2013A&A...549A..42D


Query : 2013A&A...549A..42D

2013A&A...549A..42D - Astronomy and Astrophysics, volume 549A, 42-42 (2013/1-1)

Atomic data for astrophysics: Fe XI soft X-ray lines.

DEL ZANNA G. and STOREY P.J.

Abstract (from CDS):

We present new large-scale R-matrix (up to n=4) and distorted wave (up to n=6) scattering calculations for electron collisional excitation of FeXI. These data are needed for the analysis of soft X-ray spectra of astrophysical plasmas, where strong n=4->n=3 transitions are present. As found in previous work on FeX, FeXII, and FeXIII, resonances from within the n=4 levels and cascading from higher levels significantly increase the intensities of these lines. We provide a list of the strongest lines, many of which are unidentified. The present larger model produces intensities for decays from n=3 levels mostly consistent with our previous work, however significant enhancements for some lower levels are found, in particular for the 3s2 3p3 3d 5D which can be used to measure electron temperatures in the solar corona with the Hinode/EIS spectrometer.

Abstract Copyright:

Journal keyword(s): atomic data - Sun: corona - line: identification - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/A+A/549/A42): table1.dat table2.dat table3.dat table4.dat table5.dat>

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