Electron impact excitation of Fe-peak ions for astrophysical applications

Details Electron impact excitation of Fe-peak ions for astrophysical applications Electron impact excitation of Fe-peak ions for astrophysical applications

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jphcs.194f2013c&link_type=abstract

Journal of Physics: Conference Series, Volume 194, Issue 6, pp. 062013 (2009).

Physics

Scientific paper

Accurate determination of electron excitation rates for the Fe-peak elements is complicated by the presence of an open 3d-shell in the description of the target ion, which can lead to hundreds of target state energy levels. Furthermore, the low energy scattering region is dominated by series of Rydberg resonances, which require a very fine energy mesh for their delineation. These problems have prompted the development of a suite of parallel R-matrix codes. In this work we report recent applications of these codes to the study of electron impact excitation from astrophysically important ions of Fe and Ni.

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