Welcome to TOPbase [1, 2], the
Opacity Project [3] on-line atomic database. TOPbase
contains the most complete dataset of LS-coupling term energies,
f-values and photoionization cross sections for astrophysical abundant ions
(Z=1-26) that is currently available. They have been computed
in the close-coupling approximation [4]
by means of the R-matrix method [5] with innovative asymptotic techniques [6].
In most cases the accuracy of the data is comparable with that
obtained by other state-of-the-art atomic physics numerical
approaches. TOPbase also contains
large datasets of f-values for ions of Fe with configurations
3sx3py3dz, referred to as the
PLUS-data [7], computed with the atomic structure code
SUPERSTRUCTURE [8].
You can either ftp the original raw files or make use
of the interactive searching facilities to display custom views of: