Wednesday, July 4, 2012

1207.0576 (A. R. Foster et al.)

Updated Atomic Data and Calculations for X-ray Spectroscopy    [PDF]

A. R. Foster, L. Ji, R. K. Smith, N. S. Brickhouse
We describe the latest release of AtomDB, version 2.0.2, a database of atomic data and a plasma modeling code with a focus on X-ray astronomy. This release includes several major updates to the fundamental atomic structure and process data held within AtomDB, incorporating new ionization balance data, state-selective recombination data, and updated collisional excitation data for many ions, including the iron L-shell ions from Fe$^{+16}$ to Fe$^{+23}$ and all of the hydrogen- and helium-like sequences. We also describe some of the effects that these changes have on calculated emission and diagnostic line ratios, such as changes in the temperature implied by the He-like G-ratios of up to a factor of 2.
View original: http://arxiv.org/abs/1207.0576

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