Modeling of iron K lines: radiative and Auger decay data for Fe II-Fe IX
Abstract
A detailed analysis of the radiative and Auger de-excitation channels of K-shell vacancy states in Fe II-Fe IX has been carried out. Level energies, wavelengths, A-values, Auger rates and fluorescence yields have been calculated for the lowest fine-structure levels populated by photoionization of the ground state of the parent ion. Different branching ratios, namely K-alpha_2/K-alpha_1, K-beta/K-alpha, KLM/KLL, KMM/KLL, and the total K-shell fluorescence yields, omega_K, obtained in the present work have been compared with other theoretical data and solid-state measurements, finding good general agreement with the latter. The K-alpha_2/K-alpha_1 ratio is found to be sensitive to the excitation mechanism. From these comparisons it has been possible to estimate an accuracy of ~10% for the present transition probabilities.
Keywords
Cite
@article{arxiv.astro-ph/0306321,
title = {Modeling of iron K lines: radiative and Auger decay data for Fe II-Fe IX},
author = {P. Palmeri and C. Mendoza and T. R. Kallman and M. A. Bautista and M. Melendez},
journal= {arXiv preprint arXiv:astro-ph/0306321},
year = {2009}
}
Comments
6 pages, 5 figures. Submitted to A&A. Electronic Tables 3-4 available at http://lheawww.gsfc.nasa.gov/users/palmeri/patrick.html