2014A&A...567A..18D


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST03:07:15

2014A&A...567A..18D - Astronomy and Astrophysics, volume 567A, 18-18 (2014/7-1)

Atomic data for astrophysics: Ni XV.

DEL ZANNA G., STOREY P.J. and MASON H.E.

Abstract (from CDS):

We present the first R-matrix scattering calculation for electron collisional excitation of NiXV. The large-scale target includes configurations up to n=4. The calculations were carried out using the intermediate-coupling frame transformation method. Significant enhancements in the collision strengths, compared to previous distorted-wave (DW) calculations, are found for several cases, in particular the forbidden lines within the ground configuration and the 3s2 3p 4s levels. We provide a complete set of rates and a list of strongest lines that are observable in astrophysical plasmas. Previous identifications are reviewed, and a few new ones suggested. The new data can be used to accurately measure electron densities for high-temperature (3MK) plasmas, and the nickel abundance.

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

VizieR on-line data: <Available at CDS (J/A+A/567/A18): table1.dat table2.dat>

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