboratory's EBIT-I electron beam ion trap to perform measurements of the wavelengths and relative intensities of the X-ray lines from inner-shell satellite transitions in sodium-like Fe XVI. The measurements were carried out with high-resolution crystal and grating spectrometers and covered the 14.5-18 Å wavelength band. In contrast to some predicted line strengths and positions found in the literature, our results show that the strongest relatively unblended inner-shell satellites of Fe XVI are located near 15.2 Å. This is near the location of the 3d-> 2p intercombination line in Fe XVII. Calculations using the Flexible Atomic Code (FAC) are presented. The average deviation between the EBIT-I measurements and the FAC calculations for the wavelength positions and line ratios are 22 mÅ and a factor of 2.3, respectively, where the average is taken over the ten features included in this work.

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Journal keyword(s): line: identification - X-rays: general

Simbad objects: 2

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