Bound Free (Overview)
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Source
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Photonization data in SIROCCO is gennerally obtained from two sources


- The `Opacity project <http://cdsweb.u-strasbg.fr/topbase/topbase.html>`_. See also `Cunto et at 1993, A&A, 275, L5 <http://articles.adsabs.harvard.edu/full/1993A%26A...275L...5C>`_

or

- `Verner & Yakovlev 1995 <http://adsabs.harvard.edu/abs/1995A\%26AS..109..125V>`_ : Inner and Outer Shell Cross-sections
- `Verner et al. 1996 <http://adsabs.harvard.edu/abs/1996ApJ...465..487V>`_ : Improved Outer Shell Cross-sections-


Details of how each type of photonionzation x-section is treated can be found in

- :doc:`bound_free_verner`

- :doc:`bound_free_topbase`