Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...695..818g&link_type=abstract
The Astrophysical Journal, Volume 695, Issue 2, pp. 818-824 (2009).
Astronomy and Astrophysics
Astronomy
4
Line: Identification, X-Rays: General
Scientific paper
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.
Beiersdorfer Peter
Brown Gregory V.
Graf Anton
Gu Min Feng
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